Investigation Of The Radiological Values Used For Cam-Type Femoroacetabular ？mpingement (FAI) ？nTurkish Population ？n Asymptomatic ？ndividuals

Abstract Femoroacetabular impingiment (FAI) can cause arthrosis and pain in the hip joint atan early age. FAI can be seen solo in the femur neck or solo in the femoral head due tomorphological changes (Cam-type FAI), or only in the acetabulum femur head excessive covering (pincer type FAI) or in combination of both (mixt type FAI). Diagnosisis made by clinical and radiological examinations. Alpha angle (AA) and femoral head-neck offset (FHNO) are measured for radiological diagnosis of cam-type FAI on computed tomography (CT). However, in various studies showed incerase in AA and decrease in FHNO at asymptomatic hips, as in cam-type deformities. In this study, we aimed to examine the AA and the FHNO values in the Turkish society by examining theCT images of individuals who did not have any complaints from the hip joint.Hip joints of abdominal CT examinations were investigated for this purpose. In all hips,33 (14.4%) had high AA and 15 (6.5%) low FHNO in the hip joint. As a result, it is obser-ved in the society that there may be asymptomatic individuals who are compatible with ra-diologically cam-type FAI