Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association
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Observational Study
Non-specific low back pain in adolescents from the south of Portugal: prevalence and associated factors.
Low back pain (LBP) is a common condition in children and adolescents, and the prevalence has been increasing over the years. Most cases of LBP are due to non-specific causes; however, the role of these risk factors is still controversial. This study determined the prevalence of LBP in Portuguese adolescents and characterized the associated factors. ⋯ This study found a high prevalence of LBP in adolescents, with higher values in older students, female students and those who adopted incorrect positions when sitting or standing.
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Meta Analysis
The estrogen receptor α gene (XbaI, PvuII) polymorphisms and susceptibility to idiopathic scoliosis: a meta-analysis.
A genetic association meta-analysis of estrogen receptor α gene (ERα) polymorphisms with idiopathic scoliosis. ⋯ ERα Xbal and ERα PvuII polymorphisms are not obviously associated with risk of idiopathic scoliosis.
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Although delayed union or pseudoarthrosis after lumbar arthrodesis has been recognized as a major radiographic complication, little has been known about the effect of fusion status on the patient's quality-of-life (QOL) outcome. The purpose of this study was to investigate the effects of fusion status after posterior lumbar interbody fusion (PLIF) on QOL outcomes by using the Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ). ⋯ Incomplete fusion after PLIF correlated with poor improvement in walking ability and social life function. Therefore, the achievement of fusion after PLIF is essential to obtain better patient QOL outcomes.
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Recent rising concern about the cost-effectiveness ratio of total knee arthroplasty (TKA) led us to evaluate this successful procedure from the economic perspective, thereby helping policy-makers to conduct medical resource allocation more effectively and efficiently. However, up to now no study has investigated the influence of patients' psychological factors on their evaluation of TKA's cost-effectiveness. Therefore, we decided to determine whether and how depression, which is a common negative psychological factor in the population undergoing TKA, affects their economic evaluation of the procedure. ⋯ Our study might help policy-makers and clinicians identify which types of patients benefit most from TKA and then advise high-risk patients (high-level depression status in this study) about how to recovery better with limited resource allocation. Preoperative evaluation of patients' psychological state may decrease unnecessary economic burdens and suffering during the recovery period.