Hip Muscle Strength in FAI Versus Normal Controls

Inclusion Criteria: * Males and Females. * Aged 18-30. * Control group - Normal range of movement and no evidence of femoro-acetabular impingement on clinical examination (negative impingement test, no symptoms). * Participants with femoro-acetabular impingement as diagnosed clinically and on radiological imaging for the comparison group (MRI). Exclusion Criteria: * Patients under the age of 18. * Patients over the age of 30. * Control group - evidence of underlying pathology affecting the hip, abnormal range of motion, evidence of femoro-acetabular impingement on clinical examination. * Previous surgery of the hip joints. * Medical history of arthritis (including rheumatoid and reactive). * Family history of femoro-acetabular impingement (control arm participants). * Patients who are currently experiencing or have experienced hip pain in the previous 1 year (control arm). * Other conditions (e.g. neurological, muscular dystrophy etc) which may affect hip muscle strength.