Question

open chain hip extension causes which of the following?
a) posterior pelvic tilt
b) pelvic abduction
c) anterior pelvic tilt
d) pelvic adduction

Explanation:

Open - chain hip extension involves the movement of the thigh relative to the pelvis. When the hip is extended in an open - chain (where the distal segment, like the foot, is free to move), the hamstrings and gluteus maximus are the primary muscles. The action of these muscles during hip extension in an open - chain can cause a posterior pelvic tilt. Posterior pelvic tilt is a movement where the top of the pelvis tilts backward. Pelvic abduction (movement of the pelvis away from the midline) and adduction (movement of the pelvis towards the midline) are not directly related to hip extension. Anterior pelvic tilt (top of the pelvis tilts forward) is more associated with hip flexion - related muscle imbalances or different movements.

Answer:

a) Posterior pelvic tilt