Quadriceps myopathy: report of a late onset sporadic case.

The Authors describe the case of a 44 year-old man whose familial and personal histories were negative for muscular diseases. The patient complained slowly progressive wasting and weakness localized to the quadriceps muscles. The bioptic study of the gastrocnemius and the quadriceps showed dystrophic changes, confirming that muscular dystrophy closely localized to quadriceps is of rare occurrence. Muscles other than quadriceps can often be involved by the same pathology even if the clinical signs continue to be localized to the quadriceps muscles for many years.