The Lateral rotator group are a group of muscles of the hip

Muscles of the hip

In human anatomy, the muscles of the hip joint are those muscles that cause movement in the hip. Most modern anatomists define 17 of these muscles, although some additional muscles may sometimes be considered...

 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
  Gluteus maximus muscle
  The gluteus maximus is the largest and most superficial of the three gluteal muscles...
  
   (lower fibres)
• Gluteus medius muscle
  Gluteus medius muscle
  The gluteus medius , one of the three gluteal muscles, is a broad, thick, radiating muscle, situated on the outer surface of the pelvis....
  
   and gluteus minimus muscle
  Gluteus minimus muscle
  The gluteus minimus , the smallest of the three gluteal muscles, is situated immediately beneath the gluteus medius.-Origin and insertion:...
  
   when the hip is flexed (become medial rotators when hip is extended)
• Psoas major muscle
  Psoas major muscle
  -External links: - "Posterior Abdominal Wall: Muscles of the Posterior Abdominal Wall"* *...
  
  
• Psoas minor muscle
  Psoas minor muscle
  The psoas minor is a long, slender skeletal muscle which, when present, is located in front of the psoas major muscle. This muscle does not exist in about half the human population.-Course:...
  
  
• Sartorius muscle
  Sartorius muscle
  The Sartorius muscle – the longest muscle in the human body – is a long thin muscle that runs down the length of the thigh. Its upper portion forms the lateral border of the femoral triangle.-Origin and insertion:...