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首页> 外文期刊>The Journal of hand surgery, European volume >Morphology of the proximal and middle phalanx of fingers with regard to the Ascension PyroCarbon PIP total joint
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Morphology of the proximal and middle phalanx of fingers with regard to the Ascension PyroCarbon PIP total joint

机译：提升PyroCarbon PIP全关节的手指近端和中指骨的形态

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摘要

The Ascension PyroCarbon prosthesis has been used in proximal interphalangeal joint osteoarthritis. The dimensions of the intramedullary distal metadiaphyseal canal (isthmus) of the proximal phalanx and the base of the middle phalanx of cadaver fingers were investigated radiographically (n = 304) and macroscopically (n = 152). In up to 30% of the phalanges, the isthmus was smaller than the stem of the smallest proximal component size. The distal component head was always smaller than the middle phalanx base. Insertion and success of the Ascension PyroCarbon prosthesis is strongly dependent on bone morphology. A critical examination of the isthmus in radiographs is recommended in planning. If the isthmus is clearly smaller than the smallest proximal component, insertion of the prosthesis could be inadvisable. A clear mismatch between the distal component and the middle phalanx base should be avoided due to the potential risk for late subsidence and failure of the prosthesis.
机译：Ascension PyroCarbon假体已用于近端指间关节骨关节炎。射线照相法（n = 304）和肉眼观察（n = 152）对尸体指骨近端指骨和远端中指骨的髓内远端干dia端管（峡部）的尺寸进行了研究。在多达30％的指骨中，峡部小于近端组件尺寸最小的茎。远端头始终小于中指骨基底。提升PyroCarbon假体的插入和成功在很大程度上取决于骨的形态。建议在计划中严格检查射线照相中的峡部。如果峡部明显小于最小的近端组件，则不建议插入假体。应避免远端部件和中指骨基底之间明显的不匹配，因为这可能会导致后期下陷和假体失败。

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