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Patellaluxation

Patella dislocation

Der Unfallchirurg volume 114, pages 345–359 (2011)Cite this article

Zusammenfassung

Bei der Patellaluxation handelt es sich um eine einmalige oder wiederkehrende Dislokation der Kniescheibe aus ihrem femoropatellaren Gleitlager. In der Regel luxiert die Patella nach lateral. Die Patellaluxationen werden unterschieden in kongenitale, habituelle und traumatische Luxationen. Zusätzlich wird zwischen rezidivierenden und chronischen Patellaluxationen differenziert. Die Ätiologie der Patellaluxation ist nicht einheitlich und kann durch verschiedene angeborene und/oder erworbene Ursachen, wie z. B. ein Genu valgum, eine Patelladysplasie oder eine Patella alta bedingt sein. Häufig kommt es zu einer Spontanreposition nach Luxation. Neben der klinischen Untersuchung gehören die Röntgendiagnostik und eine Magnetresonanztomographie des betroffenen Kniegelenks zur Diagnostik. Abhängig von möglichen Begleitverletzungen, wie Frakturen oder Bandrupturen, wird die Entscheidung zur konservativen oder operativen Therapie gestellt.

Abstract

The patella dislocation is defined as a non-recurring or recurrent dislocation of the patella from the patella surface of the femur. In general the patella dislocates in the lateral direction. Patella dislocations are subdivided in congenital, habitual or traumatic dislocations. Furthermore patella dislocations are differentiated in recurrent and chronic dislocations. Etiology of patella dislocations is not consistent and can be due to genu valgum, patella dysplasia or patella alta etc. Frequently the patella reposes spontaneously after dislocation. Besides examination of the knee, x-ray and magnetic resonance tomography belong to clinical diagnostics of the knee joint. Decision between conservative and operative therapy is addicted to accompanying injuries like fractures or ligamental injuries.

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Abbreviations

Laxität der Patella:

Beschreibt die physiologische Translation des Gelenks, die benötigt wird, um die physiologischen Bewegungsumfänge ausführen zu können.

Hyperlaxität:

Ist die über das physiologische Maß gesteigerte Translation eines Gelenks, die zu einer Luxation der Patella führen kann.

Subluxation:

Ist die vermehrte, pathologische Translation, wobei kein vollständiger Kontaktverlust erreicht wird. Die Patella reponiert spontan.

Instabilität:

Beschreibt die Unfähigkeit, die Patella im Gleitlager zu zentrieren.

Luxation der Patella:

Stellt den kompletten Kontaktverlust der Gelenkflächen dar, zu dessen Wiederherstellung es der Reposition der Patella bedarf. Bedingt durch die Instabilität kommt es zu einer Luxation der Kniescheibe in der Regel nach außen. Eine Luxation nach innen ist sehr selten.

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  1. Klinik für Unfallchirurgie, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, 24105, Kiel, Deutschland

    S. Oestern, D. Varoga, S. Lippross, M. Kaschwich, J. Finn, B. Buddrus & A. Seekamp

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Oestern, S., Varoga, D., Lippross, S. et al. Patellaluxation. Unfallchirurg 114, 345–359 (2011). https://doi.org/10.1007/s00113-011-2012-z

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Schlüsselwörter

  • Patellaluxation
  • Patelladysplasie
  • Instabilität
  • Laterales Release

Keywords

  • Patella dislocation
  • Patellar dysplasia
  • Instability
  • Lateral release