Femoroacetabular Impingement syndrome Flashcards
describe what femoroacetabular impingement syndrome(FAI) is
when altered morphology of the femoral head or acetabulum causes abutment of femoral neck on the edge of the acetabulum on movement
what movements of the hip are usually affected by FAI
usually flexion, adduction, internal rotation
what different types of FAI can occur
CAM, pincer or a combo of both
where is the deformity in a CAM type impingement
the femoral head/neck
where is the deformity in a pincer type impingement
the acetabulum
what group of people are CAM type impingements usually seen in
young athletic males
what group of people are pincer type impingements usually seen
in females
what anatomical change is seen in CAM type deformity
asymmetric femoral head with decreased head:neck ratio
what anatomical change is seen in pincer type deformity
acetabular overhang
what pathology do both types of FAI result in
damage and tears to the labrum, damage to the cartilage, OA later in life
what condition can CAM type impingement be associated with
previous slipped upper femoral epiphysis(SUFE)
what clinical features are seen in presentation of FAI
groin pain, difficulty sitting, C sign positive, FADIR provocation sign positive
describe the pain seen in FAI
activity related pain in the groin, particularly in flexion and rotation
what investigations are used for FAI
radiograph, CT, MRI(better for seeing labrum damage)
what management is used for asymptomatic FAI patients
observation
