Journal of spinal disorders & techniques
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J Spinal Disord Tech · Oct 2011
The facet joint loading profile of a cervical intervertebral disc replacement incorporating a novel saddle-shaped articulation.
Biomechanical study. ⋯ Biomechanical testing in an ovine model demonstrated no significant difference in measured facet pressures and forces between an intact native cervical disc specimen and a cervical intervertebral disc prosthesis using a saddle-shaped articulation. Peak and mean pressures were not demonstrated to be significantly different between the implanted and intact disc conditions. Implantation of the prosthesis resulted in a significant reduction of contact area under extension moments.
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Retrospective, consecutive patient series. ⋯ Our clinical findings indicate that lateral mass fixation can be used safely with minimal complications and low rate of morbidity for cervical myelopathy treatment.
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J Spinal Disord Tech · Aug 2011
Multilevel lumbar spinal stenosis decompression: midterm outcome using a modified hinge osteotomy technique.
A prospective cohort study was carried out looking at the functional outcome and post procedure translational segmental instability after multi-level lumbar decompression using a hinge osteotomy technique. ⋯ Decompression of multi-level lumbar spine stenosis using the unilateral approach with the hinge osteotomy technique is a safe approach for multi-level stenosis, with good outcome and no evidence of significant segmental translational spinal instability.
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J Spinal Disord Tech · Aug 2011
Randomized Controlled Trial Comparative StudySagittal alignment comparison of Bryan disc arthroplasty with ProDisc-C arthroplasty: a prospective, randomized controlled clinical trial.
A prospective, randomized study of the radiographic outcomes in patients undergoing single-level cervical arthroplasty with Bryan disc and ProDisc-C prosthesis. ⋯ Bryan disc arthroplasty with modified techniques can maintain the lordosis of FSU, whereas ProDisc-C arthroplasty can restore the lordosis of FSU. For the patients with preoperative FSU kyphosis, ProDisc-C arthroplasty may be a better choice to restore the lordosis.
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J Spinal Disord Tech · Aug 2011
Bacteriologic culture of excised intervertebral disc from immunocompetent patients undergoing single level primary lumbar microdiscectomy.
A consecutive case series from a single center of patients undergoing primary microdiscectomy for lumbar herniated nucleus pulposus (HNP) who received microbiologic laboratory culture of excised disc material. ⋯ Diagnostic level of evidence III.