Source : Webster's Revised Unabridged Dictionary (1913)

Contracture \Con*trac"ture\ (?; 135), n. [L. contractura a
   drawing together.] (Med.)
   A state of permanent rigidity or contraction of the muscles,
   generally of the flexor muscles.

Source : WordNet®

contracture
     n : an abnormal and usually permanent contraction of a muscle