Lateral Patellar Luxation in Miniature Horses

Authors

  • THERESA A. ENGELBERT DVM,

    1. Departments of Food Animal and Equine Medicine, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina.
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  • L. P. TATE Jr. VMD, Diplomate acvs,

    1. Departments of Food Animal and Equine Medicine, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina.
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  • DANIEL C. RICHARDSON dvm, Diplomate acvs,

    1. Companion Animal and Special Species Medicine, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
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  • ERIKA K. HONORE dvm mph,

    1. Departments of Food Animal and Equine Medicine, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina.
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  • EDWINA D. E. LITTLE bvsc, mrcvs

    1. Departments of Food Animal and Equine Medicine, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina.
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Abstract

Bilateral luxation of the patella in four Miniature Horses was corrected by a lateral release incision and medial imbrication of the parapatellar fascia to the tendon of the sartorius muscle. Before surgery, the four horses had a grade 3 to 4 lateral patellar luxation bilaterally and had difficulty walking. Trochlear ridge hypoplasia was evident on radiographs in each horse. Follow-up information varied from 11 months to 4 years after surgery. Three horses had no patellar luxation or lameness. The other horse had a normal right stifle, but patellar luxation (grade 3) had recurred on the left.

Ancillary