Spine
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Biomechanical evaluation of occipitocervical instrumentation techniques. ⋯ Occipital screw placement off-midline improves screw loads under lateral bending forces on occipitocervical constructs, though loads for FE and ROT are unchanged. As screws pullout, the loads may be redistributed, resulting in increased screw pullout forces above. Despite the improvement in screw loads for laterally based plates during lateral bending, overall ROM across the occipitocervical junction is unchanged.
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A cross-sectional population study of magnetic resonance imaging (MRI) changes. OBJECTIVE.: To examine the pattern and prevalence of lumbar spine MRI changes within a southern Chinese population and their relationship with back pain. ⋯ LDD is common, and its incidence increases with age. In a population setting, there is a significant association of LDD on MRI with back pain.
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Clinical Trial
Motor control patterns during an active straight leg raise in chronic pelvic girdle pain subjects.
Repeated measures. ⋯ This MC pattern, identified during an ASLR on the affected side of the body, has the potential to be a primary mechanism driving ongoing pain and disability in chronic PGP subjects.
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Clinical Trial
Interdependence between disc space height, range of motion and clinical outcome in total lumbar disc replacement.
Clinical and radiologic assessment obtained from an ongoing prospective trial following total lumbar disc replacement (TDR) with ProDisc II. ⋯ A significant interdependence was observed between the parameters DSH, ROM and the clinical outcome following TDR. Whilst the DSH is restored, TDR leads to a significant decrease in postoperative ROM, particularly at the lumbosacral junction. Higher preoperative DSH and ROM revealed a beneficial effect on the postoperative segmental mobility. The subjective outcome evaluation indicates that TDR is a viable treatment option even in advanced stages of degenerative disc disease in the absence of other contraindications, in particular facet joint arthropathies.
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Prospective case series. ⋯ SIJ blocks with triamcinolone acetonide are beneficial for some patients with SIJ pain without spondyloarthropathy. The SIJ blocks showed a long-lasting efficacy in two-thirds of the patients; however, the duration of its efficacy was shorter in patients with a history of lumbar/lumbosacral fusion. These findings suggest the need for further studies.