Peer-reviewed veterinary case report
Patellar luxation and ligament tears in small dogs study 2004-2007
By Campbell, Courtney A et al.·Published in Journal of the American Veterinary Medical Association·2010·Las Vegas Veterinary Referral Center, United States·View original on PubMed →
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Original publication title: Severity of patellar luxation and frequency of concomitant cranial cruciate ligament rupture in dogs: 162 cases (2004-2007).
- Species:
- dog
Plain-English summary
A group of small-breed dogs with a knee problem called medial patellar luxation (MPL) were studied to see how often they also had a torn cranial cruciate ligament (CCLR). Out of 162 dogs, 41% had both conditions, and those with more severe MPL were more likely to have a CCLR. The average age of dogs with just MPL was around 3 years, while those with both issues were about 8 years old. This information can help veterinarians better understand the risks associated with MPL in small dogs and guide treatment options.
People also search for: small dog knee problems · patellar luxation treatment · torn ligament in dogs · dog knee surgery recovery · symptoms of dog knee injury
Abstract
OBJECTIVE: To evaluate severity of medial patellar luxation (MPL) and frequency of concomitant cranial cruciate ligament rupture (CCLR) in dogs. DESIGN: Retrospective case series. ANIMALS: 162 dogs (266 stifle joints). PROCEDURES: Medical records of 162 small-breed dogs with MPL were reviewed. Signalment, body weight, luxation grade, bilateral or unilateral MPL, CCLR, and difference in luxation grades between stifle joints were evaluated. Association between severity of MPL and CCLR was investigated. RESULTS: 58 dogs had unilateral MPL, and 104 dogs had bilateral MPL. Dogs ranged from 8.4 months to 16.7 years of age (mean, 5.7 years), and mean body weight was 5.45 kg (12 lb). Forty-one percent of all dogs had concomitant CCLR. Mean age for dogs with MPL alone was 3.0 years, which differed significantly from mean age of dogs with MPL and concomitant CCLR (7.8 years). Dogs with grade IV MPL were significantly more likely to have concomitant CCLR than were dogs with any other grade of MPL. In dogs with bilateral MPL and unilateral CCLR, there was a significantly higher grade of luxation in the stifle joint with CCLR. CONCLUSIONS AND CLINICAL RELEVANCE: Small-breed dogs with MPL and concomitant CCLR were older than were dogs with only MPL. Dogs with grade IV MPL were more likely to have CCLR than were dogs with other grades of MPL. Most dogs with concomitant CCLR had a higher MPL grade in the affected stifle joint than in the intact joint. These findings should be beneficial in client education and clinical diagnosis.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/20392187/