posterior leg
semimembranosus
The semimembranosus muscle is one of the three muscles that make up the hamstring. It is found on the back of the thigh and runs from the base of the pelvis (specifically the tuberosity of the ischium) to the back of the tibia, one of the bones that make up the lower leg. The semimembranosus muscle is attached to the pelvis and tibia.The muscle has several functions, including enabling the leg to flex and rotate, and serving as a thigh extensor. The other two muscles that make up the hamstring are the semitendinosus and biceps femoris muscles.
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semitendinosus
The semitendinosus muscle is one of three hamstring muscles that are located at the back of the thigh. The other two are the semimembranosus muscle and the biceps femoris. The semitendinosus muscle lies between the other two. These three muscles work collectively to flex the knee and extend the hip.The semitendinosus muscle begins at the inner surface of the base of the pelvis (known as the tuberosity of the ischium) and the sacrotuberous ligament. It inserts at the medial tibial condyle.
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biceps femoris
The biceps femoris is a double-headed muscle located on the back of thigh. It consists of two parts: the long head, attached to the ischium (the lower and back part of the hip bone), and the short head, which is attached to the femur bone.The long head is a part of the hamstring muscle group that occupies the posterior section of the thigh. The hamstring muscles may be considered extensors of the thigh. The biceps femoris muscle is important for knee flexion, internal and external rotation, and hip extension.
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patella quadricep tendon
Quadriceps tendinitis (also spelled tendonitis) is a painful condition affecting the quadriceps tendon above the patella (kneecap). The quadriceps group of muscle (individually called the vastus lateralis, vastus intermedius, vastus medialis and the overlying rectus femoris) is the largest in the front of the thigh and is very important for stabilizing the leg. The quadriceps tendon connects the quadriceps to the tibia (shins) via the patellar tendon, which surrounds the knee cap itself. The movement of the knee known as the quadriceps mechanism involves the patella (knee cap), the patella tendon, the quadriceps and its tendon. They all work together to extend the leg to straight.
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hamstring tendon
Hamstring tendonitis occurs when the soft tissues that connect the muscles of the back thigh to the pelvis, knee, and lower legs become inflamed. Tendonitis is often brought on by overuse and causes acute, or immediate, pain that decreases with rest and minor first aid. Most people can return to regular activity after a week or so. Full recovery typically involves rehabilitative exercises and takes several weeks.
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iliotibial band
The iliotibial tract or iliotibial band (IT band) is a longitudinal fibrous reinforcement of the fascia lata. The action of the ITB and its associated muscles is to extend, abduct, and laterally rotate the hip. In addition, the ITB contributes to lateral knee stabilization.
