AS-shaving, Coventry Procedure
AS ... Acromioscapular? Why shoulder?
Coventry: subtraktive Osteotomie
Die konventionelle subtraktive Tibiakopfosteotomie (Coventry-Osteotomie) und die additive Tibiakopfosteotomie mittels Fixateur externe (Hemikallotasis) stellen zwei Möglichkeiten zur operativen Korrektur eines Genu varum dar.
....22] For example, an extensive clinical review[24] reports on 128 knees that were studied for up to 15 years, finding a revision rate was only 10.9 . 1. 1 The Traditional Approach to High Tibial Osteotomy The most common form of HTO is the closing wedge osteotomy, popularized by Coventry in 1973 [3] . The wedge is first planned on a frontal plane standing X ray by drawing a wedge of the desired correction angle, where the wedge s upper plane is parallel to the tibial plateau and the lower plane is above the tibial tubercle. Ideally , the wedge will produce a hinge of cortical bone ....
....with several screen updates per second. Referring to the online computer graphics, the surgeon then inserted two K wires into the proximal tibia for each resection plane. 8. The wires were then used as saw guides to perform the osteotomy in a manner similar to the traditional Coventry technique [3] . Osteoclasis was used to complete the formation of a medial hinge. 9. After the bone wedge was removed and the tibia adjusted to the new angulation, standard step staples were used to immobilize the fragments and the surgical field was closed. 2.1 A Preoperative Planning System The ....
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