Presentation
Presents with with pain on bilateral hip extension and progressive lameness.
Patient Data
On the lateral projections, one of the coxofemoral joints appears luxated and is believed to be the left. There is poor congruity to the left coxofemoral joint, seen best on the VD projections, with a shallow acetabulum and flattening of the femoral head. Bilaterally there is mild periarticular osteophytosis along the acetabular margins, thickening of the femoral necks and a thin rim of sclerosis seen along the femoral necks consistent with Morgan's line. Bilaterally there is an increased intramedullary opacity within the femoral diaphyses. Mild left pelvic limb muscle atrophy.
Bilateral hip dysplasia, worse on the left, with luxation of the left coxofemoral joint. Left pelvic limb muscle atrophy. Panosteitis.
Case Discussion
Hip dysplasia is a developmental disorder of large dogs that leads to osteoarthrosis of the coxofemoral joints. The underlying pathology is laxity of the hip joints.


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