bone screws

Summary

Top Publications

  1. ncbi Predictors of functional outcome following transsyndesmotic screw fixation of ankle fractures
    Brad Weening
    Division of Orthopaedic Surgery, McMaster University, 1200 Main Street West, Hamilton, Ontario L8N 3Z5, Canada
    J Orthop Trauma 19:102-8. 2005
  2. ncbi Primary pedicle screw augmentation in osteoporotic lumbar vertebrae: biomechanical analysis of pedicle fixation strength
    Daniel J Burval
    Cleveland Clinic Foundation, Cleveland Clinic Spine Institute, Cleveland, OH 44195, USA
    Spine (Phila Pa 1976) 32:1077-83. 2007
  3. pmc Risk factors in cutout of sliding hip screw in intertrochanteric fractures: an evaluation of 937 patients
    Kuang Kai Hsueh
    Departments of Orthopaedics and Traumatology, Taipei Veterans General Hospital, National Yang Ming University, Taiwan, Republic of China corrected
    Int Orthop 34:1273-6. 2010
  4. ncbi Trochanteric gamma nail and compression hip screw for trochanteric fractures: a randomized, prospective, comparative study in 210 elderly patients with a new design of the gamma nail
    A Lizaur Utrilla
    Department of Orthopaedic Surgery, Hospital General Elda, Elda, Alicante, Spain
    J Orthop Trauma 19:229-33. 2005
  5. ncbi Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage
    Shouichi Miyawaki
    Department of Orthodontics, Okayama University Graduate School of Medicine and Dentistry, Japan
    Am J Orthod Dentofacial Orthop 124:373-8. 2003
  6. ncbi Pertrochanteric fractures: is there an advantage to an intramedullary nail?: a randomized, prospective study of 206 patients comparing the dynamic hip screw and proximal femoral nail
    Marc Saudan
    Clinique d orthopédie et de chirurgie de l appareil moteur, Hopital Cantonal Universitaire, Geneva, Switzerland
    J Orthop Trauma 16:386-93. 2002
  7. ncbi Increase of pullout strength of spinal pedicle screws with conical core: biomechanical tests and finite element analyses
    Ching Chi Hsu
    Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
    J Orthop Res 23:788-94. 2005
  8. ncbi Do miniscrews remain stationary under orthodontic forces?
    Eric J W Liou
    Department of Orthodontics and Craniofacial Dentistry, Chang Gung Memorial Hospital and Graduate School of Craniofacial Medicine, Chang Gung University, 199 Tung Hwa North Road, Taipei 105, Taiwan
    Am J Orthod Dentofacial Orthop 126:42-7. 2004
  9. ncbi Operative versus nonoperative management of acute odontoid Type II fractures: a meta-analysis
    Ali Nourbakhsh
    Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, Louisiana 71130, USA
    J Neurosurg Spine 11:651-8. 2009
  10. ncbi Biomechanical properties of orthodontic miniscrews. An in-vitro study
    Britta Florvaag
    Department of Orthodontics, University of Cologne, Cologne, Germany
    J Orofac Orthop 71:53-67. 2010

Research Grants

Detail Information

Publications321 found, 100 shown here

  1. ncbi Predictors of functional outcome following transsyndesmotic screw fixation of ankle fractures
    Brad Weening
    Division of Orthopaedic Surgery, McMaster University, 1200 Main Street West, Hamilton, Ontario L8N 3Z5, Canada
    J Orthop Trauma 19:102-8. 2005
    ....
  2. ncbi Primary pedicle screw augmentation in osteoporotic lumbar vertebrae: biomechanical analysis of pedicle fixation strength
    Daniel J Burval
    Cleveland Clinic Foundation, Cleveland Clinic Spine Institute, Cleveland, OH 44195, USA
    Spine (Phila Pa 1976) 32:1077-83. 2007
    ..Pedicle screw pullout testing in osteoporotic and control human cadaveric vertebrae, comparing augmented and control vertebrae...
  3. pmc Risk factors in cutout of sliding hip screw in intertrochanteric fractures: an evaluation of 937 patients
    Kuang Kai Hsueh
    Departments of Orthopaedics and Traumatology, Taipei Veterans General Hospital, National Yang Ming University, Taiwan, Republic of China corrected
    Int Orthop 34:1273-6. 2010
    ..In order to decrease the risk of lag-screw cutout, it is important to ensure good fracture reduction and to place the lag screw in either the middle/middle or inferior/middle position with appropriate TAD...
  4. ncbi Trochanteric gamma nail and compression hip screw for trochanteric fractures: a randomized, prospective, comparative study in 210 elderly patients with a new design of the gamma nail
    A Lizaur Utrilla
    Department of Orthopaedic Surgery, Hospital General Elda, Elda, Alicante, Spain
    J Orthop Trauma 19:229-33. 2005
    ..To compare the results between a new intramedullary Gamma nail and a compression hip screw in the treatment of trochanteric fractures...
  5. ncbi Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage
    Shouichi Miyawaki
    Department of Orthodontics, Okayama University Graduate School of Medicine and Dentistry, Japan
    Am J Orthod Dentofacial Orthop 124:373-8. 2003
    ....
  6. ncbi Pertrochanteric fractures: is there an advantage to an intramedullary nail?: a randomized, prospective study of 206 patients comparing the dynamic hip screw and proximal femoral nail
    Marc Saudan
    Clinique d orthopédie et de chirurgie de l appareil moteur, Hopital Cantonal Universitaire, Geneva, Switzerland
    J Orthop Trauma 16:386-93. 2002
    ..To compare the results between a sliding compression hip screw and an intramedullary nail in the treatment of pertrochanteric fractures...
  7. ncbi Increase of pullout strength of spinal pedicle screws with conical core: biomechanical tests and finite element analyses
    Ching Chi Hsu
    Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
    J Orthop Res 23:788-94. 2005
    ....
  8. ncbi Do miniscrews remain stationary under orthodontic forces?
