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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.
22 Μαρ 2024 · The semimembranosus muscle, as part of the hamstring group, has several important functions related to movement and stabilization of the lower limb: Hip Extension: The semimembranosus aids in extending the hip joint, which involves moving the thigh backward. This action is crucial for activities such as walking, running, and climbing stairs.
7 Νοε 2022 · Interactive 3D model of the semimembranosus muscle and information on its origin, insertion, action, innervation, and blood supply.
24 Οκτ 2022 · Actions: Flexion of the leg at the knee joint. Extension of thigh at the hip. Medially rotates the thigh at the hip joint and the leg at the knee joint. Innervation: Tibial part of the sciatic nerve. Blood Supply: Profunda femoris artery. Fig 1. The muscles of the posterior thigh. Fig 2.
The semimembranosus acts synergistically with the popliteus muscle through the fibrous extension towards this muscle. The distal semimembranosus complex actively pulls the posterior horn of the medial meniscus, protecting it from being crushed between the medial femoral condyle and the posterior medial tibial plateau during knee flexion.
2 Οκτ 2024 · For example, performing: Deadlifts. Romanian deadlifts. Hip thrust. Additionally, when the knee is flexed, the semimembranosus aids in the internal rotation of the leg, which improves overall leg stability, especially during dynamic movements.
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. Let's start by looking at the action of the semimembranosus at the hip joint. The contraction of the muscle acts to extend the thigh which is ...
