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Journal of Bone and Joint Surgery - British Volume, Vol 89-B, Issue 7, 948-952.
doi: 10.1302/0301-620X.89B7.18751  
Copyright © 2007 by British Editorial Society of Bone and Joint Surgery
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The value of MRI undertaken immediately after reduction of the hip as a predictor of long-term acetabular dysplasia

P. D. Mitchell, FRCS(Trauma & Orth), MSc, MD, Honorary Lecturer1; N. S. Chew, MRCP, Radiology Specialist Registrar1; I. Goutos, MRCS(Eng), Orthopaedic Senior House Officer1; J. C. Healy, MRCP, FRCR, Consultant Radiologist1; J. C. Lee, MRCS(Eng), FRCR, Consultant Radiologist1; S. Evans, FRCS(Orth), Consultant Paediatric Orthopaedic Surgeon1; and A. Hulme, FRCS(Orth), Consultant Paediatric Orthopaedic Surgeon1

1 Chelsea & Westminster Hospital, 369 Fulham Road, London SW10 9NH, UK.

Correspondence should be sent to Mr P. D. Mitchell at The Department of Biosurgery and Surgical Technology, Imperial College London, 7E Charing Cross Hospital, Fulham Palace Road, London, W6 8RF, UK; e-mail: piers.mitchell{at}imperial.ac.uk

Our aim was to determine whether abnormalities noted on MRI immediately after reduction for developmental dysplasia of the hip could predict the persistance of dysplasia and aid surgical planning. Scans of 13 hips in which acetabular dysplasia had resolved by the age of four years were compared with those of five which had required pelvic osteotomy for persisting dysplasia. The scans were analysed by two consultant musculoskeletal radiologists who were blinded to the outcome in each child.

The postreduction scans highlighted a number of anatomical abnormalities secondary to developmental dysplasia of the hip, but statistical analysis showed that none were predictive of persisting acetabular dysplasia in the older child, suggesting that the factors which determine the long-term outcome were not visible on these images.






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Registered charity no: 209299     Print ISSN: 0301-620X
Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General