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
