Clinical orthopaedics and related research
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Clin. Orthop. Relat. Res. · Sep 2011
Does norepinephrine influence pain behavior mediated by dorsal root ganglia?: a pilot study.
Postganglionic neurons in the sympathetic nervous system reportedly are involved in lumbar radicular pain and release norepinephrine (NE), a neurotransmitter. Increased numbers of sympathetic nerve fibers have been found in dorsal root ganglion (DRG) neurons in a root constriction model. Whether this is a reasonable model for pain, however, is unclear ⋯ An α(2)-antagonist may be an appropriate agent for trials to treat lumbar radicular pain.
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Clin. Orthop. Relat. Res. · Sep 2011
Two-stage reimplantation for treating prosthetic shoulder infections.
Two-stage reimplantation for prosthetic joint infection reportedly has the lowest risk for recurrent infection. Most studies to date have evaluated revision surgery for infection using an anatomic prosthetic. As compared with anatomic prostheses, reverse total shoulder arthroplasty is reported to have a higher rate of infection. ⋯ Level IV, case series. See Guidelines for Authors for a complete description of levels of evidence.
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Clin. Orthop. Relat. Res. · Sep 2011
Frequency, risk factors, and prognosis of prolonged delirium in elderly patients after hip fracture surgery.
Delirium in elderly patients after hip fracture surgery is believed to be a transient event, although it frequently lasts for more than 4 weeks. ⋯ Level II, prognostic study. See Guidelines for Authors for a complete description of levels of evidence.
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Clin. Orthop. Relat. Res. · Sep 2011
Reverse total shoulder arthroplasty improves function in cuff tear arthropathy.
Early failure due to glenoid loosening with anatomic total shoulder arthroplasty in patients with severe rotator cuff deficiency led to the development of the reverse ball-and-socket shoulder prosthesis. The literature reports improved short-term pain and function scores following modern reverse total shoulder arthroplasty (RTSA) in patients with cuff tear arthropathy (CTA). ⋯ Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.
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Clin. Orthop. Relat. Res. · Sep 2011
Do less medialized reverse shoulder prostheses increase motion and reduce notching?
Cuff tear arthropathy is the primary indication for total reverse shoulder arthroplasty. In patients with pseudoparalytic shoulders secondary to irreparable rotator cuff tear, reverse shoulder arthroplasty allows restoration of active anterior elevation and painless shoulder. High rates of glenoid notching have also been reported. We designed a new reverse shoulder arthroplasty with a center of rotation more lateral than the Delta prosthesis to address this problem. ⋯ Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.