Answer: hamstrings

AnswerCrossword Clue
HAMSTRINGSRenders powerless
HAMSTRINGSLeg tendons
HAMSTRINGSThwarts
HAMSTRINGSHinders the efficiency of
hamstringsThe great tendon at the back of a quadruped's hock
hamstringsAny of five tendons at the back of a person's knee