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The Ferguson medial approach for open reduction of developmental dysplasia of the hip

A CLINICAL AND RADIOLOGICAL REVIEW OF 49 HIPS

6 Delamere Road, Gatley, Cheshire SK8 4PH, UK.

U. Younis, MB, ChB, Senior House Officer

Department of ENT, North Manchester General Hospital, Delaunays Road, Crumpsall, Manchester M8 5RB, UK.

J.B. Day, FRCS, Consultant Orthopaedic Surgeon; and T.M. Meadows, FRCS, Consultant Orthopaedic Surgeon

Booth Hall Children’s Hospital, Charlestown Road, Blackley, Manchester M9 7AA, UK.

Correspondence should be sent to Mr N. Kiely.

The results of the Ferguson medial approach for open reduction of developmental dysplasia of the hip (DDH) were reviewed for 49 hips with a follow-up of more than 48 months. The mean age at operation was 12.3 months (6 to 23). The mean length of clinical and radiological follow-up was 82 months (48 to 148). Three redislocations occurred. Group I avascular necrosis according to the classification of Kalamchi and MacEwen was seen in four hips, group II in two hips and group III in one hip; 92% of the hips were classified as Severin class I and II. The acetabular index and centre edge (CE) angles were within normal limits at final follow-up, but were still significantly different from the unaffected side.

We conclude that the Ferguson procedure is safe and reliable for low dislocations in children aged six to 18 months.