FAI involves abnormal bone growth in the hip joint, causing friction and impingement during movement. Over time, this repetitive mechanical stress leads to the gradual wear and tear of the hip joint tissues, including the cartilage lining the joint.

As FAI persists, the friction within the hip joint can damage the articular cartilage, which normally provides a smooth surface for joint movement. As this cartilage damage progresses, hip pain, joint stiffness, and decreased mobility can result.

One of the most concerning long-term effects of untreated FAI is the development of hip osteoarthritis. The gradual wear and tear on the joint’s cartilage and other structures can eventually lead to arthritis, characterized by pain, inflammation, joint deformity, and reduced mobility.

FAI can cause the labrum, a ring of cartilage that lines the hip socket, to deteriorate over time. A damaged labrum can contribute to hip pain and instability.

Untreated FAI can increase the risk of developing secondary hip conditions, such as tendinitis, hip bursitis, and muscle strains, due to altered hip mechanics, instability, and abnormal loading of the joint.