Y Kotani

Summary

Affiliation: Hokkaido University
Country: Japan

Publications

  1. ncbi request reprint Static and fatigue biomechanical properties of anterior thoracolumbar instrumentation systems. A synthetic testing model
    Y Kotani
    Department of Orthopaedic Surgery, Union Memorial Hospital, Baltimore, Maryland, USA
    Spine (Phila Pa 1976) 24:1406-13. 1999
  2. pmc Impact of deep extensor muscle-preserving approach on clinical outcome of laminoplasty for cervical spondylotic myelopathy: comparative cohort study
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Eur Spine J 21:1536-44. 2012
  3. doi request reprint Spinal cord compression by hematoma in the cervical ligamentum flavum: a case report
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo 060 8638, Japan
    Spine J 12:e18-21. 2012
  4. pmc Mid-term clinical results of minimally invasive decompression and posterolateral fusion with percutaneous pedicle screws versus conventional approach for degenerative spondylolisthesis with spinal stenosis
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kitaku, Sapporo, Japan
    Eur Spine J 21:1171-7. 2012
  5. ncbi request reprint Artificial intervertebral disc replacement using bioactive three-dimensional fabric: design, development, and preliminary animal study
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 27:929-35; discussion 935-6. 2002
  6. ncbi request reprint Two-year observation of artificial intervertebral disc replacement: results after supplemental ultra-high strength bioresorbable spinal stabilization
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kitaku, Sapporo, Japan
    J Neurosurg 100:337-42. 2004
  7. pmc Cervical spine injuries associated with lateral mass and facet joint fractures: new classification and surgical treatment with pedicle screw fixation
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kitaku, 060 8638, Sapporo, Japan
    Eur Spine J 14:69-77. 2005
  8. ncbi request reprint Multidirectional flexibility analysis of cervical artificial disc reconstruction: in vitro human cadaveric spine model
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Neurosurg Spine 2:188-94. 2005
  9. ncbi request reprint Accuracy analysis of pedicle screw placement in posterior scoliosis surgery: comparison between conventional fluoroscopic and computer-assisted technique
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 32:1543-50. 2007
  10. pmc Minimum 2-year outcome of cervical laminoplasty with deep extensor muscle-preserving approach: impact on cervical spine function and quality of life
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kitaku, Sapporo, 060 8638, Japan
    Eur Spine J 18:663-71. 2009

Collaborators

Detail Information

Publications49

  1. ncbi request reprint Static and fatigue biomechanical properties of anterior thoracolumbar instrumentation systems. A synthetic testing model
    Y Kotani
    Department of Orthopaedic Surgery, Union Memorial Hospital, Baltimore, Maryland, USA
    Spine (Phila Pa 1976) 24:1406-13. 1999
    ..A mechanical testing standard for anterior thoracolumbar instrumentation systems was introduced, using a synthetic model. Twelve recent instrumentation systems were tested in static and fatigue modes...
  2. pmc Impact of deep extensor muscle-preserving approach on clinical outcome of laminoplasty for cervical spondylotic myelopathy: comparative cohort study
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Eur Spine J 21:1536-44. 2012
    ..We specifically assessed axial pain, cervical spine function, and quality of life (QOL) with a minimum follow-up period of 3 years...
  3. doi request reprint Spinal cord compression by hematoma in the cervical ligamentum flavum: a case report
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo 060 8638, Japan
    Spine J 12:e18-21. 2012
    ..There have been some reports describing hematoma in the thoracic and lumbar ligamentum flavum, but there have been only three reports of hematoma in the cervical ligamentum flavum...
  4. pmc Mid-term clinical results of minimally invasive decompression and posterolateral fusion with percutaneous pedicle screws versus conventional approach for degenerative spondylolisthesis with spinal stenosis
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kitaku, Sapporo, Japan
    Eur Spine J 21:1171-7. 2012
    ..This study prospectively compared the mid-term clinical outcome of MIS-PLF with those of conventional PLF (open-PLF) focusing on perioperative invasiveness and patients' functional capacity of daily living...
