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Osteoarthritis of the hip (coxarthrosis)

Definition of hip
Osteoarthritis of the hip or hip osteoarthritis is the progressive destruction of the cartilage of the hip joint (degenerative joint disease). During the progression of OA, all the structures of the joint are affected. Fragments of cartilage in the joint crumble, causing local inflammation more or less painful. The hip is the most common cause of hip pain.

Origins and risk of osteoarthritis of the hip

The hip is a common condition occupying the first place in the pathology of the hip. We distinguish the so-called primitive when hip osteoarthritis of the hip occurs without specific cause, and secondary osteoarthritis when preexisting disease or malformation (dysplasia) promotes its appearance. The secondary coxarthrosis start earlier, around the age of 30 or 40 years, and have a generally change faster than the primitive coxarthrosis.

A special form is represented by osteoarthritis of the hip or rapidly destructive hip osteoarthritis, which results in less than a year, a total loss of cartilage with bone destruction of the femoral head.

Causes and diagnosis of osteoarthritis of the hip

The hip osteoarthritis is a degenerative disease of the hip with multiple origins (malformation, mechanical ...). It is caused by a process of destruction and repair of cartilage. The cartilage allows bones to two slide one on the other and to ensure the mobility of a joint. In response to excess pressure, cartilage swelling (edema) and fragile, and fragments will fall into the joint.

In parallel, a biological reaction causes overactive cells responsible for cartilage repair but also to destroy it. Eventually, these cells (chondrocytes) are exhausted and die, and the whole joint is affected (inflammation of the synovial membrane that surrounds the joint, thickening of the bones ...).

Symptoms of osteoarthritis

Symptoms of hip pain are the main manifestation of osteoarthritis of the hip. They have a mechanical time, appearing when the joint is loaded or active (standing, walking ...) and relieved at rest. The pain may sit in front of the joint, that is to say at the groin or to the thigh. Outermost pain, even to the buttock or knee, are also possible.

When the disease is more advanced, functional impairment occurs with walking limitation (doctors talk about walking distance) and a limp. At this point, certain gestures or movements of everyday life gets tough, up or down as a car or a bath or sit on a seat too low.

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