Felis ISSN 2398-2950

Intra-articular stabilization of patellar instability

Contributor(s): James Cook, Noel Fitzpatrick

Introduction

  • Aim: to increase tension in periarticular soft tissues to limit patellar instability (adequate for most traumatic patellar luxation), or to realign the quadriceps mechanism if necessary (as it is for most developmental cases).
  • Tension is usually applied on lateral aspect, but some techniques involve both aspects of joint.
  • A number of techniques are commonly used alone or in combination.

Uses

  • Treatment of patellar instability due to developmental patellar instability, or acquired patellar luxation.
  • Acquired more common in the cat: therefore, extra-articular support may be all that is required for stability, in the absence of quadriceps mechanism malalignment or a shallow trochlear groove.

Requirements

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Preparation

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Procedure

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Aftercare

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Outcomes

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Prognosis

  • 85% success rate.
  • Realignment of quadriceps stifle extensor mechanism main objective (if necessary), technique used varies according to individual conformation of stifle and whether luxation is developmental or traumatic.

Further Reading

Publications

Refereed papers


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