What is the role of gluteal tuberosity?

Function: Extends the hip, laterally rotates the femur at the hip joint, iliotibial band fibers abduct the femur at the hip while gluteal tuberosity fibers adduct it (Platzer 2004), posteriorly tilts the pelvis on the thigh when the leg is fixed, thereby indirectly assisting in trunk extension (Travell & Simons 1992).

What is the gluteal tuberosity of the femur?

The gluteal tuberosity is the lateral ridge above the linea aspera on the posterior surface of the femur. It is very rough surface. It runs almost vertically upward to the base of the greater trochanter. The gluteal tuberosity is the main site of insertion the gluteus maximus muscle.

What muscle inserts on the gluteal tuberosity?

The gluteus maximus has two insertion points: superficial fibers to the greater trochanter and a band of the fascia lata and the deep fibers that insert into the gluteal tuberosity between the adductor magus and vastus lateralis. It originates in the gluteal surface of the ilium.

What is the action of the gluteus maximus?

Gluteus maximus main actions are to extend and laterally rotate the hip joint. Furthermore, upper fibers can abduct the hip whereas the lower fibers can adduct.

What is the quadratus femoris?

The quadratus femoris is a flat, quadrilateral skeletal muscle. Located on the posterior side of the hip joint, it is a strong external rotator and adductor of the thigh, but also acts to stabilize the femoral head in the acetabulum.

What is gluteal tuberosity?

: the lateral ridge of the linea aspera of the femur that gives attachment to the gluteus maximus.

Where is Pectineal line of femur?

Intertrochanteric line – a ridge of bone that runs in an inferomedial direction on the anterior surface of the femur, spanning between the two trochanters. After it passes the lesser trochanter on the posterior surface, it is known as the pectineal line.

What is the largest muscle in the human body?

gluteus maximus
The gluteus maximus is the largest muscle in the human body. It is large and powerful because it has the job of keeping the trunk of the body in an erect posture. It is the chief antigravity muscle that aids in walking up stairs.

What is the strongest muscle in the human body?

masseter
The strongest muscle based on its weight is the masseter. With all muscles of the jaw working together it can close the teeth with a force as great as 55 pounds (25 kilograms) on the incisors or 200 pounds (90.7 kilograms) on the molars.

What is the biggest muscle in the human body?

The gluteus maximus is the largest muscle in the human body. It is large and powerful because it has the job of keeping the trunk of the body in an erect posture. It is the chief antigravity muscle that aids in walking up stairs. The hardest working muscle is the heart.

How do you treat quadratus femoris?

Treatment is conservative including avoiding exacerbating movements with optimizing biomechanics, including specific attention to the quadratus femoris muscle stretching and strengthening. Guided injection may be indicated for diagnostic and/or therapeutic pain relief.

Where is the gluteal tuberosity on the femur?

The muscle inserts on the fascia lata at the iliotibial band and the gluteal tuberosity on the femur. The muscle is innervated by the inferior gluteal nerve. The gluteus maximus muscle is susceptible to trauma and to wear and tear from overuse and misuse and may develop myofascial pain syndrome,…

How does the gluteus maximus cover the ischial tuberosity?

When standing, the gluteus maximus covers the ischial tuberosity but as the person sits, the muscle slides up to reveal the tuberosity and leave it free ( Platzer 2004 ). The tuberosity is therefore palpable in a seated posture.

Where does the gluteus maximus attach to the trochanter?

(Gluteal tuberosity not labeled, but visible at upper right, where attachment of Gluteus maximus is indicated.) The gluteal tuberosity is the lateral ridge of the linea aspera. It is very rough and runs almost vertically upward to the base of the greater trochanter.

Where are the bursae of the gluteus maximus?

Gluteus maximus covers (usually) three bursae: the trochanteric bursa, which lies between the gluteal tuberosity and the greater trochanter, the ischial bursa and the gluteofemoral bursa, which separates the vastus lateralis from gluteus maximus tendon (Travell & Simons 1992 ).