Learning Issues 1) What is a cranial drawer sign? What is normal, and what is expected in a cranial cruciate ligament rupture? 2) What types of injury could cause stifle joint pain and effusion? 3) What other types of abnormalities could cause partial weight bearing lameness in a hind leg? 4) Is 4 cups of food a day of Hills Maintenance Dry a normal amount for this size/type of dog? 5) What would we expect to see or learn from the joint tap? 6) What are possible underlying causes that could lead to weakening of the cranial cruciate ligament? 7) Could osteosarcoma cause the clinical signs seen in this case?