Spine
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Review Comparative Study
Long adult deformity fusions to L5 and the sacrum. A matched cohort analysis.
A matched cohort analysis of long adult deformity fusions according to distal fusion level (L5 vs. S1). OBJECTIVE.: To compare the results of long adult deformity fusions to either L5 or the sacrum in the presence of a "healthy" 5-1 disc using a matched cohort analysis. ⋯ At 3 to 5 years' mean follow-up, long adult fusions to the sacrum required more procedures and had a higher frequency of complications than similar fusions to L5. For fusions to L5, subsequent subjacent disc degeneration is common and may be associated with a forward shift in sagittal balance. The ultimate influence of these factors on long-term outcomes remains to be seen.
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Multicenter Study
Spondylolisthesis, pelvic incidence, and spinopelvic balance: a correlation study.
A retrospective study of the sagittal alignment in developmental spondylolisthesis. ⋯ Since PI is a constant anatomic pelvic variable specific to each individual and strongly determines SS, PT, and LL, which are position-dependent variables, this study suggests that pelvic anatomy has a direct influence on the development of a spondylolisthesis.Study participants with an increased pelvic incidence appear to be at higher risk of presenting a spondylolisthesis, and an increased PI may be an important factor predisposing to progression in developmental spondylolisthesis.
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Review Comparative Study
Comparative analysis of pedicle screw versus hook instrumentation in posterior spinal fusion of adolescent idiopathic scoliosis.
A retrospective matched cohort study. ⋯ Pedicle screw instrumentation, although more expensive, offers a significantly better major and minor curve correction without neurologic problems and improved pulmonary function values in the operative treatment of AIS and enables a slightly shorter fusion length than segmental hook instrumentation.
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Review Case Reports
Spinal surgery in patients with Parkinson's disease: construct failure and progressive deformity.
Retrospective case series review of patients with Parkinson's disease undergoing elective spine surgery at a single tertiary referral center. ⋯ Patients with Parkinson's disease undergoing spine surgery in a single tertiary referral center had a very high reoperation rate associated with technical complications. Patients should be appropriately counseled regarding the increased risk of operative complications and closely followed for incipient failure.