Question

3) Determine which of the following positions have the greatest amount of active hip flexion available?

a) Hip Flexion with the knee in a flexed position.

b) Hip flexion with the knee in a fully extended position.

c) Which scenario resulted in less range of motion?

Explain your answer in terms of:

1) Active insufficiency.

2) Passive insufficiency.

Answer 1

Hamstring is a muscle which runs through both Hip and Knee Joint.

Hamstrings are tight to stretch when the knee is in extended position whereas the muscles are relaxed when the knee is flexed.

Therefore greater amount of hip flexion is noticed when the knee is extended and less range of hip flexion is noticed with knee flexed because of the stretch in the muscle.

Active Insufficiency

When a muscle crosses two or more joints causing simultaneous movement at all of the joints which it crosses goes to a length of which it can no longer generate a useful amount of tension which is the muscle cannot shorten beyond a certain point without loosing tension is termed as Active Insufficiency.

Passive Insufficiency

When a muscle crosses any joint or joints with full range of motion at any joint or joints is limited by that muscle length is called Passive insufficiency where the muscle cannot stretch beyond a certain point without causing pain because of the muscle tightness.