ial ▁rotation ". ▁H ip ▁ab du ction ▁occurs ▁when ▁the ▁fem ur ▁moves ▁out ward ▁to ▁the ▁side , ▁as ▁in ▁taking ▁the ▁th igh s ▁apart . ▁H ip ▁ad du ction ▁occurs ▁when ▁the ▁fem ur ▁moves ▁back ▁to ▁the ▁mid line . ▁Many ▁mus cles ▁contribute ▁to ▁these ▁movements : ▁▁▁ ▁The ▁p so as ▁is ▁the ▁primary ▁hip ▁flex or , ▁assist ed ▁by ▁the ▁il ia cus . ▁The ▁p ect ine us , ▁the ▁ad duct ors ▁long us , ▁bre vis , ▁and ▁magn us , ▁as ▁well ▁as ▁the ▁tensor ▁fas cia e ▁l ata e ▁are ▁also ▁involved ▁in ▁flex ion . ▁ ▁The ▁gl ute us ▁maxim us ▁is ▁the ▁main ▁hip ▁ext ensor , ▁but ▁the ▁inferior ▁portion ▁of ▁the ▁ad duct or ▁magn us ▁also ▁plays ▁a ▁role . ▁ ▁The ▁ad duct or ▁group ▁is ▁responsible ▁for ▁hip ▁ad du ction . ▁▁ ▁Med ial ▁rotation ▁is ▁performed ▁by ▁the ▁gl ute us ▁med ius ▁and ▁gl ute us ▁minim us , ▁as ▁well ▁as ▁the ▁tensor ▁fas cia e ▁l ata e ▁and ▁assist ed ▁by ▁the ▁ad duct ors ▁bre vis ▁and ▁long us ▁and ▁the ▁superior ▁portion ▁of ▁the ▁ad duct or ▁magn us . ▁ ▁Each ▁mus cle ▁of ▁the ▁later al ▁rot ator ▁group ▁causes ▁later al ▁rotation ▁of ▁the ▁th igh . ▁These ▁mus cles ▁are ▁a ided ▁by ▁the ▁gl ute us ▁maxim us ▁and ▁the ▁inferior ▁portion ▁of ▁the ▁ad duct