The shoulder is the most mobile joint in the body, but because of this flexibility, it is not very stable and is easily injured.

Your shoulder has the widest range of motion of any joint in your body. This flexibility allows you to do everything from throwing a baseball and swinging a tennis racket, to lifting and moving equipment.

The shoulder joint is the most frequently dislocated major joint of the body—often caused by a significant force that separates the shoulder joint's ball away from the joint's socket.

Shoulder tendonitis often occurs in sports that require the arm to move over the head repeatedly, such as in baseball, weight lifting, and racket sports.

An injury to the rotator cuff, such as a tear, may happen suddenly when falling on an outstretched hand or develop over time because of repetitive activities.

Cubital tunnel syndrome feels similar to the pain that occurs from hitting the "funny" bone in your elbow.

The pain of tennis elbow is caused by damage to the tendons that bend the wrist backward away from the palm.

Other activities that can cause this condition include carrying a heavy suitcase, chopping wood, and using a chainsaw.

Detailed information on shoulder pain and the most common types of shoulder problems

The shoulder is a complex joint with several layers, including bones, ligaments, tendons, and muscles.

Common shoulder problems include dislocation, separation, bursitis, and rotator cuff tear.

If hip pain limits your ability to walk, work, or perform simple activities, you may want to talk to your doctor about a hip replacement.

To help the orthopedist determine your treatment, you'll need a physical exam, a medical history profile, and a description of symptoms.

For most orthopedic disorders and injuries, more than one form of treatment may be appropriate.

Millions of us struggle with pain and loss of motion because of joint damage caused by arthritis. If other treatments fail to offer relief, you may wonder about turning in your worn-out joints for new ones.

Orthopedic surgeons use arthroscopy to diagnose and treat joint problems. An arthroscope is a small, tube shaped instrument that is used to look inside a joint.

Joint replacement is a surgical procedure to remove and replace an arthritic or damaged joint with an artificial joint, called a prosthesis.

Common knee problems include sprains, strains, torn cartilage, and arthritis.

Meniscus tears can occur during a rotating movement while bearing weight, such as when twisting the upper leg while the foot stays in one place during sports and other activities.

The anterior cruciate ligament (ACL) is one of the most common ligaments to be injured. Learn about the four major ligaments of the knee.

To help the orthopedist determine your treatment, you'll need a physical exam, a medical history profile, and a description of symptoms.

For most orthopedic disorders and injuries, more than one form of treatment may be appropriate.

Orthopedic surgeons use arthroscopy to diagnose and treat joint problems. An arthroscope is a small, tube shaped instrument that is used to look inside a joint.

Joint replacement is a surgical procedure to remove and replace an arthritic or damaged joint with an artificial joint, called a prosthesis.

When a knee is severely damaged by disease or injury, an artificial knee replacement may be considered.