Equis ISSN 2398-2977

Patella: fragmentation

Contributor(s): Prof Gary M Baxter, Graham Munroe, Chris Whitton

Introduction

Pathogenesis

Etiology

Specific

Pathophysiology

  • Bone and cartilage fragment from distal aspect (apex) of patella.
  • Changes in biomechanics induced by medial patellar desmotomy   →    change in position of patella in intertrochlear groove or instability   →    fragmentation 3 weeks to 12 months post-operatively.
  • Following repetitive trauma to the patella region, eg upward fixation of the patella    →    chronic changes in the biomechanical forces on the patella.
  • The incidence of this condition has fallen now that medial patellar desmotomy is less commonly performed.

Diagnosis

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Treatment

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Prevention

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Outcomes

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Further Reading

Publications

Refereed papers

Other sources of information

  • McIlwraith C W, Nixon A J, Wright I M & Boening K J (2005)Arthroscopic Surgery of the Medial Femorotibial Joint. In:Diagnostic and Surgical Arthroscopy in the Horse.3rd edn. Mosby, Philadelphia. pp 242-245.
  • Walmsley J P (2003)The Stifle. In:Diagnosis and Management of Lameness in the Horse. Eds: Ross M W & Dyson S J. Saunders, Missouri. pp 460.


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