internal fixators

Summary

Summary: Internal devices used in osteosynthesis to hold the position of the fracture in proper alignment. By applying the principles of biomedical engineering, the surgeon uses metal plates, nails, rods, etc., for the correction of skeletal defects.

Top Publications

  1. ncbi Corrosion on an internal spinal fixator system
    U Vieweg
    Department of Neurosurgery, University of Bonn, Germany
    Spine (Phila Pa 1976) 24:946-51. 1999
  2. ncbi Surgical treatment of three and four-part proximal humeral fractures
    Brian D Solberg
    Cedars Sinai Medical Center, Los Angeles, California, USA
    J Bone Joint Surg Am 91:1689-97. 2009
  3. 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
  4. ncbi Adjacent segment mobility after rigid and semirigid instrumentation of the lumbar spine
    Balkan Cakir
    Department of Orthopaedic Surgery, University of Ulm, Ulm, Germany
    Spine (Phila Pa 1976) 34:1287-91. 2009
  5. ncbi Solis cage (PEEK) for anterior cervical fusion: preliminary radiological results with emphasis on fusion and subsidence
    Arvind G Kulkarni
    Spine Division, Department of Orthopaedics, National University Hospital, 5 Lower Kent Ridge Road, Singapore 119074
    Spine J 7:205-9. 2007
  6. pmc StabilimaxNZ) versus simulated fusion: evaluation of adjacent-level effects
    Manohar M Panjabi
    Biomechanics Laboratory, Yale University, Orthopaedics and Rehabilitation, New Haven, CT 06510, USA
    Eur Spine J 16:2159-65. 2007
  7. pmc The effect of dynamic, semi-rigid implants on the range of motion of lumbar motion segments after decompression
    Tobias L Schulte
    Department of Orthopaedics, University Hospital Munster, Albert Schweitzer Strasse 33, 48149, Munster, Germany
    Eur Spine J 17:1057-65. 2008
  8. ncbi Segmental stability and compressive strength of posterior lumbar interbody fusion implants
    A Tsantrizos
    Orthopaedic Research Laboratory, Division of Orthopaedic Surgery, McGill University, Montreal, Quebec, Canada
    Spine (Phila Pa 1976) 25:1899-907. 2000
  9. ncbi Biomechanical analysis of plate osteosynthesis systems for proximal humerus fractures
    James P Lever
    Department of Surgery, University of Toronto, and Martin Orthopaedic Biomechanics Laboratory, St Michael s Hospital, Toronto, Canada
    J Orthop Trauma 22:23-9. 2008
  10. ncbi Subpectoral biceps tenodesis with interference screw fixation
    Augustus D Mazzocca
    Department of Orthopaedic Surgery, University of Connecticut School of Medicine, Farmington, Connecticut, USA
    Arthroscopy 21:896. 2005

Detail Information

Publications250 found, 100 shown here

  1. ncbi Corrosion on an internal spinal fixator system
    U Vieweg
    Department of Neurosurgery, University of Bonn, Germany
    Spine (Phila Pa 1976) 24:946-51. 1999
    ..Thirteen spinal fixators with 26 stabilization bridges and 52 pedicle screws and a mean length of implantation of 10 months were prospectively examined for corrosion...
  2. ncbi Surgical treatment of three and four-part proximal humeral fractures
    Brian D Solberg
    Cedars Sinai Medical Center, Los Angeles, California, USA
    J Bone Joint Surg Am 91:1689-97. 2009
    ..Fixed-angle locked plates that maintain angular stability under load have been proposed as an alternative to hemiarthroplasty for the treatment of some osteoporotic fracture types...
  3. 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...
  4. ncbi Adjacent segment mobility after rigid and semirigid instrumentation of the lumbar spine
    Balkan Cakir
    Department of Orthopaedic Surgery, University of Ulm, Ulm, Germany
    Spine (Phila Pa 1976) 34:1287-91. 2009
    ..Retrospective radiographic analysis of lumbar spine range of motion (ROM) after monosegmental fusion and posterior dynamic stabilization at the level L4-L5...
  5. ncbi Solis cage (PEEK) for anterior cervical fusion: preliminary radiological results with emphasis on fusion and subsidence
    Arvind G Kulkarni
    Spine Division, Department of Orthopaedics, National University Hospital, 5 Lower Kent Ridge Road, Singapore 119074
    Spine J 7:205-9. 2007
    ..Recent literature has raised some apprehensions with regard to the usage of cervical cages...
  6. pmc StabilimaxNZ) versus simulated fusion: evaluation of adjacent-level effects
    Manohar M Panjabi
    Biomechanics Laboratory, Yale University, Orthopaedics and Rehabilitation, New Haven, CT 06510, USA
    Eur Spine J 16:2159-65. 2007
    ..However, it did not stabilize the decompressed specimen in torsion...
  7. pmc The effect of dynamic, semi-rigid implants on the range of motion of lumbar motion segments after decompression
    Tobias L Schulte
    Department of Orthopaedics, University Hospital Munster, Albert Schweitzer Strasse 33, 48149, Munster, Germany
    Eur Spine J 17:1057-65. 2008
    ..Whether they can improve the clinical outcome must still be verified in prospective clinical investigations...
  8. ncbi Segmental stability and compressive strength of posterior lumbar interbody fusion implants
    A Tsantrizos
    Orthopaedic Research Laboratory, Division of Orthopaedic Surgery, McGill University, Montreal, Quebec, Canada
    Spine (Phila Pa 1976) 25:1899-907. 2000
    ..The PLIF Allograph Spacer is biomechanically equivalent to titanium cages but is devoid of the deficiencies associated with other cage technologies. Therefore, the PLIF Allograft Spacer is a valid alternative to conventional cages...