  5. ncbi request reprint Artificial intervertebral disc replacement using bioactive three-dimensional fabric: design, development, and preliminary animal study
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 27:929-35; discussion 935-6. 2002
    ..A new artificial intervertebral disc was developed, and its intrinsic biomechanical properties, bioactivity, and the effectiveness as a total disc replacement were evaluated in vitro and in vivo...
  6. ncbi request reprint Two-year observation of artificial intervertebral disc replacement: results after supplemental ultra-high strength bioresorbable spinal stabilization
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kitaku, Sapporo, Japan
    J Neurosurg 100:337-42. 2004
    ..The biomechanical and histological alterations as well as possible device-related loosening were examined at 2 years postoperatively...
  7. pmc Cervical spine injuries associated with lateral mass and facet joint fractures: new classification and surgical treatment with pedicle screw fixation
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kitaku, 060 8638, Sapporo, Japan
    Eur Spine J 14:69-77. 2005
    ..The initial evaluation of fracture subtypes helps to successfully minimize the stabilized spinal segment...
  8. ncbi request reprint Multidirectional flexibility analysis of cervical artificial disc reconstruction: in vitro human cadaveric spine model
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Neurosurg Spine 2:188-94. 2005
    ..The multidirectional flexibility of replaced and adjacent spinal segments were analyzed using a cadaveric cervical spine model...
  9. ncbi request reprint Accuracy analysis of pedicle screw placement in posterior scoliosis surgery: comparison between conventional fluoroscopic and computer-assisted technique
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 32:1543-50. 2007
    ..The accuracy of pedicle screw placement was evaluated in posterior scoliosis surgeries with or without the use of computer-assisted surgical techniques...
  10. pmc Minimum 2-year outcome of cervical laminoplasty with deep extensor muscle-preserving approach: impact on cervical spine function and quality of life
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kitaku, Sapporo, 060 8638, Japan
    Eur Spine J 18:663-71. 2009
    ....
  11. ncbi request reprint Multidirectional flexibility analysis of anterior and posterior lumbar artificial disc reconstruction: in vitro human cadaveric spine model
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Sapporo 060 8638, Japan
    Eur Spine J 15:1511-20. 2006
    ..The stand-alone lumbar 3DF disc replacement demonstrated biomechanical characteristics nearly equivalent to the intact spinal segments even through anterior or posterior approach in vitro, suggesting an excellent clinical potential...
  12. doi request reprint Neurological recovery from pentaplegia after resection for sacral plasmacytoma presenting with POEMS syndrome
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Neurosurg Spine 10:324-8. 2009
    ..This is the first report describing neurological recovery after surgery for pentaplegia due to POEMS syndrome associated with solitary sacral plasmacytoma...
  13. pmc Neurological recovery after surgical treatment of giant cervical pseudomeningoceles extending to lumbar spine associated with previous brachial plexus injury
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kitaku, Sapporo 060 8638, Japan
    Eur Spine J 19:S206-10. 2010
    ..This serves as the first report describing the significant neurologic recovery after the surgical treatment of giant cervical pseudomeningocele extending to the lumbar spine after previous brachial plexus injury...
  14. ncbi request reprint Improved accuracy of computer-assisted cervical pedicle screw insertion
    Yoshihisa Kotani
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Neurosurg 99:257-63. 2003
    ....
  15. ncbi request reprint Biomechanical evaluation of anterior spinal instrumentation systems for scoliosis: in vitro fatigue simulation
    N Shimamoto
    Department of Orthopaedic Surgery, Hokkaido Graduate University School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 26:2701-8. 2001
    ..A biomechanical study was designed to assess the bone-screw interface fixation strength among five anterior spinal instrumentation systems for scoliosis before and after a fatigue simulation...
  16. ncbi request reprint Bone ingrowth fixation of artificial intervertebral disc consisting of bioceramic-coated three-dimensional fabric
    Masahiko Takahata
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 28:637-44; discussion 644. 2003
    ..The bone-bonding characteristic of the new artificial intervertebral disc consisting of bioceramic-coated three-dimensional fabric was evaluated mechanically and histologically in an in vivo sheep model...
