Osteoarthritis, also called degenerative joint disease is the most common form of arthritis. It occurs most often in older people. This disease affects the tissue covering the ends of bones in a joint (cartilage). In a person with osteoarthritis, the cartilage becomes damaged and worn out causing pain, swelling, stiffness and restricted movement in the affected joint. Although osteoarthritis may affect various joints including hips, knees, hands, and spine, hip joint is most commonly affected. Rarely, the disease may affect the shoulders, wrists and feet.
Femoroacetabular Impingement (FAI)
The hip is a ball-and-socket joint which is lined by cartilage and normally moves freely. Femoroacetabular Impingement (FAI) is due to ‘impingement’ or abnormal contact between the ball (femoral head) and socket (acetabulum). This is commonly the result of either an abnormally shaped ball (cam lesion), or socket (pincer lesion) or both (mixed cam and pincer). When the abnormally shaped ball or socket comes into contact with other structures (‘impinges’), it can result in damage to the cartilage along the rim of the socket (the labrum) or to the cartilage lining the socket (the articular cartilage). Tears of the hip ligament (known as the ligamentum teres) may also result.
What is a Labral Tear?
The hip is a ball-and-socket joint, lined by cartilage, which normally moves freely. The labrum is a specialised cartilage that lines the rim of the hip socket. It deepens the socket, protects the underlying cartilage lining the joint (ie. the articular cartilage) and forms a seal around the ball (femoral head). If abnormal contact between the ball (femoral head) and socket (acetabulum) occurs, this direct contact to the labrum can result in a tear (ie. a labral tear). If you have a labral tear, you actually have femoral acetabular impingement (FAI) with a labral tear.