Hip Bone Marking The Anterior Superior Iliac Spine, Anterior View

Description

Anterior superior iliac spine (ASIS) anchors the anterolateral contour of the ilium at the anterior end of the iliac crest in this anterior view of the hip bone. From this fixed perspective, the iliac crest runs superiorly and posteriorly from the ASIS, while the anterior inferior iliac spine (AIIS) sits just inferior and slightly medial, separated by a subtle notch. Medially, the iliac fossa slopes toward the pelvic brim, and inferiorly the broad surface of the ilium transitions toward the acetabular region and the superior pubic ramus, establishing the bony framework of the anterior pelvis. A palpable landmark. Clinically, the ASIS is one of the most reliable surface anatomy reference points for pelvic orientation, leg-length assessment, and surgical planning, including anterior approaches to the hip and iliac crest bone graft harvesting. The illustration supports teaching of attachments that converge here: the inguinal ligament spans from ASIS toward the pubic tubercle, the sartorius arises from the ASIS, and the tensor fasciae latae originates just lateral to the crest, relationships that matter when evaluating apophysitis or avulsion fractures in adolescents and athletic adults. Its proximity to the lateral femoral cutaneous nerve as it passes near the ASIS also makes this landmark relevant in meralgia paresthetica and when placing incisions or retractors in the anterolateral groin. Use this illustration in gross anatomy labs, musculoskeletal radiology and orthopaedic teaching files, and rehabilitation texts that explain palpation-based alignment measures such as the ASIS-to-ASIS pelvic level and the ASIS-to-patella line for femoral rotation screening. It also fits procedural guides for femoral nerve blocks, pelvic external fixation landmarking, and safe zones for trocar placement where anterior pelvic bony points guide instrument trajectory. Anatomical accuracy verified by SciePro's Medical Advisory Board.