  17. ncbi request reprint The effects of spinal fixation and destabilization on the biomechanical and histologic properties of spinal ligaments. An in vivo study
    Y Kotani
    Department of Orthopaedic Surgery, Hokkaido University School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 23:672-82; discussion 682-3. 1998
    ..The altered biomechanical environment produced by spinal fixation, surgical intervention itself, or nonphysiologic mobilization can affect the ligamentous properties in vivo, possibly serving as the impetus for low back pain...
  18. ncbi request reprint Biomechanical analysis of cervical stabilization systems. An assessment of transpedicular screw fixation in the cervical spine
    Y Kotani
    Orthopaedic Biomechanics Laboratory, Union Memorial Hospital, Baltimore, Maryland
    Spine (Phila Pa 1976) 19:2529-39. 1994
    ..Three-column fixation for the cervical spine using transpedicular screw fixation offers increased stability over that of conventional cervical fixation systems, particularly in multiple level constructs...
  19. ncbi request reprint The effect of spinal destabilization and instrumentation on lumbar intradiscal pressure: an in vitro biomechanical analysis
    B W Cunningham
    Union Memorial Hospital Orthopaedic Biomechanics Laboratory, Baltimore, Maryland 21218, USA
    Spine (Phila Pa 1976) 22:2655-63. 1997
    ..Conditions of high or low disc pressure secondary to spinal instrumentation may serve as the impetus for altered metabolic exchange and predispose operative and adjacent levels to disc pathology...
  20. ncbi request reprint Video-assisted thoracoscopic surgery versus open thoracotomy for anterior thoracic spinal fusion. A comparative radiographic, biomechanical, and histologic analysis in a sheep model
    B W Cunningham
    Union Memorial Hospital Orthopaedic Biomechanics Laboratory, Baltimore, MD, USA
    Spine (Phila Pa 1976) 23:1333-40. 1998
    ..In this in vivo investigation, a sheep model was used to compare the efficacy of a video-assisted thoracoscopic approach and a traditional thoracotomy in promoting a successful interbody spinal arthrodesis...
  21. ncbi request reprint A biomechanical and histological evaluation of a bioresorbable lumbar interbody fusion cage
    Yoshihiro Hojo
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kitaku, Sapporo 060 8638, Japan
    Biomaterials 26:2643-51. 2005
    ..It has been confirmed that the novel bioactive and bioresorbable cages had valuable advantages over existing CFC for use in spinal reconstructive surgery...
  22. ncbi request reprint Complications of pedicle screw fixation in reconstructive surgery of the cervical spine
    K Abumi
    Department of Orthopaedic Surgery, Hokkaido University School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 25:962-9. 2000
    ..Retrospective evaluation of complications in 180 consecutive patients with cervical disorders who had been treated by using pedicle screw fixation systems...
  23. ncbi request reprint The role of spinal instrumentation in augmenting lumbar posterolateral fusion
    Y Kotani
    Orthopaedic Biomechanics Laboratory, Union Memorial Hospital, Baltimore, Maryland, USA
    Spine (Phila Pa 1976) 21:278-87. 1996
    ..This was clearly demonstrated under eccentric loads in a sagittal plane, suggesting that transpedicular screw fixation was able to provide anterior and middle column support and resist eccentric loads...
  24. ncbi request reprint The role of anteromedial foraminotomy and the uncovertebral joints in the stability of the cervical spine. A biomechanical study
    Y Kotani
    Department of Orthopaedic Surgery, Hokkaido University School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 23:1559-65. 1998
    ..This study highlights the clinical assessment of additional segmental instability attributed to destruction of the uncovertebral joints during surgical procedures or by neoplastic lesions...
  25. ncbi request reprint Biomechanical and morphologic evaluation of a three-dimensional fabric sheep artificial intervertebral disc: in vitro and in vivo analysis
    K Kadoya
    Department of Orthopaedic Surgery, Hokkaido University, Graduate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 26:1562-9. 2001
    ..The three-dimensional fabric disc has a potential for clinical application of human intervertebral disc replacement...
