Spine
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Review Multicenter Study Clinical Trial
Effect of type II odontoid fracture nonunion on outcome among elderly patients treated without surgery: based on the AOSpine North America geriatric odontoid fracture study.
Subgroup analysis of a prospective multicenter study. ⋯ 2.
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Randomized Controlled Trial Multicenter Study
Clinical outcomes with selectively constrained SECURE-C cervical disc arthroplasty: two-year results from a prospective, randomized, controlled, multicenter investigational device exemption study.
Prospective, multicenter, randomized, and controlled Investigational Device Exemption clinical trial. ⋯ 1.
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Multicenter Study Clinical Trial
Anterior versus posterior surgical approaches to treat cervical spondylotic myelopathy: outcomes of the prospective multicenter AOSpine North America CSM study in 264 patients.
A prospective observational multicenter study. ⋯ 3.
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Randomized Controlled Trial Multicenter Study
rhBMP-2 for posterolateral instrumented lumbar fusion: a multicenter prospective randomized controlled trial.
Multicenter randomized controlled trial. ⋯ The use of rhBMP-2 for instrumented posterolateral lumbar surgery significantly improves the chances of radiographical fusion compared with the use of autograft. However, there is no associated improvement in clinical outcome within a 4-year follow-up period. These results suggest that use of rhBMP-2 should be considered in cases where lumbar arthrodesis is of primary concern.
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Multicenter Study
No relationship between body mass index and changes in pain and disability after exercise rehabilitation for patients with mild to moderate chronic low back pain.
A retrospective multicenter study. ⋯ There was no significant relationship between BMI and self-reported pain and disability in cLBP participants. BMI was not a predictor of exercise-induced changes in pain and disability. The reliance on BMI as a sole measurement of obesity in cLBP research may be unwarranted.