The study demonstrated that four sessions of MFR of the lower limb can induce an improvement in the isolated external hip joint rotation. The authors hypothesized that the improvement in the hip joint’s ROM was due to reduced myofascial stiffness after the MFR treatments.
The authors concluded that decreased hip ROM in professional soccer players is associated with more hip pain and groin pain and is associated with previous injuries, independent of the presence of a cam deformity.
The function of the psoas major has been claimed to be both medial rotation and lateral rotation. However, most sources agree that it is a lateral rotator.