cripple

(noun) someone who is unable to walk normally because of an injury or disability to the legs or back.

(verb) deprive of strength or efficiency; make useless or worthless. Synonyms: stultify. Examples: "This measure crippled our efforts." "Their behavior stultified the boss's hard work."

(verb) deprive of the use of a limb, especially a leg. Synonyms: lame. Example: "The accident has crippled her for life."