Bring the leg over the edge and let it fall towards the floor. Someone can hold the hip so that it does not rotate the pelvis when the leg drops. May sure you check involved side SI, especially in gravid mom's. CAT 2, SOT Traction the lumbosacral joint either putting her up on blocks or raising the bottom of your table up to get her belly out of the way, then traction sup to inf. on sacral base. Don't forget Quadratus lumborum mm.
Patient is prone.
The practitioner supports the patient's thigh just above the knee with one hand and the patient's leg somewhere above the ankle on the shin with their other hand. The entire extremity is then slowly abducted. Short of the patient's full capacity to abduct, the practitioner then very gently externally rotates the whole extremity at the hip, giving particular attention to 'shortening' the piriformis. The leg can be held in this abducted and externally rotated position for a fifteen to twenty second period and then returned to the table by reversing the motion, ie. This cycle is repeated several times until the muscle tightness is reduced.