  26. ncbi request reprint Biomechanical study on the effect of five different lumbar reconstruction techniques on adjacent-level intradiscal pressure and lamina strain
    Hideki Sudo
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Neurosurg Spine 5:150-5. 2006
    ....
  27. ncbi request reprint Static and dynamic analysis of five anterior instrumentation systems for thoracolumbar scoliosis
    Norimichi Shimamoto
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 28:1678-85. 2003
    ..A nondestructive biomechanical investigation among five anterior spinal instrumentation systems for scoliosis...
  28. ncbi request reprint In vitro biomechanical effects of reconstruction on adjacent motion segment: comparison of aligned/kyphotic posterolateral fusion with aligned posterior lumbar interbody fusion/posterolateral fusion
    Hideki Sudo
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
    J Neurosurg 99:221-8. 2003
    ..In this study the authors compare the biomechanical effects of three different posterior reconstructions on the adjacent motion segment...
  29. ncbi request reprint A biomechanical analysis of metastatic vertebral collapse of the thoracic spine: a sheep model study
    Hibiki Ebihara
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 29:994-9. 2004
    ..This is a biomechanical study using sheep thoracic spine to investigate the probability of mechanical failure of the thoracic spine with various sizes or locations of tumor metastasis...
  30. doi request reprint Minimally invasive surgical treatment for tuberculous spondylodiscitis
    M Ito
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Minim Invasive Neurosurg 52:250-3. 2009
    ....
  31. ncbi request reprint Comparison of novel ultra-high molecular weight polyethylene tape versus conventional metal wire for sublaminar segmental fixation in the treatment of adolescent idiopathic scoliosis
    Masahiko Takahata
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Spinal Disord Tech 20:449-55. 2007
    ..Retrospective study...
  32. doi request reprint Spinal cord compression by ligamentum flavum hematoma in the thoracic spine
    Hideki Sudo
    Department of Advanced Medicine for Spine and Spinal Cord Disorders, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
    Spine (Phila Pa 1976) 34:E942-4. 2009
    ..Case report...
  33. doi request reprint Simultaneous double-rod rotation technique in posterior instrumentation surgery for correction of adolescent idiopathic scoliosis
    Manabu Ito
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita ku, Sapporo, Japan
    J Neurosurg Spine 12:293-300. 2010
    ..This technique is applicable not only to a thoracic single curve but also to double major curves in cases of adolescent idiopathic scoliosis...
  34. ncbi request reprint Clinical outcome of posterolateral endoscopic surgery for pyogenic spondylodiscitis: results of 15 patients with serious comorbid conditions
    Manabu Ito
    Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 32:200-6. 2007
    ..Clinical results of posterolateral endoscopic debridement and irrigation followed by percutaneous drainage for pyogenic spondylodiscitis were analyzed...
  35. ncbi request reprint Vertebral osteonecrosis associated with sarcoidosis. Case report
    Manabu Ito
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Neurosurg Spine 2:222-5. 2005
    ..Because of osteopenia and systemic bone fragility, combined anterior-posterior spinal reconstructive surgery was performed to restabilize the severely damaged spine...
  36. ncbi request reprint Evaluation of hydroxyapatite ceramic vertebral spacers with different porosities and their binding capability to the vertebral body: an experimental study in sheep
    Manabu Ito
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Neurosurg Spine 6:431-7. 2007
    ....
  37. ncbi request reprint Spinal cord compression by multistrand cables after solid posterior atlantoaxial fusion. Report of three cases
    Hideki Sudo
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Neurosurg 97:359-61. 2002
    ..When applying multistrand cables for intersegmental fixation at the atlantoaxial complex, delayed complications related to bowing of the cables is possible...
  38. ncbi request reprint Palliative spinal reconstruction using cervical pedicle screws for metastatic lesions of the spine: a retrospective analysis of 32 cases
    Itaru Oda
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 31:1439-44. 2006
    ..A retrospective study...
  39. pmc Iliac crest reconstruction with a bioactive ceramic spacer
    Manabu Ito
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita 15 Nishi 7 Kita ku, 060 8638, Sapporo, Japan
    Eur Spine J 14:99-102. 2005
    ..There was no abnormal silicon concentration in blood examinations. AWGC iliac spacer appears to be useful in the reconstruction of harvested iliac crest. New bone formation occurs, reducing the defect size...
