Specialty Exam Results If the right cranial cruciate ligament had been torn, we would expect to see a positive cranial drawer sign on that side. Since even under sedation we have a negative right cranial drawer we can rule out cranial cruciate rupture. If Titan has a congenital patellar luxation, we would expect to see bilateral laxity of the patella. Since the left patella does not show any laxity or pain under sedation, congenital malformation becomes less likely. The right patella can be luxated manually on extension but will return to its proper position with flexion, which makes it a grade II patellar luxation. The radiographs show no signs of arthritis or other abnormalities in the stifle. There is however, a mid-diaphyseal irregularity on the right femoral shaft. A horizontal lucent line marks a change in the angle of the diaphysis. The distal femur appears to be deviated laterally and caudally. There is no evidence of periosteal new bone growth or current bone lysis around the lesion. This would seem to indicate a healed midshaft fracture of the femur, which would be consistent with TitanŐs history of trauma followed by a period of recovery.