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J Pediatr Orthop. 2001 May-Jun;21(3):343-7.

Ultrasonographic study of the coexistence of muscular torticollis and dysplasia of the hip.

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Department of Orthopaedics, Kaohsiung Medical University, Taiwan, ROC.


The consistent relationship between congenital muscular torticollis and dysplasia of the hip is now widely accepted. However, the coexistence rate of these two disorders has been reported with variations from 0 to 20%. To obtain a more accurate coexistence rate, ultrasound scanner was used as the diagnostic tool for both of these disorders.Sixty-three children (30 boys and 33 girls) younger than 6 months who had undergone ultrasound scanning of both bilateral sternocleidomastoid muscle and bilateral hips were included in this study. Forty-seven children were confirmed to have muscular torticollis, and the remaining 16 cases were diagnosed as postural torticollis. Only these 47 cases were included for analysis of the coexistence rate. Eight children were found with dysplasia of the hips associated with muscular torticollis, which included Graf's type IIa for four hips, type IIb for two hips, type IIIa for one hip, and type IIIb for one hip. From the results of the present ultrasonographic study, the coexistence rate of congenital muscular torticollis and dysplasia of the hip was concluded to be 17%. If only those dysplastic hips (type IIb, IIIa, IIIb) that required treatment were included, the coexistence rate would be lowered to 8.5%.

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