Posterior View The Pectineal Line Of The Femur

Description

Pectineal line on the proximal femur is emphasized from a posterior perspective, beginning just inferior to the lesser trochanter and coursing distally as a rough longitudinal ridge toward the proximal linea aspera on the posterior shaft (diaphysis). Medially it lies near the transition from the posterior to the posteromedial surface, while laterally the trochanteric region and the beginning of the gluteal tuberosity sit closer to the lateral lip of the linea aspera. The ridge blends with adjacent longitudinal markings sometimes grouped as the spiral line, making the posterior proximal femur read as a continuous system of cortical buttresses. Orientation is unambiguous. Pectineus inserts along the pectineal line, so this specific ridge matters whenever you are teaching or documenting medial thigh mechanics, adductor compartment anatomy, or proximal femoral attachment sites in relation to the lesser trochanter and linea aspera. In hip surgery the posterior proximal femur is a working landscape for retractors and capsular exposure, and the pectineal line helps triangulate the posteromedial cortex when distinguishing the lesser trochanter region from the proximal shaft during arthroplasty templating or fracture fixation planning. The textured surface detail also supports discussion of enthesopathy at the pectineus insertion and the way traction lines can be appreciated on dry bone and high-resolution CT. Orthopaedic anatomy courses and operative technique manuals can pair this illustration with descriptions of proximal femur fractures (intertrochanteric and subtrochanteric) to clarify where muscle forces act on the posteromedial cortex. It also fits well in radiology teaching files when correlating posterior bony ridges with CT surface anatomy for preoperative planning. Anatomical accuracy verified by SciePro's Medical Advisory Board.