  9. ncbi Biomechanical analysis of plate osteosynthesis systems for proximal humerus fractures
    James P Lever
    Department of Surgery, University of Toronto, and Martin Orthopaedic Biomechanics Laboratory, St Michael s Hospital, Toronto, Canada
    J Orthop Trauma 22:23-9. 2008
    ..To biomechanically assess five proximal, humeral, fracture-plate-fixation systems...
  10. ncbi Subpectoral biceps tenodesis with interference screw fixation
    Augustus D Mazzocca
    Department of Orthopaedic Surgery, University of Connecticut School of Medicine, Farmington, Connecticut, USA
    Arthroscopy 21:896. 2005
    ..The subpectoral approach with interference screw fixation appears to be a promising, reproducible technique for tenodesing the biceps...
  11. ncbi Increasing bending strength of tibial locking screws: mechanical tests and finite element analyses
    Ching Kong Chao
    Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
    Clin Biomech (Bristol, Avon) 22:59-66. 2007
    ..Healing of tibial fractures treated by locked nailing is threatened by locking screw failure. However, the effects of the design factors of the screws on their mechanical strength have rarely been studied...
  12. ncbi Influence of Dynesys system screw profile on adjacent segment and screw
    Chien Lin Liu
    Faculty of Medicine, National Yang Ming University, Taipei, Taiwan
    J Spinal Disord Tech 23:410-7. 2010
    ..Displacement-controlled finite element analysis was used to evaluate the mechanical behavior of the lumbar spine after insertion of the Dynesys dynamic stabilization system...
  13. ncbi Flexible fixation and fracture healing: do locked plating 'internal fixators' resemble external fixators?
    Hagen Schmal
    Department of Orthopaedic Surgery, University of Freiburg Medical Center, Freiburg, Germany
    J Orthop Trauma 25:S15-20. 2011
    External and internal fixators use bone screws that are locked to a plate or bar to prevent periosteal compression and associated impairment of blood supply...
  14. ncbi Natural history and treatment of fibrous dysplasia of bone: a multicenter clinicopathologic study promoted by the European Pediatric Orthopaedic Society
    Ernesto Ippolito
    Department of Orthopedic Surgery, University of Rome Tor Vergata, Rome, Italy
    J Pediatr Orthop B 12:155-77. 2003
    ..5) Evaluation of patients with FD at orthopedic centers should include, but rarely does, a thorough evaluation of endocrine profile and phosphate metabolism, and proper pathological and radiographic assessment...
  15. ncbi Statistical methods in finite element analysis
    Fazilat H Dar
    Department of Bio Medical Physics and Bio Engineering, University of Aberdeen, Scotland, UK
    J Biomech 35:1155-61. 2002
    ..In addition to showing how each method may be used on its own, we also show how computational effort may be minimised by first identifying the most important input variables before determining the effects of imprecision...
  16. ncbi Standard surgical protocol to treat elbow dislocations with radial head and coronoid fractures
    David M W Pugh
    Upper Extremity Reconstructive Service, St Michael s Hospital, Toronto, Ontario, Canada
    J Bone Joint Surg Am 86:1122-30. 2004
    ....
  17. ncbi Treatment of persistent instability after posterior fracture-dislocation of the elbow: restoring stability and mobility by internal fixation and hinged external fixation
    Anne Kathrine B Sørensen
    Shoulder and Elbow Section, Orthopedic Department T, Herlev Hospital, Copenhagen University, Herlev, Denmark
    J Shoulder Elbow Surg 20:1300-9. 2011
    ..We present the results after surgical restoration of stability in complex fracture-dislocations of the elbow using early postoperative mobilization with a hinged external fixator after internal reconstruction of the static stabilizers...
  18. pmc Dynamic stabilization adjacent to single-level fusion: part I. Biomechanical effects on lumbar spinal motion
    Patrick Strube
    Clinic for Orthopaedics, Center for Musculoskeletal Surgery, Charite Universitatsmedizin Berlin, Chariteplatz 1, 10117 Berlin, Germany
    Eur Spine J 19:2171-80. 2010
    ..Additional fixation shifts motion to the superior segment, according to fixation stiffness. Therefore, dynamic instrumentation cannot be recommended if prevention of hyper-mobility in the adjacent levels is the main target...
  19. ncbi Treatment of Tossy III acromioclavicular joint injuries using hook plates and ligament suture
    Khaled Hamed Salem
    Department of Trauma, Hand, Plastic and Reconstructive Surgery, University of Ulm, Ulm, Germany
    J Orthop Trauma 23:565-9. 2009
    ..The management of acromioclavicular (AC) injuries has long been debated. We analyzed our results in treating such cases using hook plates and ligament suture...
  20. pmc Tip apex distance, hip screw placement, and neck shaft angle as potential risk factors for cut-out failure of hip screws after surgical treatment of intertrochanteric fractures
    Hagen Andruszkow
    Trauma Department, Hannover Medical School, Carl Neuberg Str 1, 30625 Hannover, Germany
    Int Orthop 36:2347-54. 2012
    ..The purpose of our study was to confirm potential risk factors for cut-out of hip screws of intertrochanteric fractures and to provide recommendations for practical clinical use...
  21. ncbi Treatment of unstable pelvic ring injuries with an internal anterior fixator and posterior fixation: initial clinical series
    Rahul Vaidya
    Department of Orthopedic Surgery, Detroit Receiving Hospital and University Health Center, Detroit, MI, USA
    J Orthop Trauma 26:1-8. 2012
    ..To present a novel internal fixation device for stabilizing unstable pelvic fractures using supra-acetabular spinal pedicle screws and a subcutaneous connecting rod (INFIX)...
  22. ncbi Effect of spacer diameter of the Dynesys dynamic stabilization system on the biomechanics of the lumbar spine: a finite element analysis
    Shih Liang Shih
    Orthopaedic Biomechanics Laboratory, Insitute of Biomedical Engineering, National Yang Ming University, Taipei, Taiwan
    J Spinal Disord Tech 25:E140-9. 2012
    ..A finite element analysis to simulate the behavior of lumbar spines implanted with a posterior dynamic neutralization system, Dynesys, under displacement-controlled loading...
