Background. The controversy concerning the benefits of unisegmental cervical disc arthroplasty (CDA) over anterior cervical discectomy and fusion (ACDF) is still open because some randomised clinical trial (RTC) comparing ACDF with CDA have been highly inconclusive. Most of these studies mixed disc prosthesis with dissimilar kinematic characteristics. To date, a compilation of the clinical and radiologic outcomes and adverse events of anterior cervical discectomy and fusion (ACDF) compared with a single cervical disc arthroplasty (CDA) design, the
One untested back pain treatment model is to stratify management depending on prognosis (low, medium or high-risk). This 2-arm RCT investigated: (i) overall clinical and cost-effectiveness of stratified primary care (intervention), versus non-stratified current best practice (control); and (ii) whether low-risk patients had non-inferior outcomes, and medium/high-risk groups had superior outcomes. 1573 adults with back pain (+/− radiculopathy) consulting at 10 general practices in England responded to invitations to attend an assessment clinic, at which 851 eligible participants were randomised (intervention n=568; control n=283). Primary outcome using intention-to-treat analysis was the difference in change in the Roland-Morris Disability Questionnaire (RMDQ) score at 12 months. Secondary outcomes included 4-month RMDQ change between arms overall, and at risk-group level at both time-points. The economic evaluation estimated incremental quality-adjusted life years (QALYs) and back pain-related health care costs.Background
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