The significance of at-risk factors in ultrasound surveillance of developmental dysplasia of the hip. A ten-year prospective study

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Abstract

Of the 34 723 infants born between 1 June 1992 and 31 May 2002, the hips of 2578 with clinical instability or at-risk factors for developmental dysplasia of the hip were imaged by ultrasound. Instability of the hip was present in 77 patients, of whom only 24 (31.2%) had an associated risk factor. From the 'at-risk' groups, the overall risk of type-III dysplasia, instability and irreducibility was 1:15 when family history, 1:27 when breech delivery and 1:33 when foot deformity were considered as risk factors. Of those hips which were ultrasonographically stable, 88 had type-III dysplasia. A national programme of selective ultrasound screening of at-risk factors for the diagnosis of hip dislocation or instability alone cannot be recommended because of its low predictive value (1:88). However, the incidence of type-III dysplasia and hip dislocation or dislocatability in the groups with clinical instability, family history, breech position and possibly postural foot deformity as risk factors could justify a programme of selective ultrasound imaging. © 2005 British Editorial Society of Bone and Joint Surgery.

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APA

Paton, R. W., Hinduja, K., & Thomas, C. D. (2005). The significance of at-risk factors in ultrasound surveillance of developmental dysplasia of the hip. A ten-year prospective study. Journal of Bone and Joint Surgery - Series B, 87(9), 1264–1266. https://doi.org/10.1302/0301-620X.87B9.16565

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