1. Differentials Flexion fracture of the supracondylar humerus Rule InRule Out Hx of left arm traumaUsually a result of falling onto a flexed elbow (+) swelling (+) limitation of movement (+) gross deformity of the left arm

2. Gartland Classification of Flexion Fractures of Supracondylar Humerus Type INondisplaced Type IIDisplaced with intact anterior cortex Type IIIComplete displacement; usually anterolateral

3. Differentials Elbow Joint Dislocation (Posterior) Rule InRule Out Hx of fall on an extended armOn palpation, the olecranon is displaced from the plane of the epicondyles (+) swelling (+) limitation of movement (+) gross deformity of the left arm

4. Differentials Juvenile Idiopathic (Rheumatoid) Arthritis Rule InRule Out 15/FHx of fall on an extended arm (+) swellingMorning stiffness (+) limitation of movementUsually polyarticular (+) gross deformity of the left arm Usually presents with other systemic manifestations