Trochlear Block Recession in an Alpaca with Traumatic Lateral Patellar Luxation

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Abstract:

Objective

To report surgical treatment of traumatic lateral patellar luxation using trochlear block recession in an alpaca. Study Design

Clinical case report. Animals

Five-year-old female alpaca. Methods

Grade IV/IV lateral, left patella luxation and mild femoropatellar joint effusion was identified by palpation and visual assessment, and confirmed by ultrasonography and radiographs. Trochlear block recession combined with lateral retinacular release and medial imbrication to restore patella function. Results

Progressive improvement in weight bearing occurred during hospitalization (6 days) and at 3.5 weeks, no lameness was observed; radiographically, the patella was in normal anatomic alignment. At 15 months, there were no signs of lameness with unrestricted exercise and the alpaca had given birth to another cria. Conclusions

In this alpaca with traumatic origin of the lateral patellar luxation and normal femoro-tibial alignment, a combination of retinacular imbrication, contralateral release, and trochlear block recession were successful for long-term treatment of lateral patellar luxation. Clinical Relevance

Although trochlear block recession is most commonly performed in small animals, this technique may be useful in treatment of traumatic patellar luxations in camelids.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1532-950X.2008.00444.x

Affiliations: Department of Clinical Sciences, New York State College of Veterinary Medicine, Cornell University, Ithaca, NY

Publication date: April 1, 2009

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