Congenital muscular torticollis (CMT) is a common musculoskeletal deformity observed at birth or in infancy. The purposes of this study were to: 1. establish inter- and intrarater reliability for determining severity grades of the Congenital Muscular Torticollis Severity Classification System, 2. examine the relationship between congenital muscular torticollis severity clasification grades and the length of treatment, 3. investigate, and analyze and describe the experiences of parents and infants diagnosed with CMT, and 4. compare the experiences of parents of infants with mild grade versus severe grades of involvement based on the CMT-SCS.