The hip muscles are composed of three groups that are on the back of the thighs, on the backside and on the sides of the hips and thighs. These muscles are responsible for allowing the hips and legs to move in four different anatomical modes. These movements are to bend, stretch, move the legs in a direction opposite to the body and bring the legs towards the body. The ligaments are integral for the mobility of the joints.
The gluteal muscles consist of the gluteus maximus, gluteus medius and gluteus minimus. The gluteus maximus is the largest muscle in the body and is responsible for the extension of the hips. These muscles move the hips backwards. The gluteus medius and the gluteus minimus allow the abduction of the hips, which is to move the hips and legs away from the body. The gluteus medius is below the gluteus maximus and allows the legs to move sideways and outwards.
The muscles of the hamstrings at the back of the hips extend into the area of the thighs. They start behind the gluteus maximus. They are known as femoral biceps, semitendinous muscles and semimembranous muscles. These muscles provide the movement to flex the knees and extend the hips, which is to bring the hips towards the body and bend the knee so that the foot reaches the back.
The quadriceps are in the front of the thighs and hips. They are the vast lateral, the rectus femoris, the vast medial and the vast intermediate. The quadriceps represents approximately 70 percent of the thigh muscle mass. These muscles are responsible for extending the leg to the level of the knee, as when you run and jump.
The piriformis muscle lies in front of the sacrum and lies parallel to the lower part of the gluteus maximus. This muscle is responsible for the lateral rotation of the hips. The sciatic nerve lies beneath this muscle and sometimes passes through it.
Ligaments are the structures that bind bones together. The ligaments of the hips are called iliofemoral, which are the strongest ligaments in the body, ischiofemoral and pubofemoral. They are located in the joints of the bones and are composed of fibrous collagen. Its function is to stabilize the joints and contribute to make various movements. The arteries traverse the ligaments to the bone, providing nourishing blood.