Summary
A 9.5-month-old, female entire, 31.3 kg crossbred dog was presented with a 12 week
history of moderate weight-bearing right pelvic limb lameness. Radiographic, computed
tomographic, and ultrasonographic imaging revealed progressive avulsion fragmentation
of the right tibial tuberosity apophysis and a patellar tendon insertional enthesopathy
without physeal involvement. Conservative management was successful in achieving a
good clinical outcome. A progressive avulsion of the contralateral proximal tibial
physes that occurred concurrently resulted in development of an excessive tibial plateau
slope angle. The additional development of a moderate left distal femoral varus deformity
was surgically corrected. This is the first report of a progressive, traction injury
to the tibial tuberosity apophysis in a dog that appears clinically and radiographically
very similar to Osgood-Schlatter disease in humans.
Keywords
Tibial tuberosity - Osgood-Schlatter disease - apophysis