femoroacetabular impingement syndrome

Question 1

how does this occur

Answer 1

due to the hip blnes not forming properly during movement

Question 2

what is FAI

Answer 2

aletered formation of femoral neck/ acetabular

Question 3

what is the acetabullum

Answer 3

socket of the hip ball and socket joint

Question 4

CAM type impingement

Answer 4

• The femoral head is not round and cannot rotate smoothly inside the acetabulum
• A bump forms on the edge of the femoral head that grinds the cartilage inside the acetabulum
• Usually young athletic males
• Can be related to previous SUFE

Question 5

pincer type impingement

Answer 5

• Occurs because extra bone extends out over the normal rim of the acetabulum
• The labrum can be crushed under the prominent rim of the acetabulum
• Usually seen in females

Question 6

who is CAM usually seen in

Answer 6

young athletic males

Question 7

who is pincer seen in

Answer 7

females

Question 8

what are the consequences of FAI

Answer 8

damage to labrum and tears
damage to cartilage
osteoarthritis laer in life

Question 9

patient presentation

Answer 9

acitivity related pain in the groin particularly in flexion and rotation
difficulty sitting
c sign positive

Question 10

what test is best for visualising damage to labrum and bony oedema

Answer 10

MRI

Question 11

management

Answer 11

• Observation in asymptomatic patients
• Try conservative measures before surgery
• Arthroscopic/open surgery to remove CAM/debride labral tears
• Peri-acetabular osteotomy/debride labral tears in pincer impingement
• Arthroplasty/total hip replacement in older patients with secondary OA