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Gluteal muscles, commonly referred to as glutes, are a group of three muscles that make up the gluteal region, or the buttocks. These muscles include the gluteus maximus, gluteus medius, and gluteus minimus. The gluteus maximus is the largest and strongest muscle in the human body, while the gluteus minimus is the smallest of the three. These muscles help stabilise the upper body and pelvis, aid in locomotion, and extend the hip. They also help with various functions such as sitting, standing, walking, running, and jumping.
| Characteristics | Values |
|---|---|
| Number of muscles | 3 |
| Names of muscles | Gluteus Maximus, Gluteus Medius, Gluteus Minimus |
| Largest muscle | Gluteus Maximus |
| Smallest muscle | Gluteus Minimus |
| Muscle with the most power | Gluteus Maximus |
| Muscle with the most superficial | Gluteus Maximus |
| Muscle with the most depth | Gluteus Minimus |
| Muscle that provides stability to the pelvis | Gluteus Minimus |
| Muscle that controls the trunk position | Gluteus Maximus |
| Muscle that abducts the thigh | Tensor Fasciae Latae |
| Muscle that acts as a hip extensor | Gluteus Maximus |
| Muscle that laterally rotates the femur | Gluteus Maximus |
| Muscle that helps in running | Gluteus Maximus |
| Muscle that helps in jumping | Gluteus Minimus |
| Muscle that helps in walking | Gluteus Maximus |
| Muscle that helps in sitting | Gluteus Minimus |
| Muscle that helps in standing | Gluteus Minimus |
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What You'll Learn
The gluteal region
The gluteus medius is a large, fan-shaped muscle situated on the outer surface of the pelvis. It lies between the gluteus maximus and the gluteus minimus. The gluteus medius originates from the back of the pelvis and inserts on the top of the femur. It functions to abduct and internally rotate the thigh at the hip joint. The gluteus minimus is the smallest and deepest of the three gluteal muscles. It is triangular in shape and is located just underneath the gluteus medius. The gluteus minimus originates on the pelvis and inserts on the top of the femur at the hip joint. It works together with the gluteus medius to abduct and internally rotate the thigh and stabilise the pelvis.
In addition to the three main gluteal muscles, there are also small, deep muscles in the gluteal region called the "deep lateral rotators" or "deep six muscles". These muscles include the piriformis, gemellus superior, gemellus inferior, quadratus femoris, and obturator internus. They act to laterally rotate the femur and provide stability to the ball-and-socket joint of the hip.
The gluteal muscles are important for various functions such as sitting, standing, walking, running, and jumping. They also help to aid injury prevention and maintain an upright erect posture. Weak gluteal muscles have been associated with a variety of lower limb issues, and exercises to strengthen the gluteal muscles can help to improve low back pain and disability.
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The three gluteal muscles
The gluteal muscles, often referred to as the glutes, are a group of three muscles that make up the gluteal region, commonly known as the buttocks. The three muscles are the gluteus maximus, gluteus medius, and gluteus minimus. These muscles originate from the ilium and sacrum and insert into the femur. They are responsible for the extension, abduction, external rotation, and internal rotation of the hip joint.
The gluteus maximus is the largest and most superficial of the three gluteal muscles. It contributes significantly to the shape and appearance of the hips and buttocks. It arises from the posterior gluteal line of the inner upper ilium, the rough portion of bone, the posterior surface of the lower part of the sacrum, and the side of the coccyx. The gluteus maximus has two insertions. The first involves the upper and larger portion of the muscle, along with the superficial fibres of the lower portion, ending in a thick tendinous lamina that passes across the greater trochanter and inserts into the iliotibial band of the fascia lata. The second insertion involves the deeper fibres of the lower portion of the muscle, which insert into the gluteal tuberosity between the vastus lateralis and adductor magnus. The gluteus maximus is the main extensor of the thigh, assisting with lateral rotation. It is also crucial for stabilising the trunk during rapid movements.
The gluteus medius is a broad, thick, radiating muscle situated on the outer surface of the pelvis. It lies beneath the gluteus maximus, with its posterior third covered by the gluteus maximus and its anterior two-thirds covered by the gluteal aponeurosis. The gluteus medius muscle originates on the outer surface of the ilium, between the iliac crest and the posterior gluteal line above, and the anterior gluteal line below. The fibres of the gluteus medius converge into a strong, flattened tendon that inserts onto the lateral surface of the greater trochanter. The gluteus medius is important for stabilising the pelvis during locomotion.
The gluteus minimus is the smallest and deepest of the three gluteal muscles. It is situated immediately beneath the gluteus medius. The gluteus minimus is fan-shaped and originates from the outer surface of the ilium, between the anterior and inferior gluteal lines, and from the margin of the greater sciatic notch. The gluteus minimus converges to form a tendon, inserting onto the anterior side of the greater trochanter. Similar to the gluteus medius, the gluteus minimus also plays a role in stabilising the pelvis during movement.
The gluteal muscles can be categorised into two groups: the superficial abductors and extensors, and the deep lateral rotators. The superficial group includes the three gluteal muscles and the tensor fascia lata, and they are responsible for abducting and extending the lower limb at the hip joint. The deep lateral rotators are a group of smaller muscles that laterally rotate the femur and provide stability to the hip joint.
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The functions of the gluteal muscles
The gluteal muscles, commonly referred to as the glutes, are a group of three muscles that make up the gluteal region, otherwise known as the buttocks. The three muscles are the gluteus maximus, gluteus medius, and gluteus minimus. The gluteal muscles act on the hip joint, facilitating abduction and extension of the thigh, as well as assisting in adduction, external rotation, and internal rotation of the thigh.
