Orthop Traumatol Sur
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High-grade L5-S1 spondylolisthesis alters sagittal spinopelvic balance, which can cause low back pain and progressive neurologic disorder. The present study assessed spondylolisthesis reduction and maintenance over time with L4-S1 versus L5-S1 fusion using a lever-arm system and posterior fusion combined with lumbosacral graft. ⋯ The lever-arm system provided anterior-posterior reduction of spondylolisthesis and corrected slippage. Postoperative change in overall sagittal spinopelvic balance was slight and constant. Posterior L4-S1 fusion provided better long-term control of L5-S1 lordosis reduction than the shorter L5-S1 fusion. Retrospective study of level IV.
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Orthop Traumatol Sur · Sep 2014
Computer-assisted osteotomy for valgus knees: medium-term results of 29 cases.
Computer-assisted surgery has been shown to be beneficial for correcting misaligned lower limbs. The purpose of this study was to analyze the medium-term results of computer-assisted osteotomy for 29 valgus knees. The hypothesis was that computer navigation would allow a valgus deformity to be corrected with similar precision as varus deformity. ⋯ IV. Retrospective study.
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Orthop Traumatol Sur · Sep 2014
Complications of shoulder arthroplasty for osteoarthritis with posterior glenoid wear.
Anatomical total shoulder arthroplasty (TSA) for glenohumeral osteoarthritis (OA) and severe posterior glenoid wear may entail early postoperative complications (recurrence of posterior subluxation, glenoid loosening). To avoid these mechanical problems, reverse shoulder arthroplasty (RSA) has recently been proposed, mainly for its intrinsic stability. Our purpose was to present the results of TSA and RSA in glenohumeral OA with posterior glenoid wear of at least 20°. ⋯ Level IV; retrospective case series.
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Orthop Traumatol Sur · Sep 2014
The effect of posterior non-fusion instrumentation on segmental shear loading of the lumbar spine.
Lumbar stenosis and facet osteoarthritis represent indications for decompression and instrumentation. It is unclear if degenerative spondylolisthesis grade I with a remaining disc height could be an indication for non-fusion instrumentation. The purpose of this study was to determine the influence of a mobile pedicle screw based device on lumbar segmental shear loading, thus simulating the condition of spondylolisthesis. ⋯ Facetectomy plus undercutting laminectomy decreases segmental shear stiffness and increases anterior translational L4-L5 displacement. Shear stiffness of the instrumented segment is higher with the device and anterior displacements under shear loading are similar to the intact spine. This condition could theoretically be interesting for the simulation of non-fusion instrumentation in degenerative spondylolisthesis.
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Orthop Traumatol Sur · Jun 2014
The ilio-inguinal approach for recent acetabular fractures: ultrasound evaluation of the ilio-psoas muscle and complications in 24 consecutive patients.
The ilio-inguinal approach is used to achieve internal fixation of acetabular fractures. Although the outcomes of this procedure have been extensively reported, information is lacking on potential complications. More specifically, the effect on the ilio-psoas muscle, whose iliac attachments are almost completely released, has not been accurately evaluated. ⋯ Level IV, retrospective study.