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Posted: 2/21/2022
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Anatomy Of The Semimembranosus Muscle - Everything You Need To Know - Dr. Nabil Ebraheim

Video Description

Dr. Ebraheim’s educational animated video describes the anatomy of the semimembranosus muscle.

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Anatomy of the semimembranosus. Muscle the hamstrings are three muscles. The three are the semimembranosus, the semitendinosus, and the biceps femoris. Semimembranosus origin that arises from the upper lateral part of the ischial tuberosity. Here is drawing that shows the muscles arises from the ischium. Here is the origin of the semimembranosus. The semimembranosus is different from the semitendinosus. Insertion, the semimembranosus is inserted into the back of the posterior surface of the medial tibial condyle. The nerve supply to the semimembranosus muscle comes from the tibial branch of the sciatic nerve. The semimembranosus helps in flexion of the knee, extension of the hip, medial rotation of the tibia. There are two important things related to the semimembranosus. Number one is the Baker's Cyst. The cyst is located between the semimembranosus and the medial gastrocnemius muscle. A Baker's Cyst is commonly caused by knee arthritis or meniscal tear. The cyst is connected to the knee joint through a valvular opening. Knee effusion from the intra-articular pathology allows the fluid to go through the valve to the cyst in one direction. You approach this posteromedial fracture fragment of the tibial plateau through an incision between the medial gastrocnemius and semimembranosus muscles. This Fragment has its own fixation (antiglide plate) to buttress this fracture fragment.





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