The hips, along with the knees, are the large weight-bearing joints that allow you to walk, sit, bend and turn. As the body's most flexible, free-moving joint, a healthy hip can move back and forth, swing from side to side and perform twisting motions. This remarkable range is possible because of the hip joint's ball-and-socket design. The upper part of the femur (thigh bone) narrows down to a "neck" that ends in a round, ball-like "head". On the pelvis, a number of bony plates fuse together during growth to create a cup-like socket, called the acetabulum, into which the femoral head fits snuggly. Dense cartilage lines the acetabulum and coats the femoral head, providing shock-absorption and friction-free glide surfaces as the joint rotates through its range of motion. Strips of tough, flexible tissue, called ligaments, form a capsule around the junction of ball and socket, as well as lashing the femur to the pelvis. An overlay of different muscles and tendons that attach to the pelvis and bony points on the femur provide the mechanical leverage necessary for motion. Highly Reputable

Expert advice on why hip pain occurs and how you can help to remove the problem. Valuable advice, tips and information on hip and lower back pain.

Definition A hip osteotomy is a surgical procedure in which the bones of the hip joint are cut, reoriented, and fixed in a new position. Healthy cartilage is placed in the weight-bearing area of the joint, followed by reconstruction of the joint in a more normal position. Encyclopedia of Surgery: A Guide for Patients and Caregivers Expert

The first online support group for those interested in joint replacement, especially the hip joint. Founded in 1996.

AAOS Fact Sheet

Patient Information from Dr Matta, Good Samaritan Hospital, Los Angeles. Topics Hip replacement and pelvic osteotomy

Brief discussion of indications and results from Hip Arthroscopy Expert

Hip pain is usually associated with falling or with arthritis. Rarely, a hip problem starts at birth. Follow the chart to gain insight into your pain or problem. American Academy of Family Physicians