Femur Displaying The Quadrate Tubercle, Posterior View

Description

Quadrate tubercle on the proximal posterior femur is the focal landmark in this image, positioned on the intertrochanteric crest between the greater trochanter laterally and the lesser trochanter medially. Superior to it, the posterior aspect of the femoral neck meets the trochanteric region, while inferiorly the proximal shaft transitions toward the gluteal tuberosity and linea aspera. The bony elevation often blends into the adjacent linea quadrata, creating a short, roughened ridge that marks the insertional footprint of quadratus femoris. Orthopaedic and sports medicine teaching often glosses over this feature, yet it matters when you need to orient yourself on the posterior hip and proximal thigh. Quadratus femoris inserts on the quadrate tubercle and nearby intertrochanteric crest, and pathology at this myotendinous unit can be implicated in deep gluteal pain or in ischiofemoral impingement, where narrowing between the lesser trochanter and ischium can irritate the muscle; having the posterior bony landmarks isolated helps anchor that discussion in real anatomy. Surface texture on the crest and tubercle also supports surgical orientation in posterior and posterolateral approaches to the hip, where the relationship of the short external rotators to the trochanteric region guides safe dissection. Small landmark. Big payoff. Use this illustration in gross anatomy and musculoskeletal anatomy curricula when introducing the posterior proximal femur, the trochanters, and enthesis anatomy, or in orthopaedic and radiology publications to label the quadrate tubercle and linea quadrata when correlating with CT or MRI of the hip region. It also fits operative technique manuals that need a fixed posterior reference for the intertrochanteric crest and quadratus femoris insertion. Anatomical accuracy verified by SciePro's Medical Advisory Board.