Facts for Hypotheses Rimadyl not effective: neoplasia not responsive to anti-inflammatory drugs Right worse than left: Suggests localization of pain Ð not systemic problem Grade 1/4: Suggests pain Ð early disease Hock/Stifle not painful: localization of pain limited to proximal hind limb Weight carried in front: compensation for pain in hind limbs Lame in hind legs: pain in hind limbs Awkward gait for past few weeks: Not acute, pain or space occupying lesion, or pain or degenerative changes in joint Range of motion: Limited, compromise of joint space, or pain or degenerative changes in joint Uncomfortable when sitting: Pain in pelvis or proximal limb 9mos: young dog, certain neoplasias common in young dogs, problems at early age suggest congenital disorders, growth disorders common in young dogs due to nutrition Rott: large breed, predisposed to certain neoplasias, nutritional imbalances and degenerative diseases No muscle pain or atrophy: Localized to bone or joint, or early disease Clicking in both elbow joints without pain: Suggests early degenerative changes in the joint, could be poor nutrition or congenital defect Reluctance to go up or down stairs: Suggests pain and a reluctance to move joints Worse in the morning and after exertion: activity in joint or prolonged periods of immobility stress joint Ortalani Sign positive on right, too painful to tell on left: sign of joint laxity Fed Large breed food free choice: suggests that nutritional demands are not being met