Intermediate
Technical
IVT
hip impingement
Abnormal contact between the femoral head and acetabulum causing pain and limited range of motion.
Full Definition
A condition where there is abnormal contact between the ball (femoral head) and socket (acetabulum) of the hip joint, leading to pain and restricted movement. Two main types exist: cam impingement (caused by excess bone on the femoral head/neck) and pincer impingement (caused by excess coverage of the acetabulum). This condition is increasingly recognized in young athletes, particularly those involved in sports requiring repetitive hip flexion such as soccer, hockey, and dance. Early diagnosis and treatment are important to prevent development of hip arthritis.
Usage
Usage note: Specify cam, pincer, or mixed type when documenting FAI.
In Context
- "The hockey player was diagnosed with cam-type hip impingement affecting his skating mechanics." — Clinical diagnosis
- "Arthroscopic treatment of hip impingement improved the athlete's range of motion significantly." — Surgical outcome
Also known as
femoroacetabular impingement
FAI
Contrasted with
normal hip anatomy
Don't confuse with
hip dysplasia
hip labral tear