A person bends forward at the hips to tie his shoes. The acetabulum on the (R) side glides ____________________ on the head of the femur to allow this to happen
a. posteriorly and inferiorly
b. anteriorly and inferiorly
c. posteriorly and superiorly
d. anteriorly and superiorly
ANS: B
A person bending forward from the hips would be moving in a closed kinetic chain. This would mean that the concave acetabulum would be moving on the convex femoral head. In this relationship, the acetabulum would glide anterior and inferior on the femoral head.
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