  23. ncbi Biomechanical testing of the LCP--how can stability in locked internal fixators be controlled?
    Karl Stoffel
    Department of Orthpaedic Surgery, Kantonspital, St Gallen, Switzerland
    Injury 34:B11-9. 2003
    ..Furthermore, the distance between the plate and the bone ought to be kept small and long plates should be used to provide sufficient axial stiffness...
  24. ncbi Subsidence of stand-alone cervical carbon fiber cages
    Ronald H M A Bartels
    Department of Neurosurgery, Radboud University, Nijmegen Medical Centre, Nijmegen, The Netherlands
    Neurosurgery 58:502-8; discussion 502-8. 2006
    ..To investigate the number of subsidences of inserted cervical carbon fiber cages and to define predictive factors for subsidence...
  25. ncbi Internal fixation of proximal humerus fractures using the Polarus intramedullary nail
    K Kazakos
    Orthopedic Clinic, Democritus University of Thrace, Dragana, Alexandroupoli, B O 68100, Greece
    Arch Orthop Trauma Surg 127:503-8. 2007
    ..In this study, we evaluate the results of the Polarus nail, in order to constitute to the controversial problem of the treatment of proximal humerus fractures...
  26. ncbi Treatment of unstable thoracolumbar and lumbar spine injuries using Cotrel-Dubousset instrumentation
    P G Katonis
    University Hospital of Heraklion, Crete, Greece
    Spine (Phila Pa 1976) 24:2352-7. 1999
    ....
  27. pmc Rationale, principles and experimental evaluation of the concept of soft stabilization
    Robert C Mulholland
    Centre for Spinal Studies and Surgery, Queen s Medical Center, University Hospital Nottingham, UK
    Eur Spine J 11:S198-205. 2002
    ..This design produces maximal unloading of the disc, whilst allowing a restricted range of movement, which serves the important purpose of allowing the patient to maintain sagittal balance in varying postures...
  28. pmc Design of the PROCON trial: a prospective, randomized multi-center study comparing cervical anterior discectomy without fusion, with fusion or with arthroplasty
    Ronald H M A Bartels
    Department of Neurosurgery, Radboud University Nijmegen Medical Centre, NL 6500 HB Nijmegen, The Netherlands
    BMC Musculoskelet Disord 7:85. 2006
    ..Description of rationale and design of PROCON trial and discussion of its strengths and limitations...
  29. ncbi Comparative evaluation of microdiscectomy only, autograft fusion, polymethylmethacrylate interposition, and threaded titanium cage fusion for treatment of single-level cervical disc disease: a prospective randomized study in 125 patients
    Christian B Bärlocher
    Department of Neurosurgery, Inselspital, University of Berne, Switzerland
    Neurosurg Focus 12:E4. 2002
    ....
  30. ncbi Harrington and Cotrel-Dubousset instrumentation in adolescent idiopathic scoliosis. Long-term functional and radiographic outcomes
    Ilkka Helenius
    ORTON Orthopaedic Hospital, Invalid Foundation, Tenholantie 10, Helsinki FIN 00280, Finland
    J Bone Joint Surg Am 85:2303-9. 2003
    ..We are not aware of any long-term studies comparing Harrington and Cotrel-Dubousset instrumentation...
  31. ncbi Quantification of cancellous bone-compaction due to DHS Blade insertion and influence upon cut-out resistance
    Markus Windolf
    AO Research Institute, AO Foundation, Clavadelerstrasse 8, 7270 Davos, Switzerland
    Clin Biomech (Bristol, Avon) 24:53-8. 2009
    ..This in vitro study quantified the compaction in the femoral head due to insertion of a dynamic hip screw-blade with and without predrilling and investigated the resulting implant anchorage under cyclic loading...
  32. ncbi Minimally invasive anterior lumbar interbody fusion followed by percutaneous pedicle screw fixation for isthmic spondylolisthesis: minimum 5-year follow-up
    Jin Sung Kim
    Department of Neurosurgery, Wooridul Spine Hospital, 47 4 Chungdam dong, Gangnam Gu, Seoul, Korea
    Spine J 10:404-9. 2010
    ..We previously reported the preliminary results of minimally invasive anterior lumbar interbody fusion (mini-ALIF) with percutaneous pedicle screw fixation (PPF) in 2004...
  33. ncbi The use of muscle flaps in the salvage of infected exposed implants for internal fixation
    K J Tan
    University Orthopaedics, Hand and Reconstructive Microsurgery Cluster, National University Hospital, Young Loo Lin School of Medicine, National University of Singapore, National University Health System, 5 Lower Kent Ridge Road, Singapore
    J Bone Joint Surg Br 92:401-5. 2010
    ..The use of antibiotic beads, vacuum-assisted closure and dressing, the surgical site, the type of flap performed and the time from primary surgery to flap cover were not predictive of outcome...
  34. ncbi Subsidence of the wing titanium cage after anterior cervical interbody fusion: 2-year follow-up study
    Kirsten Schmieder
    Department of Neurosurgery, Ruhr University Bochum, Germany
    J Neurosurg Spine 4:447-53. 2006
    ..The aim of this prospective study was to evaluate subsidence and total segmental height after implantation of a newly designed Wing titanium cage. Furthermore, alignment of the entire cervical spine was analyzed 2 years after surgery...
  35. ncbi Outcomes of osteochondral lesions of the knee repaired with a bioabsorbable device
    Joshua S Dines
    Sports Medicine Service, Hospital for Special Surgery, New York, New York, USA
    Arthroscopy 24:62-8. 2008
    ..We sought to evaluate the functional and radiographic outcome of osteochondral lesions involving the femoral condyle that were arthroscopically repaired via a bioabsorbable fixation device made of self-reinforced poly-L-lactic acid...
