Femoris Long Head, Posterior View

Description

Posteriorly oriented, the illustration centers on the biceps femoris long head (caput longum musculi bicipitis femoris) along the posterolateral thigh of an adult female. Its proximal attachment is indicated at the ischial tuberosity, lying medial to the greater trochanter and inferior to the gluteus maximus, then running distally as a superficial hamstring belly lateral to semitendinosus and semimembranosus. At the knee, the muscle mass narrows toward its tendon, which courses to the lateral side of the joint toward the fibular head, adjacent to the short head contribution and the lateral gastrocnemius. Orientation is clear. Clinically, this view matters because the long head crosses both hip and knee, making it the hamstring component most often involved in sprinting-related strains at the proximal myotendinous junction and in proximal avulsion injuries from the ischial tuberosity. The posterolateral course also frames key relationships at the knee: the common fibular (peroneal) nerve wraps around the fibular neck just distal to the biceps femoris insertion, and the tendon forms a palpable border of the popliteal fossa that guides examination of posterolateral corner injuries and lateral collateral ligament assessment. For surgical planning, it clarifies where a posterior thigh incision risks the sciatic nerve as it descends deep to the hamstrings. Use this artwork in gross anatomy and kinesiology teaching to distinguish hamstrings from the quadriceps group, or in sports medicine content on hamstring strain grading, proximal repair, and rehabilitation timelines. It also suits patient-facing materials explaining posterior thigh pain patterns and referral zones while preserving formal Terminologia Anatomica nomenclature. Anatomical accuracy verified by SciePro's Medical Advisory Board.