Zeitschrift für Orthopädie und ihre Grenzgebiete
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Z Orthop Ihre Grenzgeb · Jan 2006
[Anatomic reduction and monosegmental fusion for high-grade developmental spondylolisthesis L5/S1].
Developmental spondylolisthesis leads to lumbosacral kyphosis with retroversion of the sacrum and lumbar hyperlordosis. The overall sagittal profile of the spine is affected. The deformity is progressive during growth. This retrospective study describes a technique for complete reduction with clinical and radiological evaluation. ⋯ The technique described allows for a nearly anatomic reduction with correction of slippage as well as segmental kyphosis. Correction of the local deformity with monosegmental fusion L5/S1 improves dramatically the overall sagittal profile of the spine. Fusion of the primarily healthy segment L4/5 can be avoided.
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Z Orthop Ihre Grenzgeb · Jan 2006
[Preoperative planning and computer assisted surgery in ankylosing spondylitis].
The following study describes a technique for preoperative planning and computer-assisted correction osteotomy in the treatment of ankylosing spondylitis. The effect on the overall sagittal profile is evaluated. ⋯ Precise preoperative planning and correction osteotomy exactly according to this planning allow for an excellent correction of the sagittal profile even in severe ankylosing spondylitis. Pelvic tilt and gravity line are normalised, the patient is able to adopt an ergonomic upright position. Navigation facilitates the intraoperative transfer of the preoperative planning.
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Z Orthop Ihre Grenzgeb · Jan 2006
[Hemivertebra resection in congenital scoliosis -- early correction in young children].
Congenital scoliosis due to hemivertebrae usually progresses during further growth and leads to severe deformities. Early correction in young children is therefore required. ⋯ Correction surgery of congenital scoliosis should be performed early before the development of severe local deformities and secondary structural changes. Posterior resection of the hemivertebrae with transpedicular instrumentation allows for early intervention in very young children. Excellent correction in both the frontal and sagittal planes, and a short segment of fusion allow for normal growth in the unaffected parts of the spine.
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Z Orthop Ihre Grenzgeb · Jan 2006
[Controlled distraction as a therapeutic option in moderate degeneration of the intervertebral disc -- an in vivo study in the rabbit-spine model].
The aim of this study was to investigate the effects of temporary distraction on a degenerated intervertebral disc to characterize regenerative changes associated with disc distraction. ⋯ The results of this study suggest that disc regeneration can be induced by axial dynamic distraction in the moderately degenerated rabbit intervertebral disc. The decompressed rabbit intervertebral discs showed signs of tissue recovery at the cellular and histological levels after temporary disc distraction.
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Z Orthop Ihre Grenzgeb · Nov 2005
Comparative Study Clinical Trial[Clinical and radiological results of the thrust plate prosthesis in patients with aseptic necrosis of the femoral head].
In this study, we investigated the results after implantation of the thrust plate prosthesis (TPP) in patients with femoral head necrosis. We intended to answer the question if the femoral neck prosthesis, inaugurated by Huggler and Jacob in Switzerland, which needs a good bone stock for a successful implantation, is a recommendable alternative to other cementless intramedullary fixed prostheses. ⋯ Due to excellent clinical results and nearly identical findings in the survivorship analysis in comparison to cementless stem prostheses, the TPP is also a good alternative implant for total hip arthroplasty in patients with femoral head necrosis. For a successful implantation of the TPP a good bone quality of the proximal femur is necessary. Therefore we cannot recommend the use of a thrust plate prosthesis in patients with femoral head necrosis and simultaneous osteopeny.