    Eric J W Liou
    Department of Orthodontics and Craniofacial Dentistry, Chang Gung Memorial Hospital and Graduate School of Craniofacial Medicine, Chang Gung University, 199 Tung Hwa North Road, Taipei 105, Taiwan
    Am J Orthod Dentofacial Orthop 126:42-7. 2004
    ....
  9. ncbi Operative versus nonoperative management of acute odontoid Type II fractures: a meta-analysis
    Ali Nourbakhsh
    Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, Louisiana 71130, USA
    J Neurosurg Spine 11:651-8. 2009
    ..The purpose of this study was to evaluate the feasibility of the criteria described in the literature as the indications for surgery for acute Type II odontoid fractures...
  10. ncbi Biomechanical properties of orthodontic miniscrews. An in-vitro study
    Britta Florvaag
    Department of Orthodontics, University of Cologne, Cologne, Germany
    J Orofac Orthop 71:53-67. 2010
    ..Comparing five commercially-available miniscrew types for skeletal anchorage with regard to the biomechanical properties influencing their primary stability...
  11. ncbi A comparison of proximal femoral nail antirotation and dynamic hip screw devices in trochanteric fractures
    J Zou
    Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
    J Int Med Res 37:1057-64. 2009
    ..There were no significant differences in functional outcome between the PFNA and the DHS groups. In conclusion, the PFNA device is useful in the treatment of trochanteric fractures...
  12. ncbi Analysis of biomechanical changes after removal of instrumentation in lumbar arthrodesis by finite element analysis
    Ho Joong Kim
    Yonsei Sarang Hospital, Seoul, Korea
    Med Biol Eng Comput 48:703-9. 2010
    ..This study demonstrated that removal of pedicle screws could decrease stiffness of fusion segments, which would reduce the disk stress of adjacent segments...
  13. ncbi Ball tip technique for thoracic pedicle screw placement in patients with adolescent idiopathic scoliosis
    Kota Watanabe
    Department of Advanced Treatment for Spine and Spinal Cord Disorders, Keio University School of Medicine, Tokyo, Japan
    J Neurosurg Spine 13:246-52. 2010
    ..To further enhance the accuracy and safety of TPS placement, the authors developed the ball tip technique...
  14. ncbi Clinical evaluation of anterior screw fixation for elderly patients with type II odontoid fractures
    Yang Hou
    Department of Orthopaedic Surgery, Changzheng Hospital, Shanghai, China
    J Spinal Disord Tech 24:E75-81. 2011
    ..A retrospective study of elderly patients who underwent anterior screw fixation for type II odontoid fractures between 2000 and 2009 was conducted...
  15. pmc Biomechanical comparison of two different concepts for stand alone anterior lumbar interbody fusion
    Philipp Schleicher
    Center for Spinal Surgery and Neurotraumatology, BG Unfallklinik Frankfurt, Friedberger Landstrasse 430, 60389, Frankfurt, Germany
    Eur Spine J 17:1757-65. 2008
    ..Clinical investigation of the test device seems reasonable based on the good results reported here...
  16. ncbi Biomechanical comparison of different techniques in primary spinal surgery in osteoporotic cadaveric lumbar vertebrae: expansive pedicle screw versus polymethylmethacrylate-augmented pedicle screw
    Da Liu
    Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi an, Shaanxi Province, People s Republic of China
    Arch Orthop Trauma Surg 131:1227-32. 2011
    ..The purpose of this study was to compare the stability of EPS and PMMA-PS in primary spinal surgery...
  17. ncbi Clinical accuracy of three-dimensional fluoroscopy-based computer-assisted cervical pedicle screw placement: a retrospective comparative study of conventional versus computer-assisted cervical pedicle screw placement
    Yoshimoto Ishikawa
    Department of Spine and Orthopaedic Surgery, Konan Kosei Hospital, Konan City, Japan
    J Neurosurg Spine 13:606-11. 2010
    ..The authors performed a retrospective clinical study to evaluate the feasibility and accuracy of cervical pedicle screw (CPS) placement using 3D fluoroscopy-based navigation (3D FN)...
  18. ncbi Restoration of thoracic kyphosis by posterior instrumentation in adolescent idiopathic scoliosis: comparative radiographic analysis of two methods of reduction
    Jean Luc Clement
    Department of Pediatric Orthopaedic Surgery and Scoliosis Surgery, Hospital Lenval, Nice, France
    Spine (Phila Pa 1976) 33:1579-87. 2008
    ....
  19. ncbi A comparison of the long gamma nail with the sliding hip screw for the treatment of AO/OTA 31-A2 fractures of the proximal part of the femur: a prospective randomized trial
    Tristan M Barton
    Department of Trauma and Orthopaedics, Frenchay Hospital, Frenchay Park Road, Frenchay, Bristol BS6 1LE, United Kingdom
    J Bone Joint Surg Am 92:792-8. 2010
    ..A prospective, randomized, controlled trial was performed to compare the outcome of treatment of these unstable fractures of the proximal part of the femur with either a sliding hip screw or a long gamma nail...
  20. ncbi A laboratory model to evaluate cutout resistance of implants for pertrochanteric fracture fixation
    Mark B Sommers
    Biomechanics Laboratory, Legacy Clinical Research and Technology Center, Portland, OR 97232, USA
    J Orthop Trauma 18:361-8. 2004
    ..To establish a laboratory model of implant cutout, which can evaluate the effect of implant design on cutout resistance in a clinically realistic "worst case" scenario...
  21. ncbi Unilateral versus bilateral pedicle screw fixation in lumbar spinal fusion
    K S Suk
    Department of Orthopaedic Surgery, School of Medicine, Kyung Hee University, Seoul, Korea
    Spine (Phila Pa 1976) 25:1843-7. 2000
    ..Based on the results of this study, unilateral fixation could be used in two-segment lumbar spinal fusion...
  22. ncbi Treatment of proximal tibia fractures using the less invasive stabilization system: surgical experience and early clinical results in 77 fractures
    Peter A Cole
    Department of Orthopedic Surgery, University of Minnesota, Regions Hospital, St Paul, MN, USA
    J Orthop Trauma 18:528-35. 2004
    ..To summarize the surgical experience and clinical results of the first 89 fractures of the proximal tibia treated with the Less Invasive Stabilization System (LISS; Synthes, Paoli, PA)...
