Muscle rupture caused by exacerbated spasticity in a patient with multiple sclerosis.

We report a case of muscle rupture caused by acute exacerbation of spasticity in a patient with primary chronic progressive multiple sclerosis (PPMS). A complete disruption of the adductor muscles was diagnosed by sonography and still reproducible in a follow-up three months after the clinical event. To our knowledge, this is the first case report of muscle rupture caused by spasticity in a patient with MS. In addition to the clinical case report we give a short overview of morphological and functional changes in spastic muscle and current standards of symptomatic therapy.