  36. ncbi Adjacent segment disease after lumbar or lumbosacral fusion: review of the literature
    Paul Park
    Department of Neurosurgery, University of Michigan Health System, Ann Arbor, MI 48109 0338, USA
    Spine (Phila Pa 1976) 29:1938-44. 2004
    ..Review of the literature...
  37. ncbi Subsidence after anterior cervical inter-body fusion. A randomized prospective clinical trial
    Erich Kast
    Department of Neurosurgery, Kantonsspital Winterthur, Brauerstrasse 15, CH 8401, Winterthur, Switzerland
    Neurosurg Rev 32:207-14; discussion 214. 2009
    ..Although there was no significant difference in a short-term clinical result between the two treatment groups, we recommend the use of cages which preserve the determined segmental height and lordosis...
  38. ncbi Minimally invasive dorsal percutaneous spondylodesis for the treatment of adult pyogenic spondylodiscitis
    Martin H Deininger
    Department of General Neurosurgery, University of Freiburg Medical School, 79106 Freiburg, Germany
    Acta Neurochir (Wien) 151:1451-7. 2009
    ..If surgical intervention is required, a combined anterior and posterior approach for debridement and fusion with autologous bone graft or titanium mesh cage is usually performed...
  39. pmc Diastasis of the pubic symphysis peculiar to horse riders: modern aspects of pelvic pommel injuries
    K J Mulhall
    St Nessan s Regional Orthopaedic Hospital, Croom, Co Limerick, Ireland
    Br J Sports Med 36:74-5. 2002
    ..Three cases in horse riders are here described, emphasising the appropriate modern investigation, including computed tomography, and orthopaedic and urological management...
  40. ncbi [The minimally invasive stabilization of the dorsal pelvic ring with the transiliacal internal fixator (TIFI)--surgical technique and first clinical findings]
    B Füchtmeier
    Abteilung fur Unfallchirurgie, Klinikum der Universitat Regensburg
    Unfallchirurg 107:1142-51. 2004
    ..Closed reduction and minimally invasive insertion technique are possible. The implant leads to sufficient biomechanical stability but there is a very low intraoperative risk of neuro-vascular lesion...
  41. ncbi Anterior/posterior spinal instrumentation versus posterior instrumentation alone for the treatment of adolescent idiopathic scoliotic curves more than 90 degrees
    Matthew B Dobbs
    Department of Orthopaedic Surgery, Washington University School of Medicine, St Louis, MO 63110, USA
    Spine (Phila Pa 1976) 31:2386-91. 2006
    ..A retrospective review of patients with adolescent idiopathic scoliosis (AIS), with curves more than 90 degrees treated with either a combined anterior/posterior spinal fusion or a posterior spinal fusion alone...
  42. ncbi Accuracy and efficacy of thoracic pedicle screws in curves more than 90 degrees
    Timothy R Kuklo
    Orthopaedic Surgery Service, Walter Reed Army Medical Center, Washington, DC, USA
    Spine (Phila Pa 1976) 30:222-6. 2005
    ..Retrospective study of large-magnitude thoracic curves (> or =90 degrees ) treated with pedicle screw constructs...
  43. ncbi A prospective, randomized trial comparing the limited contact dynamic compression plate with the point contact fixator for forearm fractures
    Frankie Leung
    Department of Orthopaedic Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong
    J Bone Joint Surg Am 85:2343-8. 2003
    ..We performed a prospective, randomized trial in which the limited contact dynamic compression plate (LC-DCP) was compared with the Point Contact Fixator (PC-Fix) for the treatment of forearm fractures at one center...
  44. ncbi Minimally invasive treatment for Neer IIb distal clavicle fractures with titanium cable
    Yang Li
    Department of Orthopaedic Surgery, Kunming General Hospital of the PLA, Kunming, People s Republic of China
    J Trauma 71:E37-40. 2011
    ..Surgical treatment using various implants such as intramedullary wires, screws, and plates has been described in the literature with satisfactory results...
  45. ncbi Backgrounds of the technology of internal fixators
    Stephan M Perren
    AO Research Institute, Davos, Switzerland
    Injury 34:B1-3. 2003
  46. pmc Subsidence of stand-alone cervical cages in anterior interbody fusion: warning
    Erol Gercek
    McGill University, Montreal, Canada
    Eur Spine J 12:513-6. 2003
    ..At 15 months' follow-up, her cage was broken. Our preliminary results, so far limited in number, represent a serious warning to the proponents of stand-alone cervical cages..
  47. ncbi The use of hook plate in type III and V acromio-clavicular Rockwood dislocations: clinical and radiological midterm results and MRI evaluation in 42 patients
    Alexander Di Francesco
    Orthopaedic and Trauma Unit, Hospital S Salvatore, L Aquila, Italy
    Injury 43:147-52. 2012
    ..The aim of this study was to evaluate the midterm clinical results and magnetic resonance imaging (MRI) features of coraco-clavicular ligaments 18 months after an AC dislocation treated with an AC Dreithaler hook plate...
  48. ncbi Comparative fatigue strengths and stabilities of metacarpal internal fixation techniques
    K K Firoozbakhsh
    Department of Orthopaedics and Rehabilitation, School of Medicine, University of New Mexico, Albuquerque 87131 5296
    J Hand Surg Am 18:1059-68. 1993
    ..6 times), and axial loading (2.5 times) than the second strongest fixation, two dorsal lag screws. Its initial rigidity was significantly higher in axial loading (1.5 times) but was not statistically different in bending and torsion...
  49. ncbi The LCP-concept in the operative treatment of distal humerus fractures--biological, biomechanical and surgical aspects
    Jan Korner
    AO Research Institute, Davos, Switzerland
    Injury 34:B20-30. 2003
    ..LCPs might be of substantial advantage in patients with diminished bone mineral quality or in the presence of metaphyseal comminution...
