Learning Issues * Ortalani sign: What the sign is and when it is seen in patients * Benefits of a total hip replacement vs. femoral head osteoectomy * Learn the different signs for malformation vs. cartilage damage * Different hind leg lameness that can present the same symptoms that the patient presents * Learn the pathophysiology and disease process of multiple hind leg lameness * Be able to work as a group in coming up with differential diagnosis and plan of action