Zeitschrift für Orthopädie und ihre Grenzgebiete
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Z Orthop Ihre Grenzgeb · Jan 1999
Review[Corrective osteotomies of the lower extremities following posttraumatic deformities].
As part of a retrospective analysis of posttraumatic malunions of the lower extremity, the causes for deformity, as well as indications and methods for corrective osteotomies are reviewed. ⋯ The review of the literature, as well as of our own results, shows that deformities in the frontal plane should be corrected if they exceed 10 degrees of varus or 15 degrees of valgus. Malunions of more than 15 degrees in the sagittal and 15-20 degrees in the transverse plane should also be considered for correction, while a shortening of more than 3 cm represents an indication for corrective osteotomy. Callus distraction techniques have proven valuable in the correction of posttraumatic malunions of the lower leg, especially when soft tissue compromise is evident.
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Z Orthop Ihre Grenzgeb · Jan 1999
[Results of shoulder hemiarthroplasty in patients with acute and old fractures of the proximal humerus].
We report on a prospective study of 22 patients after shoulder hemiarthroplasty in acute and old proximal humerus fractures. ⋯ By performing hemiarthroplasty pain relief can be achieved, especially in old fractures. The postoperatively achieved joint function mainly depends on the type of fracture as well as ist age. In cases with a destroyed glenoid we now prefer to perform a total arthroplasty. In our opinion, general cement use for shaft fixation is not necessary.
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Z Orthop Ihre Grenzgeb · Jan 1999
Comparative Study[High tibial osteotomy--primary stability of several implants].
High tibial osteotomy in varus knee has been performed for a long time. Several newer operation techniques have been established in recent years. We tested the primary stability of several of these techniques in vitro. ⋯ The clinical significance of the results is limited by the relevance of the protocol, which for practical reasons did not account for the soft tissue situation around the knee. Thus, primary stability of the tested devices was generally comparable as long as they were correctly implanted. It was found, that lateral distance of the osteotomized bone should not exceed 3 mm. If the medial cortical is sawed, another medial implant is necessary to ensure sufficient primary stability.