Hamstring Strain Essay

933 Words4 Pages
The hamstrings are tendons that attach three large muscles at the back of the thigh to the bone. Also known as the posterior thigh muscles\ are made up of three large muscles, the Semitendinosus, Semimembranosus, and Bicep Femoris. The Semitedinosus begins at the Ischial Tuberosity and is inserted at the medial surface of the Tibia (-------------). The Semimembranosus origin is located on the Ischial Tuberosity and is inserted on the medial tibial condyle. As for the Bicep Femoris, there are two sections to this muscle. The Bicep Femoris long head which begins on the Ischial tuberosity as well, is inserted to the lateral side fibula head, and Bicep femoris short head which begins on the lateral lip of the Linea Aspera, and is inserted on the lateral side of the fibula head (----------------). The function of the hamstrings is very simple. When walking, the hamstrings are the agonist muscles, when the Quadriceps is the antagonist muscles. In a more detailed way, the hamstrings cross and act upon two joints, the hip and knee (--------------). The Semitendinosus and the Semimembranosus extend the hip when the trunk is fixed. The two muscles also bend the knee and rotate the lower leg when the knee is bent. As for the Bicep Femoris, a good example to explain its function is when an individual is walking. The long head of the bicep femoris ends the hip as we begin to walk. In the initial movement, the long and short bicep Femoris both flex the knee and laterally rotates the lower leg when the knee is bent ----------------------). Everyone is vulnerable to hamstring injury since our hamstrings are crucial for everyday use. One common cause for a hamstring strain is simply muscle overload. This occurs when the individuals muscles is stretched beyond its capacity or suddenly challenged with a sudden or large load. For instance, when an individual
Open Document