Mechanisms:
Posterior elbow dislocation
Repetitive stress ("Little League elbow")
Exam: pain with pronation or elbow/wrist flexion
May have associated ulnar nerve injury
Posterior elbow dislocation
Repetitive stress ("Little League elbow")
Medial epicondyle fracture 
Distal humerus fracture
Lateral epicondyle fracture 
Radial head fracture
Triquetrum fracture
Essex-Lopresti fracture
Lunate fracture
Capitellum fracture