Pain
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Randomized Controlled Trial Multicenter Study Comparative Study
Efficacy of botulinum toxin type A for treatment of persistent myofascial TMD pain: a randomized, controlled, double-blind multicenter study.
Evidence of an effect by botulinum toxins is still lacking for most pain conditions. In the present randomized, placebo-controlled, crossover multicenter study, the efficacy of botulinum toxin type A (BTX-A) was investigated in patients with persistent myofascial temporomandibular disorders (TMD). Twenty-one patients with myofascial TMD without adequate pain relief after conventional treatment participated. ⋯ The number needed to treat was 11 after 1 month and 7 after 3 months. There were no significant changes after treatment in any other outcome measures, with the exception of pain on palpation, which decreased 3 months after saline injection (P<.05). These results do not indicate a clinical relevant effect of BTX-A in patients with persistent myofascial TMD pain.
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Randomized Controlled Trial Multicenter Study Comparative Study
Links between nurses' organisational work environment and upper limb musculoskeletal symptoms: independently of effort-reward imbalance! The ORSOSA study.
The role of psychosocial factors in the development of upper limb musculoskeletal disorders has now been clearly demonstrated. However, only a few studies have analysed the association between the organisational work environment and musculoskeletal disorders in health care workers. The main goal of this study was to test the hypothesis that some specific organisational constraints may be related to upper limb musculoskeletal symptoms experienced by registered nurses, independently of the effort/reward imbalance model and major confounding factors. ⋯ This study identified and quantified specific health care organisational factors that have an impact on nurses' upper limb symptoms, sometimes independently of ERI perception. A prospective study is needed to clarify the causal role of psychosocial and organisational work factors in upper limb injury in nurses. Organisational approaches may be more effective in improving health at work and may also have a longer-lasting impact than individual approaches.