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Grenzen der Rekonstruktion – Prothesen

Limitations of reconstruction – prostheses

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Zusammenfassung

Die Humeruskopffraktur ist eine häufige Verletzung, insbesondere des älteren weiblichen Patienten. Im Rahmen der Osteosynthese lassen sich in der Regel gute klinische Ergebnisse erzielen. Probleme werden jedoch weiterhin bei den die varisch dislozierten Humeruskopffrakturen, insbesondere wenn die mediale Säule zerstört ist, beobachtet. Hier sind eine anatomische Reposition des Kalottenfragments sowie ein medialer Knochenkontakt für ein gutes Operationsergebnis unentbehrlich. Ansonsten lässt sich ein sekundärer Varuskollaps und/oder ein Implantatversagen vorhersehen. Weitere Herausforderungen bilden die intraartikulären Frakturformen sowie die initial ischämen Humeruskopffrakturen. Die Indikation zur Frakturprothese ist immer dann gegeben, wenn keine stabile Osteosynthese in adäquater Reposition erzielt werden kann. Inverse Frakturprothesen stellen eine zunehmend verbreitete Therapieoption dar. Sie sollten jedoch den älteren Patienten >75 Jahren vorbehalten bleiben.

Abstract

Fractures of the proximal humerus are common, particularly seen in elderly, female patients. Using open reduction and internal fixation good clinical results can be achieved in general. But even today not every problem has been solved in the treatment of proximal humeral fractures. Varus displaced fractures are particularly challenging, especially when the medial column is destroyed. Anatomical reduction of the humeral head and medial bone contact are crucial for a good surgical outcome. Otherwise a secondary varus collapse and/or an implant failure are predictable. Further challenges are the intra-articular fracture patterns, as well as fractures with an initial ischemic humeral head. The indications for prosthetic replacement are always present if an initially stable internal fixation could not be achieved. The reverse fracture prostheses represent an increasingly common treatment option; however, the indication should be reserved for the elderly over 75 years.

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Jaeger, M., Maier, D., Izadpanah, K. et al. Grenzen der Rekonstruktion – Prothesen. Unfallchirurg 114, 1068–1074 (2011). https://doi.org/10.1007/s00113-011-2054-2

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