Spine
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An in vitro study of the wear rates of the CHARITÉ lumbar total disc replacement (TDR). ⋯ The addition of anterior-posterior shear to wear testing inputs of the CHARITÉ lumbar TDR increases the wear rate significantly, which is in direct contrast to the previous 5-DOF testing on the ProDisc. This study highlights the importance of clinically relevant testing regimens, and that test inputs may be different for dissimilar design philosophies.
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Cross-sectional observational study to investigate psychometric properties of an adapted Thai version of the refined Scoliosis Research Society-22 (SRS-22) questionnaire. ⋯ The adapted Thai version of the SRS-22 questionnaire had validity and reliability, which can be used to assess the outcome of treatment among Thai-speaking patients with adolescent idiopathic scoliosis.
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Cost effectiveness analysis for single-level instrumented fusion during a 5-year postoperative interval. ⋯ In the future, surgeons will need to demonstrate cost-effectiveness as well as clinical efficacy in order to justify payment for medical and surgical interventions, including lumbar spine fusion. This study indicates that at 5-year follow-up, single-level instrumented posterolateral spine fusion is both effective and durable, resulting in a favorable cost/QALY gain compared to other widely accepted healthcare interventions.
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Multicenter Study Comparative Study
Body appearance and quality of life in adult patients with adolescent idiopathic scoliosis treated with a brace or under observation alone during adolescence.
The Scoliosis Research Society (SRS) brace study (published in the JBJS-A, 1995) was comprised of patients with adolescent idiopathic scoliosis with moderate curve sizes (25°-35°). Forty observed and 37 braced patients (77% of the original group) attended a follow-up, a mean of 16 years after onset of maturity. ⋯ Patients who experienced less body asymmetry were more satisfied with treatment and had a better quality of life. In spite of similar curve sizes and trunk rotation in both groups, the nonbraced patients felt that their body appearance was less distorted than that of the braced patients.
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Prospective cohort study. ⋯ Awkward postures were associated with chronic LBP in the general population. Exposure to awkward postures at 2 measurements with 5 years in between did increase the risk for incident chronic LBP, but not for persistence of chronic LBP.