Ischiofemoral Ligament

Description

Oriented from an oblique posterolateral angle, the pelvis and proximal femora are shown with the hip joint capsule opened to highlight the ischiofemoral ligament on a male specimen. Fibers arise from the ischial portion of the acetabular rim and adjacent ischium, then spiral superolaterally across the posterior capsule to blend with the zona orbicularis and the anterior aspect of the femoral neck near the greater trochanter. The acetabulum, femoral head, and neck sit lateral to the pelvic midline, while the lumbar vertebrae and sacrum remain superior and posterior as bony landmarks anchoring orientation. Capsular geometry is the story here. That spiral fiber direction explains function better than any text: as the hip moves into extension, the ischiofemoral ligament winds tighter and limits hyperextension and excessive external rotation, stabilizing the femoral head within the acetabulum. Clinically, this is the capsular structure most relevant to posterior capsulotomy and repair in hip arthroplasty, where inadequate restoration can contribute to posterior instability and dislocation risk. It also frames how posterior hip pain syndromes are assessed when external rotation in extension provokes symptoms, and it helps clarify why capsular laxity patterns differ between anterior and posterior restraint systems. Use this artwork in gross anatomy teaching on the hip capsule, in orthopaedic and sports medicine slide decks explaining capsular restraints, or in surgical education materials comparing posterior versus anterolateral approaches to the hip joint. It also fits well in textbooks or journal figures discussing ligamentous contributions to hip stability, femoroacetabular kinematics, and capsular management in total hip arthroplasty. Anatomical accuracy verified by SciePro's Medical Advisory Board.