Tennis elbow is an inflammation around the bony knob on the outer side of the elbow. It occurs when the tissue that attaches to the bone becomes irritated. Playing racquet sports or anything that involves extending your wrist or rotating your forearm can cause tennis elbow. The most common symptoms of tennis elbow is pain on the outer side of the elbow and down the forearm.

Region Affected: Elbow and Forearm

Links:
A Patient's Guide to Cumulative Trauma Disorder - Lateral Epicondylitis (Tennis elbow) - Orthogate

Fractures (or breaks) often take place in the hand or wrist. A fracture can cause chronic pain, stiffness, and loss of movement. Because of the close relationship of bones with soft tissues such as ligaments, tendons, and nerves, movement may be restricted because of injury to soft tissue. Fractures that involve joint surfaces may lead to early arthritis in those involved joints. Certain fractures, especially of the bones in the wrist may not result in severe symptoms. Any injury which results in prolonged symptoms (more than one to two weeks) should be evaluated.

Region Affected: Hand and Fingers | Wrist

Links:
Fracture of the Finger - AAOS
Hand Fractures - AAOS
Scaphoid (wrist bone)Fracture - AAOS

Ligaments attach bone to bone across a joint. Injuries that involve the supporting ligaments may result in instability and weakness of the involved joint. Pain, joint clicking or popping commonly associated with weakness can be an indication that a joint injury has involved the ligaments.

Region Affected: Elbow and Forearm | Hand and Fingers | Wrist

Links:
Sprained Thumb - AAOS
Wrist Sprains - AAOS
Neck Sprains

Extensor tendons are just under the top surface of the skin, directly on the bone, on the back of the hands and fingers. Because of their location, they can be easily injured even by a minor cut. Jamming a finger may cause these thin tendons to rip apart from their attachment to the bone. After this type of injury, you can have a hard time straightening one or more joints. Treatment is necessary to get back use of the tendon.

Region Affected: Hand and Fingers | Wrist

Tendons are cordlike fibers that connect muscle to bone. The flexor tendons attach muscles in the forearm to bones on the palm side of the fingers. These tendons allow you to bend your fingers. If a flexor tendon is cut all the way through (lacerated), the finger can no longer bend on its own. If nearby nerves are also injured, the finger may be numb. A flexor tendon injury is often caused by a deep cut on the palm side of the wrist, hand, or fingers.

Region Affected: Hand and Fingers | Wrist

Strains involve the muscles and tendons. Tendons allow the muscle to move the joint. Injury to these structures generally result in pain with movement of the joint across which the tendon passes, and with force extended by that muscle.

Region Affected: Elbow and Forearm | Hand and Fingers | Wrist