  50. ncbi Metalwork removal in potential army recruits. Evidence-based changes to entry criteria
    M Townend
    J R Army Med Corps 151:2-4. 2005
    ..If a problem arose then removal could be indicated at that time. No studies or papers in support of this policy were found. No evidence was found to support the current British Army policy, which is now being altered...
  51. ncbi New biological method of internal fixation of the femur
    M Mitkovic
    Orthopaedics and Traumatology Clinic, Faculty of Medicine, University of Nis
    Acta Chir Iugosl 52:113-6. 2005
    ..7-9 months) with big amount of periosteal callus formation. There were no complications in all patients seen. It can be concluded that this method and device meet biological and biomechanical requirements for safe fracture treatment...
  52. ncbi Mechanical comparison in cadaver specimens of three different 90-degree double-plate osteosyntheses for simulated C2-type distal humerus fractures with varying bone densities
    Ivo Schuster
    Department of Orthopaedics and Trauma Surgery, University of Freiburg, Freiburg, Germany
    J Orthop Trauma 22:113-20. 2008
    ....
  53. ncbi Mandibular distraction osteogenesis in Pierre Robin sequence: application of a new internal single-stage resorbable device
    Fernando D Burstein
    Center for Craniofacial Disorders, Children s Healthcare of Atlanta, and the Division of Plastic and Reconstructive Surgery, Emory University, Atlanta, GA, USA
    Plast Reconstr Surg 115:61-7; discussion 68-9. 2005
    ..The final tracheostomy status in one patient will be determined after surgery for gastroesophageal reflux. There were no major complications and no structural device failures...
  54. ncbi Characteristics of pedicle screw loading. Effect of surgical technique on intravertebral and intrapedicular bending moments
    T O McKinley
    Department of Orthopaedic Surgery, University of California, Davis, Sacramento, USA
    Spine (Phila Pa 1976) 24:18-24, discussion 25. 1999
    ..Screws left short of full insertion, placed off center in the sagittal plane of the pedicle, or less than 40 mm long developed increased intrapedicular bending moments...
  55. pmc A single posterior approach for multilevel modified vertebral column resection in adults with severe rigid congenital kyphoscoliosis: a retrospective study of 13 cases
    Yan Wang
    Department of Orthopaedics, Chinese PLA General Hospital, Fuxing Road 28, Beijing 100853, China
    Eur Spine J 17:361-72. 2008
    ..MVCR technique through a single posterior approach is an effective procedure for the surgical treatment of severe congenital rigid kyphoscoliosis in adults...
  56. ncbi A review of locking compression plate biomechanics and their advantages as internal fixators in fracture healing
    Danielle L Miller
    Department of Biomedical Engineering, Wright State University, Dayton, OH, USA
    Clin Biomech (Bristol, Avon) 22:1049-62. 2007
    ..a review of the literature related to the biomechanics of locking compression plates and their use as internal fixators in fracture healing...
  57. pmc Anterior thoracoscopic surgery followed by posterior instrumentation and fusion in spinal deformity
    T Niemeyer
    Centre for Scoliosis and Spinal Surgery, Neustadt Hospital, Germany
    Eur Spine J 9:499-504. 2000
    ..Thoracoscopic anterior surgery appears a safe and effective technique for the treatment of paediatric and adolescent spinal deformity. A randomised controlled trial, comparing open with thoracoscopic methods, is required...
  58. ncbi Mechanical testing of bioresorbable implants for use in metacarpal fracture fixation
    K J Bozic
    Orthopaedic Biomechanics Laboratory, Beth Israel Deaconess Medical Center, Boston, MA, USA
    J Hand Surg Am 26:755-61. 2001
    ..Further research is necessary to determine whether this level of fixation is adequate to stabilize unstable metacarpal fractures...
  59. ncbi A biomechanical assessment of thoracic spine stapling
    Christian M Puttlitz
    Department of Mechanical Engineering, CO State University, Fort Collins, CO 80523 1374, USA
    Spine (Phila Pa 1976) 32:766-71. 2007
    ..An in vitro immature bovine study of thoracic spine fixation using shape memory alloy for minimally invasive adolescent scoliosis treatment...
  60. ncbi Cortical screw pullout strength and effective shear stress in synthetic third generation composite femurs
    Radovan Zdero
    Martin Orthopaedic Biomechanics Lab, St Michael s Hospital, Toronto, ON, Canada
    J Biomech Eng 129:289-93. 2007
    ..The purpose of this investigation was to measure bone screw pullout forces in composite femurs and determine whether results are comparable to cadaver data from previous literature...
  61. ncbi Comparison between preoperative and postoperative three-dimensional reconstructions of idiopathic scoliosis with the Cotrel-Dubousset procedure
    H Labelle
    Pediatric Research Center, , University of Montreal, Quebec, Canada
    Spine (Phila Pa 1976) 20:2487-92. 1995
    ..CONCLUSIONS. The Cotrel-Dubousset instrumentation and procedure are effective in producing three-dimensional improvement of the thoracic spine by en bloc relocation of the instrumented spine rather than by vertebral axial derotation...
  62. ncbi Good outcome and restoration of lordosis after anterior lumbar interbody fusion with additional posterior fixation
    Paul W Pavlov
    Department of Orthopaedics, Sint Maartenskliniek, Nijmegen, The Netherlands
    Spine (Phila Pa 1976) 29:1893-9; discussion 1900. 2004
    ....
  63. ncbi Is a helical shaped implant a superior alternative to the Dynamic Hip Screw for unstable femoral neck fractures? A biomechanical investigation
    Markus Windolf
    AO Research Institute, AO Foundation, Clavadelerstrasse 8, 7270 Davos, Switzerland
    Clin Biomech (Bristol, Avon) 24:59-64. 2009
    ..However, cut-out occurs in 1-6% of all cases. This study compared the biomechanical performance of a helical shaped implant (DHS-Blade) to the Dynamic Hip Screw in an unstable femoral neck fracture model...
