Spine
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Randomized Controlled Trial Multicenter Study Comparative Study Clinical Trial
Comparison between allograft plus demineralized bone matrix versus autograft in anterior cervical fusion. A prospective multicenter study.
This study analyzed the fusion results of an allograft-demineralized bone matrix composite versus autograft in a prospective series of patients undergoing surgery for cervical disc disease. ⋯ The study revealed that the allograft-demineralized bone matrix construct gives a higher rate of graft collapse and pseudarthrosis when compared with autograft in a prospective series, although the differences were not statistically significant. The pseudarthrosis rate in the series may be high because of the large percentage of smokers and radiographic evaluation techniques. For the purpose of solid radiographic fusion, the use of autograft is recommended in anterior cervical surgery until other acceptable osteoinductive materials are developed.
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Case Reports Comparative Study
Intramedullary changes of the spinal cord in cervical spondylotic myelopathy.
This study retrospectively reviewed magnetic resonance imaging and delayed computed tomography after myelography of cervical spondylotic myelopathy patients who needed surgical treatment. ⋯ High intensity areas on T2-weighted magnetic resonance imaging were not correlated with the severity of myelopathy or surgical outcomes evaluated by the Japanese Orthopaedic Association score. Magnetic resonance imaging or delayed computed tomography in this study could not rule out the presence of white matter changes, including axonal loss or demyelination. Multisegmental (linear) high intensity areas on T2-weighted magnetic resonance imaging were associated with clinical evidence of extensive anterior horn cell and radiographic evidence of gray matter cavitation.
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Meta Analysis
The prevalence of low back pain in the literature. A structured review of 26 Nordic studies from 1954 to 1993.
A systematic review was done for all prevalence studies on low back pain in the Nordic population between 1954 and 1992 that could be identified. ⋯ A more stringent, systematic, and uniform methodologic approach to studying the prevalence (or incidence) of back pain is needed.
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Comparative Study
A test to measure lift capacity of physically impaired adults. Part 1--Development and reliability testing.
Two laboratory studies and one field study evaluated the safety and test-retest reliability of a new test of lift capacity. The first two studies were conducted in a carefully controlled laboratory setting. The first study investigated the safety and intra-rater reliability of the EPIC Lift Capacity test protocol with healthy adult subjects. The second study assessed the safety and inter-rater reliability of the test with disabled subjects. The third study was conducted in the field with 65 evaluators and investigated the safety and intra-rater reliability of the test with healthy adult subjects. ⋯ The safety and reliability of the EPIC Lift Capacity test was adequately demonstrated in a laboratory setting and across multiple field sites with evaluators who have varying types and degrees of professional preparation.