Running Injury, the Demise of a Lower Limb Maybe?
Puzzle 2 of Christmas Stockings Hard Pack
Question is: Running Injury, the Demise of a Lower Limb Maybe?
and the answer is: DEADLEG
Word Meaning:
DEAD LEG — A blow to the upper thigh, crushing the muscle against the bone and crushing the nerve cluster next to the quadriceps. Also, the resulting injury.
Definitions from Wiktionary.