  64. ncbi Biomechanical analysis of lumbosacral fixation
    P A Glazer
    Department of Orthopaedic Surgery, University of California, San Francisco, USA
    Spine (Phila Pa 1976) 21:1211-22. 1996
    ..Rigidity of fixation at the lumbosacral junction may be enhanced by use of appropriate anterior interbody fusion techniques...
  65. ncbi Biomechanical testing of the lumbosacral spine
    J P Kostuik
    Department of Orthopaedic Surgery, Johns Hopkins University, School of Medicine, Baltimore, Maryland, USA
    Spine (Phila Pa 1976) 23:1721-8. 1998
    ..The addition of L5 fixation in addition to sacral fixation significantly decreases rotational stresses and is recommended as well...
  66. ncbi Circumferential lumbar spinal fusion with Brantigan cage versus posterolateral fusion with titanium Cotrel-Dubousset instrumentation: a prospective, randomized clinical study of 146 patients
    Finn B Christensen
    Spine Section, Department of Orthopedic Surgery, University Hospital of Aarhus, Denmark
    Spine (Phila Pa 1976) 27:2674-83. 2002
    ..A prospective randomized clinical study with a 2-year follow-up period was conducted...
  67. ncbi Long-term outcome in neuromuscular scoliosis fused only to lumbar 5
    Richard E McCall
    The Shriners Hospitals for Children, Shreveport, LA 71103, USA
    Spine (Phila Pa 1976) 30:2056-60. 2005
    ..Outcomes are retrospectively compared for patients with neuromuscular scoliosis after instrumented surgery and fusion to the pelvis versus lumbar 5 fusion alone...
  68. ncbi [Biomechanics of scoliosis]
    Andrzej Nowakowski
    Oddzial Chirurgii Kregosłupa, Ortopedyczno Rehabilitacyjny Szpital Kliniczny nr 4 im Wiktora Degi, Akademia Medyczna im Karola Marcinkowskiego w Poznaniu
    Chir Narzadow Ruchu Ortop Pol 69:341-7. 2004
    ....
  69. ncbi Anterior correction of cervical spine lordosis using an adjustable depth tap: technical note
    Andrew Jea
    Department of Neurological Surgery, University of Miami School of Medicine, Miami, FL 33136, USA
    J Spinal Disord Tech 18:178-81. 2005
    ....
  70. ncbi Biomechanical comparison of posterior lumbar interbody fusion and transforaminal lumbar interbody fusion performed at 1 and 2 levels
    Christopher P Ames
    Department of Neurological Surgery, University of California, San Francisco, CA 94143 0112, USA
    Spine (Phila Pa 1976) 30:E562-6. 2005
    ..Biomechanical laboratory study of human cadaveric spines...
  71. ncbi Anterior-only stabilization of three-column thoracolumbar injuries
    Rick C Sasso
    Indiana Spine Group, Indianapolis, Indiana 46260, USA
    J Spinal Disord Tech 18:S7-14. 2005
    ..This was conducted to evaluate the efficacy of stand-alone anterior decompression and reconstruction of unstable three-column thoracolumbar injuries, utilizing current-generation anterior spinal instrumentation...
  72. ncbi Scoliosis correction in an adolescent with a rigid spine syndrome: case report
    Alexandre Arkader
    Department of Orthopaedic Surgery, The Children s Hospital of Philadelphia, Philadelphia, PA 19104 4399, USA
    Spine (Phila Pa 1976) 30:E623-8. 2005
    ..Details of presentation and approach to the treatment of scoliosis in a case of a Rigid Spine Syndrome (RSS)...
  73. pmc Comparison of the biomechanical stability of dense cancellous allograft with tricortical iliac autograft and fibular allograft for cervical interbody fusion
    Stephen I Ryu
    Department of Neurosurgery, Stanford University, Stanford, CA, USA
    Eur Spine J 15:1339-45. 2006
    ..Anterior cervical plating significantly increased biomechanical stability in all modes...
  74. ncbi Anterior debridement and fusion followed by posterior pedicle screw fixation in pyogenic spondylodiscitis: autologous iliac bone strut versus cage
    Yong Hun Pee
    Department of Neurosurgery, Wooridul Spine Hospital, Seoul, Korea
    J Neurosurg Spine 8:405-12. 2008
    ..The authors present their experience of anterior fusion with 3 types of cages followed by posterior pedicle screw fixation. They also compare their results with the use of autologous iliac bone strut...
  75. ncbi Percutaneous axial lumbar interbody fusion (AxiaLIF) of the L5-S1 segment: initial clinical and radiographic experience
    H E Aryan
    Department of Neurosurgery, University of California San Francisco, CA, USA
    Minim Invasive Neurosurg 51:225-30. 2008
    ..We reviewed our experience with a novel minimally invasive technique for L5-S1 interbody fusion that exploits the presacral space and its relative dearth of critical structures...
  76. ncbi Anterior spinal fusion versus posterior spinal fusion for moderate lumbar/thoracolumbar adolescent idiopathic scoliosis: a prospective study
    Yipeng Wang
    Department of Orthopedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
    Spine (Phila Pa 1976) 33:2166-72. 2008
    ..A prospective study...
  77. ncbi Intermediate screws in short segment pedicular fixation for thoracic and lumbar fractures: a biomechanical study
    Yoram Anekstein
    Department of Orthopaedic Surgery, Assaf Harofe Medical Center, Zerifin 70300, Israel
    J Spinal Disord Tech 20:72-7. 2007
    ..003), and torsion (P=0.006), signifying a decrease in flexibility. The addition of intermediate screws at the level of a burst fracture significantly increases the stiffness of a short segment pedicular fixation...