  23. ncbi Instrumented and noninstrumented posterolateral fusion in adult spondylolisthesis--a prospective randomized study: part 2
    H Moller
    Department of Orthopaedic Surgery, Karolinska Institutet, Huddinge University Hospital, Stockholm, Sweden
    Spine (Phila Pa 1976) 25:1716-21. 2000
    ..A prospective randomized study was performed...
  24. ncbi Biomechanical study of pedicle screw fixation in severely osteoporotic bone
    Stephen D Cook
    Tulane University Health Sciences Center, Department of Orthopaedic Surgery, 1430 Tulane Avenue, SL 32, New Orleans, LA 70112, USA
    Spine J 4:402-8. 2004
    ..An expandable pedicle screw design has been shown to significantly improve fixation compared to a conventional screw in poor quality bone...
  25. ncbi Potential large vessel injury during thoracolumbar pedicle screw removal. A case report
    J S Vanichkachorn
    Department of Orthopaedic Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
    Spine (Phila Pa 1976) 22:110-3. 1997
    ..Instruments designed to capture the end of the distal screw fragment through an interference fit may allow anterior screw migration to occur, particularly in osteoporotic bone...
  26. ncbi Gamma nails revisited: gamma nails versus compression hip screws in the management of intertrochanteric fractures of the hip: a meta-analysis
    Mohit Bhandari
    Division of Orthopaedic Surgery, McMaster University, Hamilton, ON, Canada
    J Orthop Trauma 23:460-4. 2009
    ..The current meta-analysis aimed to explore the effects of time and Gamma Nail design on the risks of femoral shaft fracture after treatment of extracapsular hip fractures...
  27. ncbi Less invasive stabilization of complex tibial plateau fractures: a biomechanical evaluation of a unilateral locked screw plate and double plating
    T Gosling
    Trauma Department, Hannover Medical School, Hannover, Germany
    J Orthop Trauma 18:546-51. 2004
    ..To compare the vertical subsidence in a bicondylar tibial plateau fracture model stabilized either by a unilateral locked screw plate (LSP) or by double plating...
  28. ncbi Treatment of complex tibial plateau fractures using the less invasive stabilization system plate: clinical experience and a laboratory comparison with double plating
    Kenneth A Egol
    Department of Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, New York, USA
    J Trauma 57:340-6. 2004
    ..The purpose of this study was: 1) to evaluate the clinical use L.I.S.S plating system for stabilization of bicondylar tibial plateau fractures. 2) To compare the biomechanics of this plating system with a double plate construct...
  29. ncbi Unstable trochanteric femoral fractures: extramedullary or intramedullary fixation. Review of literature
    I B Schipper
    Department of Surgery, University Medical Center, Dr Molewaterplein 40, 3015 GD, Rotterdam, The Netherlands
    Injury 35:142-51. 2004
    ..For unstable fractures intramedullary implants are (biomechanically) superior. The review shows that clinical advantages of both treatment methods are suggested and advocated, but still remain to be demonstrated on evidence base...
  30. ncbi Accuracy and safety of thoracic pedicle screw placement in spinal deformities
    Yossi Smorgick
    Spine Unit, Department of Orthopedic Surgery, Assaf Harofeh Medical Center, Zerifin, Israel
    J Spinal Disord Tech 18:522-6. 2005
    ..To determine the safety of pedicle screw fixation in thoracic spine deformity correction...
  31. ncbi Sliding hip screw fixation of trochanteric hip fractures: outcome of 1024 procedures
    N Chirodian
    Department of Trauma and Orthopaedics, Addenbrookes Hospital, Hills Road, Cambridge CB2 2QQ, UK
    Injury 36:793-800. 2005
    ..The final outcome of surgery for the survivors is good, with most patients returning to their pre-fracture level of accommodation and mobility, with minimal pain 1-year post-fracture...
  32. pmc Are short femoral nails superior to the sliding hip screw? A meta-analysis of 24 studies involving 3,279 fractures
    Henry Wynn Jones
    Department of Orthopaedics, Bedford Hospital, Kempston Road, MK42 9DJ, Bedford, UK
    Int Orthop 30:69-78. 2006
    ..63; 95% confidence interval 1.11-2.40) were greater with the IMN compared with the SHS. There was no evidence for a reduced failure rate with IMN in unstable trochanteric fractures...
  33. ncbi Posterior C1-C2 fusion with polyaxial screw and rod fixation
    J Harms
    Department of Orthopaedics and Traumatology, Center for Spinal Surgery, Karlsbad Langensteinbach, Germany
    Spine (Phila Pa 1976) 26:2467-71. 2001
    ..In addition, the initial results of this technique on 37 patients are described...
  34. ncbi The use of microimplants in orthodontic anchorage
    Chung Ho Chen
    Department of Oral and Maxillofacial Surgery, Kaohsiung Medical University, Kaohsiung, Taiwan
    J Oral Maxillofac Surg 64:1209-13. 2006
    ..The aim of this study is to determine the incidence of anchor retention after orthodontic force application for moving teeth, and to determine the relationship of microimplant length to retention rate...
  35. ncbi Pullout strength of pedicle screws augmented with particulate calcium phosphate: an experimental study
    Ata Hashemi
    Department of Mechanical Engineering, McMaster University, 1280 Main Street, Hamilton, ON L8L 568, Canada
    Spine J 9:404-10. 2009
    ..Pressure-injected and in situ curing bone cements have been studied as alternatives in augmenting lumbar pedicle screw fixation but are frequently found to leak outside the confines of the target vertebra...
  36. ncbi Complications in posterior fusion and instrumentation for degenerative lumbar scoliosis
    Kyu Jung Cho
    Inha University Hospital, Incheon, Korea
    Spine (Phila Pa 1976) 32:2232-7. 2007
    ..Radiographic analysis was performed retrospectively. Outcomes and complications were collected prospectively...
