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2 Αυγ 2023 · Semimembranosus is a relatively large muscle that originates from a small facet on the rough superolateral surface of the ischial tuberosity. The tendon of semimembranosus appears at the level of the mid-thigh and continues caudally toward the point of insertion at the medial condyle of the tibia.
The semimembranosus muscle (/ ˌsɛmiˌmɛmbrəˈnoʊsəs /) is the most medial of the three hamstring muscles in the thigh. It is so named because it has a flat tendon of origin. It lies posteromedially in the thigh, deep to the semitendinosus muscle. It extends the hip joint and flexes the knee joint.
22 Μαρ 2024 · The semimembranosus muscle starts with a thick, fleshy upper portion and transitions into a broad, flat tendon as it approaches the knee. This structure is why it’s termed “semimembranosus,” as it has a membranous appearance towards its insertion.
24 Οκτ 2022 · The semimembranosus is a muscle within the posterior compartment of the thigh. It is located deep to the semitendinosus muscle within the medial aspect of the posterior thigh. Attachments: Originates from the ischial tuberosity (more superiorly than the origin of the semitendinosus and biceps femoris). Attaches to the medial tibial condyle.
The semimembranosus muscle is found in the posterior compartment of the thigh. It is a long, unipennate type of skeletal muscle. It is located: - anterior to the semitendinosus muscle; - posterior to the adductor magnus muscle; - medial to the long head of biceps femoris muscle, the sciatic nerve, and the semimembranosus bursa;
The direct arm attaches in a groove at the posteromedial aspect of the tibia; The anterior arm courses more anteriorly and attaches to the tibia deep to the medial collateral ligament. A broad component extends into the oblique popliteal ligament, which courses along the posterior capsule of the knee.
The semimembranosus muscle acts on both the hip and the knee joint in the same way as the other two muscles of the posterior compartment of the thigh. It's also an antagonist of the quadriceps femoris .