  78. ncbi PLIF with a titanium cage and excised facet joint bone for degenerative spondylolisthesis--in augmentation with a pedicle screw
    Koichiro Okuyama
    Department of Orthopedic Surgery, Akita Rosai Hospital, Akita 018 5604, Japan
    J Spinal Disord Tech 20:53-9. 2007
    ..To determine the validity of posterior lumbar interbody fusion (PLIF) using a titanium cage filled with excised facet joint bone and a pedicle screw for degenerative spondylolisthesis...
  79. ncbi Biomechanical evaluation of a new total posterior-element replacement system
    Hans Joachim Wilke
    Institute of Orthopaedic Research and Biomechanics, University of Ulm, Ulm, Germany
    Spine (Phila Pa 1976) 31:2790-6; discussion 2797. 2006
    ..In vitro study to characterize the flexibility of a new total posterior-element system when instrumented to L4-L5 segments...
  80. ncbi Biomechanical and clinical evaluation of a novel technique for surgical repair of spondylolysis in adolescents
    James A Ulibarri
    Department of Orthopaedics and Rehabilitation, University of Wisconsin, Madison, WI 53792, USA
    Spine (Phila Pa 1976) 31:2067-72. 2006
    ..A biomechanical comparison of a novel spondylolysis repair technique method to established spondylolysis repair constructs accompanied by a case series of 5 adolescent patients with spondylolysis treated with this technique...
  81. pmc Surgical treatment of spondylodiscitis in the cervical spine: a minimum 2-year follow-up
    Christoph E Heyde
    Department of Orthopedics and Spinal Surgery, Zentralklinik Bad Berka, Bad Berka, Germany
    Eur Spine J 15:1380-7. 2006
    ..Residual neurological deficits persisted in three of eight cases. The results indicate that spondylodiscitis in cervical spine should be treated early and aggressive to avoid local and systemic complications...
  82. pmc Anterior C2-C3 fixation with screws: proposal of a new technique and comparative mechanical assays
    Helton L A Defino
    Faculty of Medicine of Ribeirao Preto, Dept of Biomechanics, Medicine and Reahabilitation of the Locomotor Apparatus, University of Sao Paulo, Ribeirao Preto, Brazil
    Eur Spine J 15:1159-64. 2006
    ..The results of the mechanical tests performed showed that fixation of the C2-C3 segment only with screws was not inferior from a mechanical point of view when compared to fixation with H plates of the Orozco type...
  83. pmc Anterior dual rod instrumentation in idiopathic thoracic scoliosis
    Ulf R Liljenqvist
    Department of Orthopaedic Surgery, University Hospital Munster, Munster, Germany
    Eur Spine J 15:1118-27. 2006
    ..It offers primary stability without the need of postoperative bracing. Dual screw dual rod instrumentation offers the advantages of a high screw pullout resistance, an increased overall stability and satisfactory sagittal plane control...
  84. pmc Harvesting local cylinder autograft from adjacent vertebral body for anterior lumbar interbody fusion: surgical technique, operative feasibility and preliminary clinical results
    Vincent Arlet
    Department of Orthopedic Surgery, University of Virginia, Charlottesville, VA, USA
    Eur Spine J 15:1352-9. 2006
    ..Filling of the void defect with a beta-tricalcium phosphate plug does not preclude the use of posterior pedicle screw stabilization...
  85. ncbi Biomechanical assessment of anterior lumbar interbody fusion with an anterior lumbosacral fixation screw-plate: comparison to stand-alone anterior lumbar interbody fusion and anterior lumbar interbody fusion with pedicle screws in an unstable human cadave
    Mark Gerber
    Spinal Biomechanics Research Laboratory, Barrow Neurological Institute, Phoenix, AZ 85013, USA
    Spine (Phila Pa 1976) 31:762-8. 2006
    ..Human lumbosacral cadaveric specimens were tested in an in vitro biomechanical flexibility experiment using physiologic loads in 5 sequential conditions...
  86. ncbi Minimally invasive transmuscular pedicle screw fixation of the thoracic and lumbar spine
    Florian Ringel
    Department of Neurosurgery, University of Bonn, Bonn, Germany
    Neurosurgery 59:ONS361-6; discussion ONS366-7. 2006
    ..This study assessed the feasibility and safety of percutaneous posterior pedicle screw fixation for instabilities of the thoracic and lumbar spine, using standard instruments designed for the open approach and fluoroscopy...
  87. ncbi Axial cyclic behavior of the bone-screw interface
    Serkan Inceoglu
    Spine Research Laboratory, W31, The Cleveland Clinic Spine Institute, The Cleveland Clinic Foundation, 9500 Euclid Avenue, OH 44195, USA
    Med Eng Phys 28:888-93. 2006
    ..Moreover, the cycling of the pedicle screws in axial direction within a pre-yield region showed an unusual hysteresis curve. Further studies are needed for a better understanding of the mechanics of the screw-bone interface...
  88. ncbi Pedicle and spinal canal parameters of the lower thoracic and lumbar vertebrae in the achondroplast population
    Umasuthan Srikumaran
    Departments of Orthopaedics Surgery, Johns Hopkins University, Baltimore, MD 21224 2780, USA
    Spine (Phila Pa 1976) 32:2423-31. 2007
    ..Retrospective morphometric population study...
  89. ncbi Torsional rigidity of scoliosis constructs
    K B Wood
    Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, Minnesota 55455, USA
    Spine (Phila Pa 1976) 25:1893-8. 2000
    ..CONCLUSIONS: With pedicle screws as distal anchors in scoliosis constructs, cross-linking with one or two devices adds very little additional rotational stiffness and may be unnecessary in many cases...
  90. ncbi Posterior hemivertebra resection with transpedicular instrumentation: early correction in children aged 1 to 6 years
    Michael Ruf
    Department of Orthopedics and Traumatology, Center for Spinal Surgery, Klinikum Karlsbad Langensteinbach, Germany
    Spine (Phila Pa 1976) 28:2132-8. 2003
    ..Retrospective study with clinical evaluation of posterior hemivertebra resection with transpedicular instrumentation in very young children...
