Lateral rotator group

Lateral rotator group
The obturator externus and nearby muscles
Structures surrounding right hip-joint.
Gray's	subject #128 476
Origin	at or below the acetabulum of the ilium
Insertion	on or near the greater trochanter of the femur
Artery	Inferior gluteal artery, Lateral sacral artery, Superior gluteal artery
Nerve	Obturator nerve, nerve to the Piriformis, nerve to quadratus femoris
Actions	lateral rotation of hip
Antagonist	Gluteus minimus muscle, Gluteus medius muscle

The Lateral rotator group are a group of muscles of the hip which all externally (laterally) rotate the femur in the hip joint. It consists of the following muscles:

• piriformis
• gemellus superior
• obturator internus
• gemellus inferior
• obturator externus
• quadratus femoris

A tip to remember the order of the lateral rotator muscles from superior to inferior is; PGOGOQ

Other lateral rotators

This group does not include all muscles which aid in lateral rotation of the hip joint: rather it is a collection of ones which are known for primarily performing this action. Other muscles that contribute to lateral rotation of the hip include:

• Gluteus maximus muscle (lower fibres)
• Gluteus medius muscle and gluteus minimus muscle when the hip is flexed (become medial rotators when hip is extended)
• Psoas major muscle
• Psoas minor muscle
• Sartorius muscle

See also

• hip (anatomy)
• lateral rotation

Also the anatomical position is pronation.

External links

• glutealregion at The Anatomy Lesson by Wesley Norman (Georgetown University)