  40. ncbi request reprint An investigational study on the healing process of anterior spinal arthrodesis using a bioactive ceramic spacer and the change in load-sharing of spinal instrumentation
    Masahiko Takahata
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 30:E195-203. 2005
    ..Ceramic anterior lumbar interbody arthrodesis was performed using an in vivo sheep model. Observations of fusion status and the load-sharing of spinal instrumentation were studied at sequential intervals for 1 year after surgery...
  41. doi request reprint Clinical results and complications of circumferential spinal cord decompression through a single posterior approach for thoracic myelopathy caused by ossification of posterior longitudinal ligament
    Masahiko Takahata
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 33:1199-208. 2008
    ..A retrospective review...
  42. ncbi request reprint A retrospective radiographic analysis of subaxial sagittal alignment after posterior C1-C2 fusion
    Hisashi Yoshimoto
    Department of Orthopaedic Surgery, Hokkaido University Gradate School of Medicine, Sapporo, Japan
    Spine (Phila Pa 1976) 29:175-81. 2004
    ..Subaxial sagittal alignment following atlantoaxial (A-A) posterior fusion was investigated retrospectively in patients with A-A subluxation...
  43. ncbi request reprint The Mitek Mini G2 suture anchor: biomechanical analysis of use in the hand
    B D Buch
    Department of Orthopaedic Surgery, Union Memorial Hospital, Baltimore, MD 21218, USA
    J Hand Surg Am 20:877-81. 1995
    ..We conclude that the Mitek Mini G2 suture anchor possesses sufficient pullout strength for tendon and ligament fixation in the hand, including the distal phalanx...
  44. ncbi request reprint Effects of aging and spinal degeneration on mechanical properties of lumbar supraspinous and interspinous ligaments
    Takahiro Iida
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kitaku, Sapporo, 060 8638, Japan
    Spine J 2:95-100. 2002
    ..The effects of aging and spinal degeneration on the mechanical properties of spinal ligaments are still unknown, although there have been several studies demonstrating those of normal spinal ligaments...
  45. ncbi request reprint Diagnostic accuracy of magnetic resonance imaging for detecting posterior ligamentous complex injury associated with thoracic and lumbar fractures
    Hitoshi Haba
    Department of Orthopaedic Surgery, Hokkaido University, Graduate School of Medicine, Kita ku, Sapporo, Japan
    J Neurosurg 99:20-6. 2003
    ....
  46. ncbi request reprint Effects of local administration of vascular endothelial growth factor on mechanical characteristics of the semitendinosus tendon graft after anterior cruciate ligament reconstruction in sheep
    Toshikazu Yoshikawa
    Department of Sports Medicine, Hokkaido University School of Medicine, Kita 15 Nishi 7 Kita ku, Sapporo, 060 8638, Japan
    Am J Sports Med 34:1918-25. 2006
    ..Vascular endothelial growth factor (VEGF) is a potent mediator of angiogenesis...
  47. ncbi request reprint Long-term follow up of surgical outcomes in patients with cervical disorders undergoing hemodialysis
    Hideki Sudo
    Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
    J Neurosurg Spine 5:313-9. 2006
    ..The objective of this study was to evaluate the long-term follow up and clinical results after surgical treatment of cervical disorders in patients undergoing hemodialysis...
  48. ncbi request reprint Complications related to hydroxyapatite vertebral spacer in anterior cervical spine surgery
    Manabu Ito
    Bibai Rosai Hospital
    Spine (Phila Pa 1976) 27:428-31. 2002
    ..Compression of the spinal cord by broken fragments of hydroxyapatite spacer as well as its surrounding radiolucent clear zone were observed in seven patients...
  49. ncbi request reprint Migration of intracranial hemostatic clip into the lumbar spinal canal causing sacral radiculopathy: a case report
    Keigo Yasui
    Department of Orthopedic Surgery, Kutchan Kosei Hospital, Hokkaido, Japan
    Spine (Phila Pa 1976) 28:E511-4. 2003
    ..A case report...