  91. ncbi Biomechanics of cervical spine internal fixation
    P X Montesano
    Department of Orthopaedic Surgery, University of California, Davis, Sacramento
    Spine (Phila Pa 1976) 16:S10-6. 1991
    ..This article discusses the biomechanics of odontoid screws, anterior cervical plates, posterior cervical plates, and posterior C1-C2 screw arthrodesis. It is hoped that this information will aid in implant selection...
  92. ncbi Anterior-posterior surgery versus posterior closing wedge osteotomy in posttraumatic kyphosis with neurologic compromised osteoporotic fracture
    Se Il Suk
    Seoul Spine Institute, Inje University Sanggye Paik Hospital, Seoul, Korea
    Spine (Phila Pa 1976) 28:2170-5. 2003
    ..Retrospective study...
  93. ncbi Biomechanical analysis of transpedicular rod systems. A preliminary report
    R M Puno
    Department of Orthopaedic Surgery, University of Louisville, Kentucky
    Spine (Phila Pa 1976) 16:973-80. 1991
    ..Furthermore, it may be contoured to any plane, while retaining stability provided by the clamps and screws...
  94. ncbi The IVBF dual-blade plate and its applications
    S C Rao
    Department of Orthopedic Surgery, West China University of Medical Sciences, Chengdu, Sichuan
    Spine (Phila Pa 1976) 16:S112-9. 1991
    ..There were four cases of pseudarthrosis due to insufficient bone graft technique. Of these, there were three cases of failure of the dual-blade plate...
  95. ncbi Biomechanical analysis of three surgical approaches for lumbar burst fractures using short-segment instrumentation
    G S Gurwitz
    Department of Orthopaedics and Rehabilitation, Vanderbilt University School of Medicine, Nashville, Tennessee
    Spine (Phila Pa 1976) 18:977-82. 1993
    ..abstract truncated at 250 words)..
  96. ncbi The load sharing classification of spine fractures
    T McCormack
    Division of Orthopaedic Surgery, University of Missouri Columbia Medical School
    Spine (Phila Pa 1976) 19:1741-4. 1994
    ....
  97. ncbi The Syracuse I-plate
    J C Bayley
    Department of Orthopedic Surgery, SUNY HSC, Syracuse
    Spine (Phila Pa 1976) 16:S120-4. 1991
    ....
  98. ncbi Hole preparation techniques for transpedicle screws. Effect on pull-out strength from human cadaveric vertebrae
    D C George
    Department of Orthopaedics and Rehabilitation, McClure Musculoskeletal Research Center, University of Vermont College of Medicine, Burlington
    Spine (Phila Pa 1976) 16:181-4. 1991
    ..Although this does not represent a statistically significant difference (P = 0.15), it suggests that damaging the pedicular cortex may weaken pedicle screw fixation...
  99. ncbi Anterior spinal fusion with TSRH instrumentation for scoliosis
    Jianxiong Shen
    Department of Orthopaedic Surgery Peking Union Medical College Hospital, CAMS and PUMC, Beijing 100730
    Chin Med Sci J 18:41-5. 2003
    ..To introduce a new spinal internal fixation system, Texas Scottish Rite Hospital (TSRH), and to investigate its early clinical outcomes...
  100. ncbi Biomechanical analysis of multilevel fixation methods in the lumbar spine
    P A Glazer
    Department of Orthopaedic Surgery, University of California, San Francisco, USA
    Spine (Phila Pa 1976) 22:171-82. 1997
    ..Rigidity of fixation in the lumbar spine may aid in the maintenance of lordosis...
  101. ncbi [Surgical treatment of lumbar spondylolisthesis with cages and transpedical screws]
    Lun Wan
    Department of Orthopedic Surgery, Sichuan Provincial People s Hospital, Chengdu, Sichuan, P R China 610072
    Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 16:120-2. 2002
    ..To observe the effect of threaded titanium cage and transpedical screw for the treatment of lumbar spondylolisthesis...

Research Grants9

  1. Evaluating Reversible Spinal Fixation in Biped Rats
    Charles Henderson; Fiscal Year: 2003
    ..This progressive plan of study will permit evaluation of biological mechanisms thought to link the manipulable lesion (subluxation) with spinal manipulation and the chiropractic clinical experience. ..
  2. Z Joint Changes in Low Back Pain Following Adjusting
    Gregory Cramer; Fiscal Year: 2009
    ..The results of this study will be used to increase understanding of the mechanism of action of lumbar side posture adjusting and side-posture positioning in acute LBP patients. ..
  3. Osteolysis and Implant Wear: Biological, Biomedical Engineering, and Surgical Pri
    Stuart Goodman; Fiscal Year: 2007
    ..unreadable] [unreadable] [unreadable] [unreadable]..
  4. GROWTH PLATE CELLULAR FUNCTION FOLLOWING RADIOTHERAPY
    Timothy Damron; Fiscal Year: 2008
    ..abstract_text> ..
  5. Back pain Outcomes using Longitudinal Data (BOLD)
    Jeffrey G Jarvik; Fiscal Year: 2010
    ....
  6. RAPID MR VS XRAY: RANDOMIZED OUTCOME TRIAL FOR BACK PAIN
    JEFFREY JARVIK; Fiscal Year: 2001
    ..We have a window of opportunity before the rapid MRI becomes widely disseminated and a randomized trial is made impossible by the expectations of both patients and physicians. ..
  7. Development of a Spinal Intervertebral Disc Prosthesis
    GLENN BUTTERMANN; Fiscal Year: 2003
    ..The objective of Phase I is to demonstrate that the device restores normal spine biomechanics (range of motion and stiffness) and is durable in fatigue testing. ..
  8. Infusion of Particles at Implant interfeces
    Stuart Goodman; Fiscal Year: 2006
    ..abstract_text> ..
  9. 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. ..