Functional Outcome after Revision Surgery for Developmental Dysplasia of the Hip (DDH)
Volume 9 | Issue 2 | May-August 2023 | Page: 21-26 | Atul Bhaskar
DOI- https://doi.org/10.13107/ijpo.2023.v09.i02.167
Submitted: 24/02/2023; Reviewed: 18/03/2023; Accepted: 25/05/2023; Published: 10/08/2023
Authors: Atul Bhaskar MS Ortho, FRCS Ortho [1]
[1] Department of Orthopaedics, Bombay Hospital Institute of Medical Sciences, Mumbai, Maharashtra, India.
Address of Correspondence
Dr. Atul Bhaskar,
Paediatric Orthopaedic Surgeon, Department of Orthopaedics, Bombay Hospital Institute of Medical Sciences, Mumbai, Maharashtra, India.
E-mail: arb_25@yahoo.com
Abstract
Background: Failure after primary DDH surgery can occur early or immediate, delayed (within six months) and late due to poor remodelling. We report the short-term results after revision surgery in eighteen children including four early and 14 delayed failures.
Patient and Methods: Between 2002 and 2017, eighteen children (19 hips) underwent primary surgery at a mean age of 19 months (range: 9 months – 24 months). There were 12 girls and 6 boys in the study, with nine left and eight right sided dislocations. One child had bilateral dislocation. The mean age at revision surgery was 30 months (range: 22 months – 48 months).
Results: All cases were assessed with the modified Ponseti score to include squatting and cross-leg sitting. Eleven children (61%) were completely pain free, able to squat (Modified Ponseti score 1 and 2), three (17%) had mild limp and four (22%) had gross limitation of function. Avascular necrosis (AVN) was recorded according to Kalamchi and MacEwen criteria. Nine hips (50%) had mild AVN and six (33%) had coxa valga due to lateral physeal arrest.
The radiological outcome at final radiograph was based on Severin grade. Only 4 hips (22%) had a spherical head. Ten hips had moderate deformity (55%) and 5 hips (27%) had aspherical incongruency.
Conclusion: Early and delayed failures in DDH surgery are mainly due to inadequate initial exposure and poor hip stabilization techniques. About 50% of the revision cases had a satisfactory outcome on short term follow-up.
Keywords: Hip, Revision, Surgery, Function, Outcome
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How to Cite this Article: Bhaskar | A Functional Outcome after Revision Surgery for Developmental Dysplasia of the Hip (DDH) | International Journal of Paediatric Orthopaedics | May-August 2023; 9(2): 21-26. https://doi.org/10.13107/ijpo.2023.v09.i02.167 |