TY - CHAP M1 - Book, Section TI - Case Study: Congenital Muscular Torticollis A1 - Coulter, Colleen Patricia A1 - Sargent, Barbara A1 - Smelser, Nicole A2 - Effgen, Susan K. A2 - Fiss, Alyssa LaForme PY - 2021 T2 - Meeting the Physical Therapy Needs of Children, Third Edition AB - Congenital muscular torticollis (CMT) is a common postural asymmetry of the neck affecting 3.9% (Aarnivala, Valkama, & Pirttiniemi, 2014; Chen, Chang, Hsieh, Yen, & Chen, 2005) to 16% (Stellwagen, Hubbard, Chambers, & Jones, 2008) of newborns. It results from unilateral shortening of the sternocleidomastoid muscle (SCM) and is typically characterized by ipsilateral cervical lateral flexion and contralateral cervical rotation (Do, 2006). Screening for nonmuscular causes of the asymmetry is essential because the asymmetrical neck posture in up to 18% of infants results from nonmuscular causes, including skeletal, neurological, and visual conditions (Ballock & Song, 1996). It is also important to screen infants for conditions associated with CMT because craniofacial asymmetry is a coexisting impairment in up to 90% of infants with CMT (Cheng, Tang, Chen, Wong, & Wong, 2000). Other associated impairments include developmental dysplasia of the hip (DDH) (Tien, Su, Lin, & Lin, 2001), perinatal brachial plexus palsy (Ballock & Song, 1996), and foot deformities (Cheng et al., 2000). SN - PB - F. A. Davis Company CY - New York, NY Y2 - 2024/03/29 UR - fadavispt.mhmedical.com/content.aspx?aid=1187763540 ER -