What is likely a prosthetic cause of delayed knee flexion in someone

Question

What is likely a prosthetic cause of delayed knee flexion in someone with a below knee amputation(bka)?this question is part of prosthetics

John Adney · Accepted Answer

Anterior displacement of keel could be the reason.

John Smith · Answer

Excessive plantar flexion of the prosthetic foot can be the answer.

What is likely a prosthetic cause of delayed knee flexion in someone with a Below Knee Amputation(BKA)?