Presentation
Presents for lameness on the left pelvic limb for three weeks.
Patient Data
Right stifle: There is moderately increased soft tissue opacity within the joint. The lateral femoral condyle is flattened with a small radiolucent defect. There are linear, horizontal lines visible in the medulla of the femur.
Left stifle: There is lateral luxation of the patella, and the trochlear grooves of the femur appear shallow. There is increased soft tissue effusion within the joint. On both projections, there is a radiolucent defect in the lateral condyle of the femur involving subchondral bone. Small, rounded mineral opacities are visible in the caudal aspect of the joint. There are linear, horizontal lines visible in the medulla of the femur.
Osteochondritis dissecans lesion in the left lateral femoral condyle with fragments in the joint
Osteochondrosis in the right stifle
Bilateral stifle effusion likely due to OCD
Left lateral patellar luxation
Horizontal lines represent "growth arrest" lines and are incidental
An osteochondral defect was found in the left stifle medial femoral condyle at surgery.
Case Discussion
The left stifle was surgically explored. A large defect in the lateral condyle was debrided and treated with an OATS (autogenous osteochondral grafting) procedure. The luxating patella was repaired with a 4 in 1 procedure.
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