Two young lame male cats are presented for your evaluation

Pelvic limb lameness suggested the need for pelvic radiographs

Patient #1 - Radiographs were made of the pelvis

a VD view is shown

Radiographic diagnosis of the first patient

Long-standing physeal fracture of the femoral head with secondary resorption of the femoral neck resulting in its “apple core” appearance - the capital epiphysis retains it’s more normal morphology and density because of a lack of blood supply.

Note the avulsion fracture of the ischial tuberosity on the left.

Be cautious of diagnosing sacroiiac luxations - the pelvis is obliqued in this study permitting visualization of the normal joint on the left – but there is no cranial displacement of the left hemipelvis.

Patient #2 - Radiographs were made of the pelvis of a British shorthair 2 yr mc

a VD view is shown

Patient #1 - Radiographs were made 3 days later following surgical removal of the head and neck

Radiographic diagnosis of the second patient

The physeal fracture of the femoral head is bilateral with minimal resorption of each femoral neck - the capital epiphysis retains it’s near normal morphology and density because of a lack of blood supply

Note the marked varus deformity of the femoral necks

The malposition of the femoral necks suggests impaction on the femoral heads and a bony healing that was not was evident at surgery

The trauma appears more chronic in this patient

Patient #2 - Radiographs were made 2 days later following surgical removal of the head and neck bilaterally