  37. pmc Implant-related complications in the treatment of unstable intertrochanteric fractures: meta-analysis of dynamic screw-plate versus dynamic screw-intramedullary nail devices
    L Audige
    AO Clinical Investigation and Documentation, AO ASIF Center, 7270 Davos Platz, Clavadelerstrasse, Switzerland
    Int Orthop 27:197-203. 2003
    ..Iatrogenic femoral fractures associated with the use of DSIN devices represent a rare, but persistent, risk. There was a tendency for less frequent cut-out with intramedullary devices compared with DSP devices...
  38. ncbi A pedicle screw construct gives an enhanced posterior correction of adolescent idiopathic scoliosis when compared with other constructs: myth or reality
    Vagmin Vora
    Penn State Milton S Hershey Medical Center, Hershey, PA 17033 0850, USA
    Spine (Phila Pa 1976) 32:1869-74. 2007
    ..Tricenter retrospective cohort study of 72 patients who underwent posterior correction of Lenke 1 adolescent idiopathic scoliosis (AIS). Each center represented a single surgeon using only one type of construct...
  39. ncbi Comparative analysis of pedicle screw versus hook instrumentation in posterior spinal fusion of adolescent idiopathic scoliosis
    Yongjung J Kim
    Washington University School of Medicine, Department of Orthopaedic Surgery and Shriners Hospitals for Children, St Louis Unit, St Louis, MO, USA
    Spine (Phila Pa 1976) 29:2040-8. 2004
    ..A retrospective matched cohort study...
  40. ncbi Lumbar interbody fusion using the Brantigan I/F cage for posterior lumbar interbody fusion and the variable pedicle screw placement system: two-year results from a Food and Drug Administration investigational device exemption clinical trial
    J W Brantigan
    South Texas Orthopaedic and Spinal Surgery Associates, San Antonio, Texas 78240, USA
    Spine (Phila Pa 1976) 25:1437-46. 2000
    ..CONCLUSIONS: The Brantigan I/F Cage for posterior lumbar interbody fusion and the Variable Screw Placement System are safe and effective for the management of degenerative disc disease...
  41. ncbi Direct vertebral rotation: a new technique of three-dimensional deformity correction with segmental pedicle screw fixation in adolescent idiopathic scoliosis
    Sang Min Lee
    Seoul Spine Institute, Inje University, Sanggye Paik Hospital, Seoul, Korea
    Spine (Phila Pa 1976) 29:343-9. 2004
    ..A prospective study...
  42. ncbi Complications of posterior cervical plating
    J G Heller
    Department of Orthopaedics, Emory University School of Medicine, Atlanta, Georgia, USA
    Spine (Phila Pa 1976) 20:2442-8. 1995
    ..This study finds the risk of lateral mass screw insertion to be considerably less than predicted in vitro. The present study reports other complications that were not predicted in laboratory studies...
  43. ncbi Reliability of predictors for screw cutout in intertrochanteric hip fractures
    Kirstin De Bruijn
    Department of Surgery, Erasmus MC, University Medical Center Rotterdam, P O Box 2040, 3000 CA Rotterdam, The Netherlands
    J Bone Joint Surg Am 94:1266-72. 2012
    ....
  44. pmc Far cortical locking can reduce stiffness of locked plating constructs while retaining construct strength
    Michael Bottlang
    Legacy Biomechanics Laboratory, 1225 N E 2nd Avenue, Portland, OR 97215, USA
    J Bone Joint Surg Am 91:1985-94. 2009
    ..In the present study, we tested whether a novel strategy for stiffness reduction, termed far cortical locking, can significantly reduce the stiffness of a locked plating construct while retaining its strength...
  45. pmc The best surgical treatment for type II fractures of the dens is still controversial
    Vincenzo Denaro
    Department of Orthopaedics and Trauma Surgery, University Campus Bio Medico of Rome, Via Alvaro del Portillo, 200, 00155, Rome, Italy
    Clin Orthop Relat Res 469:742-50. 2011
    ..Reports on postoperative status of patients who underwent surgery for such injuries are limited to small case series, and it is unclear whether any one technique produces better outcomes than another...
  46. ncbi Surgical management of hip fractures: an evidence-based review of the literature. II: intertrochanteric fractures
    Kevin Kaplan
    Kerlan Jobe Orthopaedic Clinic, Los Angeles, CA, USA
    J Am Acad Orthop Surg 16:665-73. 2008
    ..Although unstable fractures may theoretically benefit from load-sharing intramedullary implants, this result has not been demonstrated in the current evidence-based literature...
  47. ncbi A randomised comparison of AMBI, TGN and PFN for treatment of unstable trochanteric fractures
    S Papasimos
    Department of Orthopedics, School of Medicine, University of Patras, Greece
    Arch Orthop Trauma Surg 125:462-8. 2005
    ....
  48. ncbi Biomechanical characterisation of a degradable magnesium-based (MgCa0.8) screw
    Hazibullah Waizy
    Department of Orthopaedic Surgery, Hanover Medical School, Hanover, Germany
    J Mater Sci Mater Med 23:649-55. 2012
    ..A maximum load capacity of 28 ± 7.6 N/h was determined. Our biomechanical data suggests that this biodegradable screw provides a promising bone-screw-fixation and has great potential for medical application...
  49. ncbi The importance of lag screw position for the stabilization of trochanteric fractures with a sliding hip screw: a subject-specific finite element study
    Jérôme M Goffin
    Department of Orthopaedic Surgery, The University of Edinburgh, The Royal Infirmary of Edinburgh at Little France, Old Dalkeith Road, Edinburgh EH16 4SU, UK
    J Orthop Res 31:596-600. 2013
    ..Further clinical studies investigating lag screw cut-out should attempt to find more reliable predictors of cut-out that should better reflect the biomechanics and subject-specificity of the femoral head...
