The right femur displayed a transverse cut mark running across the anteromedial surface of the neck, which is likely to have been undertaken for the purpose of disconnecting the ischiofemoral
ligament to enable the head of the femur to be pulled out of the acetabulum.
4,5) The causes of EHI have been further classified into specific conditions: central iliopsoas impingement, subspine impingement, ischiofemoral impingement, and greater trochanteric-pelvic impinge ment.
Ischiofemoral impingement (IFI) is characterized by a narrowed space between the ischial tuberosity and the lesser trochanter resulting in repetitive impingement of the quadratus femoris muscle (Figure 4).
5) The research suggests that ischiofemoral impingement is more prevalent in females versus males and older individuals (mean age of 51-53 years, pooled age range 14-77 years).
Moreover, recent reports have shown atypical forms of hip impingement such as subspine impingement, ischiofemoral
impingement, iliopsoas impingement, abnormal femoral antetorsion, and abnormal pelvic tilt [12, 13].
10,13) Recent studies have identified a type of ischiofemoral impingement where QF is reportedly compressed between the ischium-hamstring tendon origin and the lesser trochanter.
Ischiofemoral impingement: hip pain of infrequent cause.
ligament, which attaches to the ischium (the lowest part of the pelvis) and between the two trochanters.
Another limb-sparing procedure is iliofemoral or ischiofemoral
TABLE 1 Types of resection with methods of reconstruction (3) Resection Limb sparing type surgery (41) Amputation (8) Reconstruction (19) T1 7 1 free vascularised fibular graft 1 pelvic reconstruction with bone cement T1/2 4 3 ischiofemoral
pseudarthrodesis T2 0 2 pelvic allograft with hip arthroplasty T2/H1 3 1 saddle prosthesis 8 saddle prosthesis T2/3 9 8 1 pelvic allograft with hip arthroplasty T3 3 T4 9 T1/4 6 1 free vascularised femoral graft 1 ischiofemoral
pseudarthrosis Pelvic resections are classified by Enneking and Dunham (2) into four types: iliac (T1), acetabular (T2), pubis or ischium (T3) and sacral (T4).
The position of the cut marks on the femoral necks is classic for release of the iliofemoral (anterior) and the ischiofemoral
The articular capsule of the hip joint is a fibrous collagenous structure that encircles the proximal femur and acetabulum and is reinforced by capsular ligaments (iliofemoral, pubofemoral, and ischiofemoral