European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
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Single-stage posterior corpectomy for the management of spinal tumors has been well described. Anterior column reconstruction has been accomplished using polymethylmethacrylate (PMMA) or expandable cages (EC). The aim of this retrospective study was to compare PMMA versus ECs in anterior vertebral column reconstruction after posterior corpectomy for tumors in the lumbar and thoracolumbar spine. ⋯ Seven patients had complications that led to reoperation (5 infections). PMMA or ECs are viable options for reconstruction of the anterior vertebral column following tumor resection and corpectomy. Both approaches allow for correction of the kyphotic deformity, and stabilization of the anterior vertebral column with similar functional and performance status outcomes in the lumbar and thoracolumbar area.
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Comparative Study Clinical Trial
A kinematic analysis of relative stability of the lower extremities between subjects with and without chronic low back pain.
Even though a number of studies have evaluated postural adjustments based on kinematic changes in subjects with low back pain (LBP), kinematic stability has not been examined for abnormal postural responses during the one leg standing test. The purpose of this study was to evaluate the relative kinematic stability of the lower extremities and standing duration in subjects with and without chronic LBP. In total, 54 subjects enrolled in the study, including 28 subjects without LBP and 26 subjects with LBP. ⋯ There was a group interaction between side and lower extremities (F = 11.79, p = 0.001) as well as an interaction between age and dominance side (F = 7.91, p = 0.007). The relative kinematic stability had a moderate negative relationship with age (r = -0.60, p = 0.007) in subjects without LBP. Clinicians need to understand the effects of age and relative stability, which decreased significantly in the single leg holding test, in subjects with LBP in order to develop effective rehabilitation strategies.
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Comparative Study Clinical Trial
Adjacent-level degeneration after cervical disc arthroplasty versus fusion.
The principal objective of this study was to evaluate the incidence of adjacent-segment degeneration (ASD) in patients who underwent cervical disc arthroplasty (CDA) as compared with anterior cervical discectomy and fusion (ACDF). ⋯ Preservation of motion in the CDA patients was not associated with a reduction of the incidence of symptomatic adjacent-segment disease and there may be other factors that influence ASD.
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Comparative Study Clinical Trial
Validity of the 10-s step test: prospective study comparing it with the 10-s grip and release test and the 30-m walking test.
Cervical compressive myelopathy (CCM) is one of the common neurological disorders seen in the geriatric population. The 10-s Grip and Release ("G and R") Test and the 30-m Walking ("Walking") Test are widely known as quantifiable physical assessments for the severity of cervical myelopathy. We developed the 10-s Step ("Step") Test as another easily performable quantifiable measure for this. ⋯ Linear regression analyses showed that the results of the Step Test correlated with JOA scores to the same degree as the Walking Test results did, and to a greater degree than the G and R Test results did. Moreover, the results of the Step Test showed a significant degree of correlation with JOACMEQ-L. In view of these findings, our conclusion was that the easily performed Step Test is an useful test for assessing the severity of cervical myelopathy, especially for the lower limb dysfunction secondary to CCM.