The iliopsoas tendon begins to form at the pelvic brim where the iliacus and psoas major fibres converge, descending beneath the inguinal ligament through the lacuna musculorum. At this level the tendon is accessible for iliopsoas release in hip flexor contracture.
The iliopsoas tendon at the pelvic brim level is the target for endoscopic or arthroscopic iliopsoas release in internal snapping hip syndrome, where the tendon snaps over the iliopectineal eminence. Ultrasound-guided injection at this level (pelvic brim) targets the iliopsoas bursa and confirms whether pain is truly from the tendon-brim impingement. This is distinct from the lesser trochanter release used for hip flexion contracture.
Iliopsoas tendon snapping over the iliopectineal eminence at the pelvic brim producing an audible and palpable anterior groin snap during hip flexion-extension, managed by iliopsoas tendon lengthening at the brim or lesser trochanter level.
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