myodiastasis

my·o·di·as·ta·sis

(mī'ō-dī-as'tă-sis),
Separation of muscle.
[myo- + G. diastasis, separation]

myodiastasis

(mī″ō-dī-ăs′tă-sĭs) [Gr. mys, muscle, + diastasis, separation]
Division or rupture of a muscle.