Anatomy of the thigh muscles

The largest muscles of the thigh are those that extend it, and then there are the muscles that flex it, since the most important functions of the thigh muscles are these two movements. Extension is more important than flexion, because it is possible to stand only thanks to extension.

Then come the abductors, then the adductors, and then the rotators.

The hip extensor muscles include the largest muscle in the human body. This is a muscle that covers the pelvic bones and the thigh bone and wraps around the entire thigh from the inside and back, reaching to the knee.

The origin of the fibers of this muscle is located in different places, as a result of which its functions are divided into different categories.

Some fibers start from the lower bone of the pubis and extend the thigh, deflecting it inward, and since the point of origin of other fibers is slightly higher than this, they only lift the thigh upward. Other fibers start much higher, so they lift the thigh upward, deflecting the era inward. Since some fibers grow from the femur bone, they significantly extend the femur in a straight direction.

Another muscle covers the entire back of the hip joint. It has three heads and two ends. The heads start from the groins, from the thigh and from the coccyx: two of them are fleshy, one is membranous. As for the extremities, they are adjacent to the back of the femoral head. If the muscle pulls on one extremity, it extends the thigh, deflecting it towards this extremity, and if it pulls on both extremities, it extends the thigh in a straight direction.

Another muscle begins on the entire outer surface of the ilium and is adjacent to the upper part of a large process called the greater trochanter. She reaches forward a little and extends her hip inward.

Another muscle is similar to the previous one. It first adjoins the lower part of the lesser process, then descends and does its job, but only the extension it produces is small, and the deviation is significant. This muscle starts from the lower part of the outer side of the ilium.

Another muscle grows from the lower part of the femur, bending back; it extends the hip with a slight backward tilt, giving it a significant inward deviation.

As for the muscles that flex the hip joint, they include the muscle that flexes with a slight inward deviation; this is the rectus muscle, which descends from two places; one of them is adjacent to the end of the lumbar bones, the other - to the ilium. This muscle reaches the small internal process.

Another muscle comes from the pubis and is adjacent to the lower part of the lesser process. Another muscle stretches obliquely next to it and seems to be part of a larger muscle. The fourth muscle grows from the rising and projecting part of the ilium. As the hip flexes, it also pulls the lower leg.

As for the muscles that deviate the hip inward, some of them are mentioned in the section on extension and flexion. This type of movement is performed by a muscle that grows from the pubic bone and is very long, so that it reaches the very knee.

There are two muscles that deflect inward; one of them comes from the broad bone.

There are also two rotator muscles. The exit point of one of them is from the outside of the pubic bone, and the other comes from the inside of this bone. They run obliquely, meet and join at a depression near the end of the large process. When either one is alone, it rotates the hip and its side with slight extension.