The gluteus maximus is the largest and most superficial of the three gluteal muscles, providing the majority of the shape to the buttock region. It originates from the gluteal (posterior) surface of the ilium, sacrum, and coccyx. Its muscle fibres converge and insert onto the iliotibial tract and gluteal tuberosity of the femur. The gluteus maximus is the main extensor of the thigh, aiding in lateral rotation, and is used during activities that require force, such as running or climbing. It also supports the extended knee through the iliotibial tract and helps control trunk flexion during running.
The gluteus medius is a broad, thick, radiating muscle situated on the outer surface of the pelvis. It lies beneath the gluteus maximus and above the gluteus minimus. The gluteus medius originates from the outer surface of the ilium and inserts onto the lateral side of the greater trochanter of the femur. The function of the gluteus medius is to abduct and internally rotate the thigh at the hip joint. It also contributes to the stabilisation of the pelvis and trunk during locomotion.
The gluteus minimus is the smallest and deepest of the gluteal muscles. It is similar in shape and function to the gluteus medius. The gluteus minimus originates from the ilium and inserts onto the greater trochanter of the femur. It acts to abduct and medially rotate the lower limb, contributing to the stabilisation of the pelvis during locomotion.
In addition to these three main gluteal muscles, there are also smaller, deep muscles in the gluteal region known as the "deep lateral rotators" or "deep six muscles". These include the piriformis, gemellus superior, gemellus inferior, quadratus femoris, and obturator internus. These muscles act to laterally rotate the femur and provide stability to the ball-and-socket joint of the hip.
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The innervation of the gluteal muscles
The gluteal muscles, often referred to as the glutes, are a group of three muscles that make up the gluteal region, commonly known as the buttocks. The three muscles are the gluteus maximus, gluteus medius, and gluteus minimus. The gluteus maximus is the largest and strongest muscle in the human body. It is the most superficial muscle of the three gluteal muscles, producing the shape of the buttocks. The gluteus medius is a broad, thick, radiating muscle situated on the outer surface of the pelvis. The gluteus minimus is the smallest of the three gluteal muscles and is fan-shaped. It is situated immediately beneath the gluteus medius.
The gluteal muscles are innervated by the superior and inferior gluteal nerves. The superior gluteal nerve is a motor branch of the sacral plexus that arises from the posterior divisions of the L4, L5, and S1 anterior roots. It passes through the greater sciatic foramen and accompanies the superior gluteal artery and vein. The superior gluteal nerve innervates the gluteus medius, gluteus minimus, and tensor fasciae latae muscles. It is responsible for stabilising the pelvis during locomotion. Damage to this nerve can result in paralysis of the gluteus medius muscle, leading to a characteristic gait known as the Trendelenburg gait.
The inferior gluteal nerve is also a motor branch of the sacral plexus, arising from the posterior divisions of the L5, S1, and S2 anterior roots. It exits the pelvic cavity through the greater sciatic foramen and passes inferiorly to the piriformis muscle. The inferior gluteal nerve provides motor innervation to the gluteus maximus muscle.
In addition to the gluteal nerves, the obturator internus muscle in the gluteal region is innervated by the nerve to obturator internus, while the piriformis muscle is innervated by the nerve to piriformis.
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The arterial supply to the gluteal muscles
The gluteal muscles, commonly known as the buttocks, are made up of three muscles: the gluteus maximus, gluteus medius, and gluteus minimus. These muscles are responsible for movements of the lower limb at the hip joint, including extension, abduction, external rotation, and internal rotation. The arterial supply to the gluteal muscles is primarily through the superior gluteal artery and inferior gluteal artery, which are branches of the internal iliac artery.
The superior gluteal artery is the largest and final branch of the internal iliac artery, arising from its posterior division. It passes posteriorly between the lumbosacral trunk and the first sacral nerve. Within the pelvis, it supplies the iliacus, piriformis, and obturator internus muscles. As it exits the pelvis through the greater sciatic foramen, it divides into two branches: the superficial branch and the deep branch. The superficial branch travels between the gluteus medius and gluteus maximus muscles, while the deep branch supplies the gluteus medius, gluteus minimus, and tensor fasciae latae muscles.
The superficial branch of the superior gluteal artery provides blood supply to the gluteus maximus muscle by forming anastomoses with the branches of the inferior gluteal artery. It also supplies the skin over the sacrum. The deep branch of the superior gluteal artery supplies the gluteus minimus and tensor fasciae latae muscles, as well as the hip joint. It anastomoses with other arteries in the region, including the lateral circumflex femoral artery and the deep iliac circumflex artery.
The inferior gluteal artery originates from the anterior division of the internal iliac artery. It supplies blood to the gluteus maximus, piriformis, internal obturator, gemellus superior and inferior, and quadratus femoris muscles. The inferior gluteal artery also contributes to the blood supply of the gluteus maximus muscle by forming anastomoses with the branches of the superior gluteal artery.
Overall, the arterial supply to the gluteal muscles is crucial for maintaining proper blood flow to these muscles and ensuring their optimal function in movements of the hip and lower limb.
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Frequently asked questions
Glute muscles, or gluteals, are a group of three muscles that make up the gluteal region, commonly known as the buttocks.
The three glute muscles are the gluteus maximus, gluteus medius, and gluteus minimus.
The gluteus maximus is the largest glute muscle and also the largest muscle in the human body. It provides the majority of the shape to the buttock region.
The gluteus minimus is the smallest and deepest of the gluteal muscles. It is situated immediately beneath the gluteus medius.
The gluteal muscles help with functions such as sitting, standing, walking, running, and jumping. They also aid in injury prevention and help maintain an upright posture.
