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ULTRASOUND SCREENING FOR SHOULDER DYSPLASIA IN INFANTS WITH OBSTETRIC BRACHIAL PLEXUS PALSY - EARLY EXPERIENCE



Abstract

Purpose of study: Glenoid dysplasia occurs early in the shoulders of some children affected by obstetric brachial plexus palsy (OBPP). Prompt treatment can reverse the deformity. A program has been devised to examine these children’s shoulders by ultrasound and the early results are described.

Method: Since March 2006, all neonates born in New-castle upon Tyne with a diagnosis of OBPP have been referred to the hip ultrasound clinic. The shoulders were examined clinically for range of movement and signs of instability. A static and dynamic ultrasound examination was then performed. Treatment of subluxed shoulders involved splinting the shoulder in adduction and external rotation for six weeks after injection of the internal rotator muscles with botulinum toxin, as recommended by Ezaki and co-workers.

Results: To date, six infants have been screened. Two had significant instability with ultrasonographic evidence of early glenoid dysplasia and have been treated. One had mild glenoid dysplasia with restricted external rotation which improved with physiotherapy alone. Three were clinically and ultrasonographically normal.

Conclusions: The early experience of this program confirms the high incidence of shoulder dysplasia in the neonatal period in these children, as reported by others. The examination is safe and relatively easy. In the early stages of the condition the treatment to date has been simple and effective. We plan to continue with ultrasound screening for shoulder dysplasia in neonates with OBPP.

Correspondence should be addressed to: Mr J. B. Hunter, BSCOS, c/o BOA, The Royal College of Surgeons, 35–43 Lincoln’s Inn Fields, London WC2A 3PE.