  50. pmc Posterior lumbar interbody fusion versus posterolateral fusion in spondylolisthesis: a prospective controlled study in the Han nationality
    Lei Cheng
    Orthopaedic and Trauma Department, Qilu Hospital of Shandong University, No 107 Wenhua Xi Road, Jinan, Shandong, 250012, People s Republic of China
    Int Orthop 33:1043-7. 2009
    ..There was no significant statistical difference in clinical and functional outcome in the two groups. The PLIF group presented a better fusion rate than the PLF group...
  51. ncbi Fixation of ankle syndesmotic injuries: comparison of tightrope fixation and syndesmotic screw fixation for accuracy of syndesmotic reduction
    Gohar A Naqvi
    Department of Trauma and Orthopaedics, Our Lady of Lourdes Hospital, Drogheda, Ireland
    Am J Sports Med 40:2828-35. 2012
    ..Ankle syndesmotic injuries are complex and require anatomic reduction and fixation to restore the normal biomechanics of the ankle joint and prevent long-term complications...
  52. ncbi Evaluation of orthodontic mini-implant anchorage in premolar extraction therapy in adolescents
    Judah S Garfinkle
    Department of Plastic Surgery and Orthodontics, Oregon Health and Science University, Portland, OR 97239, USA
    Am J Orthod Dentofacial Orthop 133:642-53. 2008
    ..The purpose of this study was to determine the success rate, positional stability, and patient evaluation of orthodontic mini-implants (OMIs)...
  53. ncbi Augmentation of pedicle screw stability with calcium sulfate cement in osteoporotic sheep: biomechanical and screw-bone interfacial evaluation
    Da Liu
    Xijing Hospital, Institution of Orthopaedics, Fourth Military Medical University, Xi an, Shaanxi Province, PR China
    J Spinal Disord Tech 24:235-41. 2011
    ..Augmentation of pedicle screws with calcium sulfate cement (CSC) was performed in osteoporotic sheep. Biomechanical tests, micro-computed tomography (CT) analysis, and histological observation were performed...
  54. ncbi Anterior screw fixation of type II odontoid fractures in the elderly
    Iona Collins
    The Centre for Spinal Studies and Surgery I C, Queen s Medical Centre, Nottingham, United Kingdom
    J Trauma 65:1083-7. 2008
    ..The purpose of this study is to investigate the surgical outcomes of anterior screw fixation of type II B odontoid fractures in the elderly...
  55. ncbi Surface polishing positively influences ease of plate and screw removal
    J S Hayes
    AO Research Institute Davos, AO Foundation, Clavadelerstrasse, 8, CH 7270, Davos Platz, Switzerland
    Eur Cell Mater 19:117-26. 2010
    ..Future studies aim to assess the potential of this technology in the next level of complication, a fracture model...
  56. ncbi Osteoporotic pertrochanteric hip fractures: management and current controversies
    Dean G Lorich
    Orthopaedic Trauma Service, Weill College of Medicine of Cornell University, Hospital for Special Surgery, New York, New York, USA
    Instr Course Lect 53:441-54. 2004
    ..For patients with a reverse obliquity fracture pattern, the advantage of the intramedullary construct has been shown...
  57. ncbi The dynamic locking screw (DLS) can increase interfragmentary motion on the near cortex of locked plating constructs by reducing the axial stiffness
    Stefan Döbele
    Klinik für Orthopädie und Unfallchirurgie, Abteilung fur Unfallchirurgie, Klinikum rechts der Isar, Technische Universitat Munchen, Ismaninger Str 22, 81675, Munchen, Germany
    Langenbecks Arch Surg 395:421-8. 2010
    ..the bridged plate technique, decrease primarily the bending stiffness. Thus, the interfragmentary motion increases only on the far cortical side by bending the plate. To solve this problem, the dynamic locking screw (DLS) was developed...
  58. pmc In vitro study of accuracy of cervical pedicle screw insertion using an electronic conductivity device (ATPS part III)
    Heiko Koller
    Department for Traumatology and Sport Injuries, Paracelsus Medical University Salzburg, Salzburg, Austria
    Eur Spine J 18:1300-13. 2009
    ..In addition, we presented a reasonable laboratory setting for the clinical introduction of an ATPS-plate system...
  59. pmc Biomechanical and histological evaluation of an expandable pedicle screw in osteoporotic spine in sheep
    Shiyong Wan
    Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, 15 West Changle Road, Xi an, 710032 Shaanxi Province, China
    Eur Spine J 19:2122-9. 2010
    ..The EPS may be of value in treating patients with osteoporosis and warrants further clinical studies...
  60. ncbi Predictive factors for cutting-out in femoral intramedullary nailing
    Antonio Lobo-Escolar
    Department of Orthopaedic and Trauma Surgery, Miguel Servet University Hospital, Aragon Health Science Institute, Zaragoza, Spain
    Injury 41:1312-6. 2010
    ....
  61. ncbi Posterior fixation of the upper cervical spine: contemporary techniques
    Richard J Bransford
    Department of Sports Medicine and Orthopaedic Surgery, University of Washington Medical Center, Seattle, WA, USA
    J Am Acad Orthop Surg 19:63-71. 2011
    ..Awareness of the risks and benefits associated with the use of modern instrumentation and thorough familiarity with the anatomy of the upper cervical spine are essential to avoid complications and optimize outcomes...
  62. ncbi Undetected vertebral artery groove and foramen violations during C1 lateral mass and C2 pedicle screw placement
    Jin S Yeom
    Department of Orthopaedic Surgery, Seoul National University, Seoul, Republic of Korea
    Spine (Phila Pa 1976) 33:E942-9. 2008
    ..Prospective consecutive case series...
  63. ncbi Biomechanical analysis of different techniques in revision spinal instrumentation: larger diameter screws versus cement augmentation
    Dirk W Kiner
    Department of Orthopaedic Surgery, University of Tennessee College of Medicine, Chattanooga, TN 37415, USA
    Spine (Phila Pa 1976) 33:2618-22. 2008
    ..Biomechanical analysis...
