The Journal of bone and joint surgery. American volume
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J Bone Joint Surg Am · Apr 2011
Randomized Controlled Trial Multicenter StudyProspective, randomized, multicenter Food and Drug Administration investigational device exemption study of the ProDisc-L total disc replacement compared with circumferential arthrodesis for the treatment of two-level lumbar degenerative disc disease: results at twenty-four months.
Disc replacement arthroplasty previously has been shown to be an effective alternative to spine fusion for the treatment of single-level lumbar degenerative disc disease. The purpose of the present study was to determine the twenty-four-month results of a clinical trial of the ProDisc-L total disc replacement as compared with spinal fusion for the treatment of degenerative disc disease at two contiguous vertebral levels from L3 to S1. ⋯ Despite the relatively short duration of follow-up and design limitations, the present study suggests that two-level lumbar disc arthroplasty is an alternative to and offers clinical advantages in terms of pain relief and functional recovery in comparison with arthrodesis. Longer-term follow-up is needed to determine the risks for implant wear and/or degenerative segment changes.
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J Bone Joint Surg Am · Apr 2011
Midterm results of osteochondral lesions of the talar shoulder treated with fresh osteochondral allograft transplantation.
With osteochondral lesions of the talar shoulder, their size, the articular cartilage geometry, and the loss of the medial or lateral articular buttress often preclude treatment with traditional osteochondral autograft techniques. We hypothesized that fresh, large osteochondral allograft transplantation is a viable treatment option for patients with such lesions. ⋯ These midterm results in a small group of patients indicate that structural fresh allograft transplantation can be a successful surgical option in the treatment of large osteochondral defects of the talar shoulder [corrected].
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J Bone Joint Surg Am · Apr 2011
Randomized Controlled Trial Comparative StudyEffect of calcium phosphate bone cement augmentation on volar plate fixation of unstable distal radial fractures in the elderly.
Calcium phosphate bone cement increases the stability of implant-bone constructs in patients with an osteoporotic fracture. The purpose of this randomized study was to determine whether augmentation of volar locking plate fixation with calcium phosphate bone cement has any benefit over volar locking plate fixation alone in patients older than sixty-five years of age who have an unstable distal radial fracture. ⋯ Augmentation of metaphyseal defects with calcium phosphate bone cement after volar locking plate fixation offered no benefit over volar locking plate fixation alone in elderly patients with an unstable distal radial fracture.