contracture

from WordNet (r) 3.0 (2006)

contracture
    n 1: an abnormal and usually permanent contraction of a muscle

from The Collaborative International Dictionary of English v.0.48

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.
   [1913 Webster]