  64. pmc Tip-apex distance of intramedullary devices as a predictor of cut-out failure in the treatment of peritrochanteric elderly hip fractures
    Jeffrey A Geller
    New York Presbyterian Columbia University Medical Center, 622 West 168th Street, PH 1147, New York, NY 10032, USA
    Int Orthop 34:719-22. 2010
    ..001). As in sliding hip screws, surgeons should strive for a TAD less than 25 mm when using IM devices in the treatment of PT hip fractures to help avoid lag screw cut-out...
  65. ncbi Factors associated with the success rate of orthodontic miniscrews placed in the upper and lower posterior buccal region
    Cheol Hyun Moon
    Department of Orthodontics, Gachon Medical School, Gil Medical Center, Incheon, South Korea
    Angle Orthod 78:101-6. 2008
    ..To determine the success rate and the factors related to the success rate of orthodontic miniscrew implants (OMI) placed at the attached gingiva of the posterior buccal region...
  66. ncbi Fracture displacement and screw cutout after open reduction and locked plate fixation of proximal humeral fractures [corrected]
    Kevin C Owsley
    University of Rochester Medical Center, 601 Elmwood Avenue, Box 665, Rochester, NY 14642, USA
    J Bone Joint Surg Am 90:233-40. 2008
    ..In this study, we assessed the radiographic and clinical results of a single surgeon's experience treating proximal humeral fractures with a locked proximal humeral plate...
  67. ncbi Comparison of a novel FiberWire-button construct versus metallic screw fixation in a syndesmotic injury model
    Kevin Forsythe
    Department of Orthopaedic Surgery and Rehabilitation, Loyola University Medical Center, 2160 South First Avenue, Maguire Center 1700, Maywood, IL 60153, USA
    Foot Ankle Int 29:49-54. 2008
    ..This study evaluates the ability of a FiberWire-button implant (Arthrex, Naples, FL) to maintain syndesmotic reduction as compared with a metallic screw...
  68. ncbi Distal femoral fixation: a biomechanical comparison of trigen retrograde intramedullary (i.m.) nail, dynamic condylar screw (DCS), and locking compression plate (LCP) condylar plate
    Jake P Heiney
    Department of Orthopaedic Surgery, ProMedica Health System, Toledo, Ohio, USA
    J Trauma 66:443-9. 2009
    ..The purpose of this study was to establish if there are biomechanical differences between implants in stiffness of construct, microdisplacement, and fatigue failure in a supracondylar femoral fracture model...
  69. ncbi Lateral mass screw complications: analysis of 1662 screws
    Pavlos Katonis
    Department of Orthopaedics, Crete University, Medical School, Herakleion, Athens, Greece
    J Spinal Disord Tech 24:415-20. 2011
    ..Retrospective, consecutive patient series...
  70. ncbi The fixation strength of a novel ACL soft-tissue graft fixation device compared with conventional interference screws: a biomechanical study in vitro
    Camilla Halewood
    Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ, UK
    Knee Surg Sports Traumatol Arthrosc 19:559-67. 2011
    ..The EZ KneeSpan device also had similar tibial and higher femoral ultimate fixation strength than an IS...
  71. pmc A prospective randomized study of ACL-reconstructions using bone-patellar tendon-bone grafts fixed with bioabsorbable or metal interference screws
    Jon Olav Drogset
    Trondheim University Hospital, Norwegian University of Science and Technology, Trondheim, Norway
    Knee Surg Sports Traumatol Arthrosc 19:753-9. 2011
    ..Bioabsorbable screws are, at the expense of metal screws, increasingly used as fixation device in ACL-reconstructions. The possible advantages with bioabsorbable screws are better postoperative MRI evaluations and easier revision surgery...
  72. ncbi [Complications of dynamic hip screw treatment for proximal femoral fractures]
    M Hrubina
    Ortopedické oddĕlení Nemocnice Pelhrimov
    Acta Chir Orthop Traumatol Cech 77:395-401. 2010
    ..The average patient age was 81.8 years (21-101). Twenty-six patients had surgery for bilateral fractures...
  73. ncbi Thoracic pedicle screw fixation in spinal deformities: are they really safe?
    S I Suk
    Seoul Spine Institute, Inje University Paik Hospital, Seoul, Korea
    Spine (Phila Pa 1976) 26:2049-57. 2001
    ..A retrospective study...
  74. pmc Effect of the cord pretension of the Dynesys dynamic stabilisation system on the biomechanics of the lumbar spine: a finite element analysis
    Chien Lin Liu
    Department of Orthopaedic Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
    Eur Spine J 20:1850-8. 2011
    ..In addition, use of a 300 N cord pretension causes a much higher stiffness at the implanted level when compared with the intact lumbar spine...
  75. ncbi Morphometric and volumetric analysis of the lateral masses of the lower cervical spine
    Kalil G Abdullah
    Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, USA
    Spine (Phila Pa 1976) 34:1476-9. 2009
    ..Morphometric and volumetric analysis...
  76. ncbi Minimally invasive microendoscopy-assisted transforaminal lumbar interbody fusion with instrumentation
    Robert E Isaacs
    Duke University Medical Center, Durham, North Carolina 27710, USA
    J Neurosurg Spine 3:98-105. 2005
    ....
  77. ncbi Survival analyses of surgical miniscrews as orthodontic anchorage
    Nita Viwattanatipa
    Department of Orthodontics, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
    Am J Orthod Dentofacial Orthop 136:29-36. 2009
    ..The objectives of this study were to determine the survival rate of titanium surgical miniscrews and the clinical parameters that posed the highest risks for failure...
  78. ncbi Prediction of fixation failure after sliding hip screw fixation
    Humayon Pervez
    Department of Orthopaedics, Peterborough District Hospital, Peterborough PE3 6DA, UK
    Injury 35:994-8. 2004
    ....
  79. pmc More intramedullary nails and arthroplasties for treatment of hip fractures in Sweden
    Cecilia Rogmark
    Department of Orthopaedics, Lund University, Skane University Hospital, Malmo, Sweden
    Acta Orthop 81:588-92. 2010
    ..We describe the changes in Sweden over the period 1998–2007 and the regional differences in treatment. Patients and methods Data on 144,607 patients were drawn from the National Patient Register...
