It can be difficult to differentiate between these two orthopedic problems. Luckily, the sit test, among other diagnostic evaluations, can help.
Differentiating between a torn cruciate ligament and hip dysplasia can be tricky, if not frustrating. In one study, 32% of dogs referred to a surgeon for hip dysplasia treatment actually had a torn cranial cruciate ligament. Let’s review the differences between the two conditions and how simply asking a dog to “sit” offers great clues.
Cranial Cruciate Ligament Tear
The severity of lameness depends on the severity of ligament disruption. For dogs with stable partial tears, lameness can be subtle and noted only after periods of strenuous activity. For dogs with complete tears, lameness will initially be severe and non-weight-bearing. Then, moderate to severe weight-bearing lameness will occur.
Rupture of the contralateral cruciate ligament occurs in 37% to 48% of dogs within six to 17 months of the initial diagnosis. However, ruptures can be bilateral on presentation, giving affected dogs what appears to be a neurologic, crouched walk.
In obvious cases, the keys to diagnosing cranial cruciate rupture are a positive cranial drawer sign and tibial thrust. But what about less obvious cases? …Visit site for more
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