Plantar fasciitis is the most common cause of heel pain. It is commonly referred to as a heel spur, although a heel spur, or bony growth on the heel bone, develops as a result of plantar fasciitis. The condition occurs when the long, flat ligament on the bottom of the foot (plantar fascia) stretches irregularly and develops small tears that cause the ligament to become inflamed. This inflammation is most often caused by walking with an abnormal inward twisting of the foot, called pronation. Over time, this slightly abnormal step may increase tension on the plantar fascia and cause it to become inflamed.
Lateral epicondylitis, commonly known as tennis elbow, is inflammation of the tendon that connects the muscles of the forearm, wrist, and hand to the upper arm at the elbow. The tendon on the bony outside (lateral) part of the elbow (the epicondyle) is most often irritated by overuse during physical activity.
Carpal tunnel syndrome is the term used to describe a specific group of symptoms (tingling, numbness, weakness, or pain) in the fingers or hand and occasionally in the lower arm and elbow. These symptoms occur when there is pressure on a nerve (median nerve) within the wrist (carpal tunnel). Carpal tunnel syndrome develops over time because of repetitive hand motions that damage muscle and bone in the wrist area.