  80. ncbi Treatment of anterior cruciate ligament injuries with special reference to surgical technique and rehabilitation: an assessment of randomized controlled trials
    Daniel Andersson
    Department of Orthopaedics, Sahlgrenska University Hospital, Molndal, Sweden
    Arthroscopy 25:653-85. 2009
    ..A secondary aim was to clarify relative strengths and weaknesses of the selected studies, resolve literature conflicts, and finally, evaluate the need for further studies...
  81. ncbi Suture-button versus screw fixation in a syndesmosis rupture model: a biomechanical comparison
    Sandeep P Soin
    Baltimore, MD, USA
    Foot Ankle Int 30:346-52. 2009
    ..This study examined how much fibular motion occurs during cyclic loading of ankles repaired with suture-buttons or screws relative to one with intact ligaments...
  82. ncbi A retrospective analysis of the failure rate of three different orthodontic skeletal anchorage systems
    Yi Jane Chen
    Department of Orthodontics, School of Dentistry, National Taiwan University, and Dental Department, National Taiwan University Hospital, Taipei, Taiwan
    Clin Oral Implants Res 18:768-75. 2007
    ....
  83. ncbi Comparison of intramedullary nailing versus plate-screw fixation of extra-articular metacarpal fractures
    Kagan Ozer
    Department of Orthopedics, Denver Health Medical Center, University of Colorado School of Medicine, Denver, CO, USA
    J Hand Surg Am 33:1724-31. 2008
    ..To compare the clinical and radiographic outcomes of intramedullary nail (IMN) fixation of metacarpal fractures with those of plate-screw (PS) fixation...
  84. pmc Accuracy of pedicle screw placement: a systematic review of prospective in vivo studies comparing free hand, fluoroscopy guidance and navigation techniques
    Ioannis D Gelalis
    Department of Orthopaedic Surgery and Traumatology, School of Medicine, University of Ioannina, Pantazidi Street 11, 45221 Ioannina, Epirus, Greece
    Eur Spine J 21:247-55. 2012
    ..The purpose of the present study was to perform a systematic review of all available prospective evidence regarding pedicle screw insertion techniques in the thoracic and lumbar human spine...
  85. ncbi Comparison of the percutaneous screw placement precision of isocentric C-arm 3-dimensional fluoroscopy-navigated pedicle screw implantation and conventional fluoroscopy method with minimally invasive surgery
    Hiroaki Nakashima
    Department of Orthopedic Surgery, Chubu Rosai Hospital, Aichi, Japan
    J Spinal Disord Tech 22:468-72. 2009
    ..Retrospective clinical study to compare the percutaneous screw placement precision of isocentric C-arm (Iso-C) 3-dimensional fluoroscopy-navigated pedicle screw implantation and conventional fluoroscopy...
  86. ncbi Thoracic pedicle screw instrumentation: the learning curve and evolution in technique in the treatment of adolescent idiopathic scoliosis
    Baron S Lonner
    Department of Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, NY 10021, USA
    Spine (Phila Pa 1976) 34:2158-64. 2009
    ..Retrospective review...
  87. pmc Assessment of different screw augmentation techniques and screw designs in osteoporotic spines
    S Becker
    Spine Centre, Orthopaedic Hospital Speising, Vienna, Austria
    Eur Spine J 17:1462-9. 2008
    ..Nevertheless, using a properly designed perforated screw will facilitate augmentation and instrumentation in osteoporotic spines...
  88. ncbi Injuries to the tibiofibular syndesmosis
    R Dattani
    East Surrey Hospital, Canada Avenue, Redhill RH1 5RH, UK
    J Bone Joint Surg Br 90:405-10. 2008
    ..This paper reviews the relevant anatomy, the clinical and radiological diagnosis and the mechanism of trauma and alternative methods of treatment for injuries to the syndesmosis...
  89. ncbi Sclerostin antibody treatment enhances metaphyseal bone healing in rats
    Fredrik Agholme
    Orthopedics, Department of Clinical and Experimental Medicine, Faculty of Medicine, Linkoping University, Linkoping, Sweden
    J Bone Miner Res 25:2412-8. 2010
    ..Thus, as measured by the amount of bone and its mechanical resistance, the sclerostin antibody increased bone formation during metaphyseal repair but also in untraumatized bone...
  90. ncbi The anterior and medial reduction of intertrochanteric fractures: a simple method to obtain a stable reduction
    James B Carr
    University of South Carolina, Department of Orthopedic Trauma, Palmetto Health Richland Hospital, Columbia, SC, USA
    J Orthop Trauma 21:485-9. 2007
    ..This reestablishes a normal neck shaft angle and prevents excessive collapse of the fracture site. The maneuver is described in the context of the fracture pathoanatomy and the use of a fracture table...
  91. ncbi The effect of C-arm malrotation on iliosacral screw placement
    Philip Wolinsky
    Department of Orthopedic Surgery, University of California at Davis, Sacramento, California 95817, USA
    J Orthop Trauma 21:427-34. 2007
    ..We sought to determine whether inaccurate C-arm positioning could create images that lead to inaccurate interpretation of iliosacral screw positions...
  92. ncbi The effect of sacral fracture malreduction on the safe placement of iliosacral screws
    Mark C Reilly
    Department of Orthopaedic Surgery, New Jersey Medical School, Newark, New Jersey 07103, USA
    J Orthop Trauma 20:S37-43. 2006
    ..To determine the effects of cranial displacement on the safe placement of iliosacral screws for zone II sacral fractures...
  93. ncbi Augmentation of pedicle screw fixation strength using an injectable calcium sulfate cement: an in vivo study
    Xiaodong Yi
    Department of Orthopedic Surgery, Peking University First Hospital, Beijing, China
    Spine (Phila Pa 1976) 33:2503-9. 2008
    ..An in vivo landrace model of cement augmentation of pedicle screw was established, and axial pull-out tests and histological analysis were performed...
