Leg tendon (9)
I believe the answer is:
hamstring
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">leg tendon</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for hamstring that I've seen before include "Impede" , "Tendon behind the knee" , "hamper" , "Cramp the style of" , "Tendons at back of the knee" .)