Patient Education Upper Extremity (arms) What is Tennis Elbow (Lateral Epicondylitis)? What are Hand and Wrist Fractures? What is Carpal Tunnel Syndrome? What is Thumb CMC Joint Arthritis? What is DeQuervain’s Tendinosis? What is Trigger Finger? Lower Extremity (legs) What is Hip Osteoarthritis? What is Knee Osteoarthritis? What is Ankle Arthritis and Degenerative Joint Disease? What is Ankle Instability? What are Flat Feet?