  94. ncbi Integrity of the lateral femoral wall in intertrochanteric hip fractures: an important predictor of a reoperation
    Henrik Palm
    Department of Orthopaedic Surgery, Copenhagen University Hospital of Hvidovre, Hvidovre, Denmark
    J Bone Joint Surg Am 89:470-5. 2007
    ..We investigated the importance of an intact lateral femoral wall as a factor in postoperative fracture displacement after fixation with a sliding compression hip screw...
  95. ncbi Transosseous fixation of the distal tibiofibular syndesmosis: comparison of an interosseous suture and endobutton to traditional screw fixation in 50 cases
    James M Cottom
    Sarasota Orthopedic Associates, 2750 Bahia Vista, Sarasota, FL 34239, USA
    J Foot Ankle Surg 48:620-30. 2009
    ..The results of this study indicate that the interosseous suture with endobuttons is a reasonable option for repair of ankle syndesmotic injuries, and may be as effective as traditional internal screw fixation...
  96. ncbi Syndesmotic screw fixation in Weber C ankle injuries--should the screw be removed before weight bearing?
    David Paul Bell
    Department of Orthopaedic Surgery, Changi General Hospital, 2 Simei Street 3, Singapore 529889, Republic of Singapore
    Injury 37:891-8. 2006
    ..To compare the outcomes of Weber C ankle fractures treated with syndesmotic screw fixation where the screw was removed prior to weight bearing against those where the screw was left in situ indefinitely...
  97. pmc Titanium-alloy enhances bone-pedicle screw fixation: mechanical and histomorphometrical results of titanium-alloy versus stainless steel
    F B Christensen
    Orthopaedic Research Laboratory, University Hospital of Aarhus, Denmark
    Eur Spine J 9:97-103. 2000
    ..There was no correlation between the screw removal torque and the pull-out strength, which indicates that the peripheral bone structure around the screw was unaffected by the choice of metal...
  98. ncbi Biomechanics of odontoid fracture fixation. Comparison of the one- and two-screw technique
    R Sasso
    Department of Orthopaedic Surgery, Baylor College of Medicine, Houston, Texas
    Spine (Phila Pa 1976) 18:1950-3. 1993
    ....
  99. ncbi Efficacy of anterior odontoid screw fixation in elderly patients with Type II odontoid fractures
    J S Harrop
    Department of Neurosurgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
    Neurosurg Focus 8:e6. 2000
    ..In this study the authors examine the efficacy of anterior odontoid screw fixation in a high-risk group of 10 elderly patients (> 65 years of age) treated for Type II odontoid fractures...
  100. ncbi Acutrak screw fixation versus cast immobilisation for undisplaced scaphoid waist fractures
    L Adolfsson
    Department of Plastic Surgery, Hand Surgery and Burns, University Hospital, , Sweden
    J Hand Surg Br 26:192-5. 2001
    ..Acute percutaneous internal fixation of undisplaced scaphoid waist fractures using the Acutrak screw allows early mobilisation without adverse effects on fracture healing...
  101. ncbi The use of small titanium screws for orthodontic anchorage
    T Deguchi
    Department of Orthodontics, Okayama University Graduate School of Medicine and Dentistry, 2 5 1, Shikata cho, Japan
    J Dent Res 82:377-81. 2003
    ..Analysis of these data indicates that small titanium screws were able to function as rigid osseous anchorage against orthodontic load for 3 months with a minimal (under 3 weeks) healing period...

Research Grants11

  1. Effect of Lumbar Hypo &Hypermobility on Sensory Responses to Spinal Manipulation
    WILLIAM RAY REED; Fiscal Year: 2013
    ..Spinal joint hypomobility will be created by placing unilateral bone screws through the facet joint;hypermobility will be created via unilateral facetectomies...
  2. SIGNIFICANCE OF ALLERGY TO ORTHOPEDIC IMPLANTS
    Katharine Merritt; Fiscal Year: 1980
    ..These animals are made sensitive to Ni, Co, or Cr by injection and then bone screws are implanted...
  3. P I/II Intraventricular DepoCyt (OD # 06-2348) in Glioblastoma (76,730, 11/06)
    BRUCE MICHAEL FRANKEL; Fiscal Year: 2010
    ..This has also been the basis for successful application and granting of Orphan-Drug designation for cytarabine (Ara-C) liposome injection (trade name: DepoCyt) for the treatment of gliomas. ..
  4. Mineral and Mechanical Properties of Bone
    Sarandeep Huja; Fiscal Year: 2005
    ..Future interventional studies will examine the mechanisms for the initial and the long-term adaptive response in material properties of bone. ..
  5. Polysomal RNA Antitumor Immunity
    John Chi; Fiscal Year: 2005
    ..Results from these experiments will help characterize the potential use of dendritic cells transfected with polysomal RNA in creating antigen specific tumor vaccines for brain tumors. ..
  6. Neurogenesis in the Human Brain
    Alfredo Quinones Hinojosa; Fiscal Year: 2003
    ....
  7. 2006 Summer Bioengineering Conference
    Vijay Goel; Fiscal Year: 2006
    ..This should help create the necessary work force of varied interests in the health care field. [unreadable] [unreadable] [unreadable]..
  8. Surgical Management of Facial Nerve Injury
    Theresa Hadlock; Fiscal Year: 2007
    ..The academic environment is one of complete dedication to advancing both biomedical science and patient care through careful study and diligent investigation, and of support for the mentored investigator. [unreadable] [unreadable]..
  9. Prevention of Neck Injuries in Older Adults During Rear Motor Vehicle Collsions
    PAUL IVANCIC; Fiscal Year: 2009
    ..The proposed project will provide important research-based data that may form the basis for future safety standards and help to decrease the frequency and severity of neck injuries in older adults, thus benefiting society. ..
  10. Effect of vertebral endplate composition on disc health
    Frank Acosta; Fiscal Year: 2006
    ..unreadable] [unreadable]..
  11. Biologic Mechanisms:Tooth Movement & Craniofacial Adapta
    James Mah; Fiscal Year: 2005
    ..The audience of approximately 300 will be comprised of basic scientists (40%), clinicians (35%), and students (25%). A proceedings book will be published 8-10 months after the conference and distributed world-wide. ..