Learning Objectives 1. What is medial buttressing? 2. Causes of patellar luxation towards the medial side of the trochlear groove. 3. What is the significance of apparent non-responsiveness to previous anti-inflammatory injection? Does it have any involvement with the lameness? 4. Does Benadryl have any effect on bone/cartilage development? 5. Are there any congenital abnormalities that would present in this way? 6. What is the average weight of a Pomeranian? 7. Look up musculoskeletal abnormalities without systemic signs (no apparent systemic signs on PE). 8. What motor neuron problems might elicit pain on dorsal flexion of the tail?