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KMID : 0361620090440060627
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Journal of the Korean Orthopaedic Association
2009 Volume.44 No. 6 p.627 ~ p.633
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Preliminary results after Reduction of DDH via Medial Approach
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Bae Jung-Yun
Cho Tae-Joon
Choi In-Ho
Chung Chin-Youb
Yoo Won-Jun
Park Moon-Seok
Kim Do-Hoon
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Abstract
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Purpose: We report the outcomes of medial open reduction for developmental dysplasia of the hip (DDH).
Materials and Methods: This study reviewed the medical records and radiographs of 33 DDH cases treated by a medial open reduction and followed for at least two years. The mean age at surgery and follow-up duration was 11.4 months (range, 4 to 22) and 88 months (range, 24 to 168), respectively. The perioperative parameters, maintenance of reduction, and postoperative changes in the acetabular index and center-edge angle were recorded.
Results: The acetabular index decreased from a preoperative average of 35˚ to 16˚ at the latest follow-up. The center-edge angle improved from an average of 7˚ at postoperative 1 year to 22˚ at the latest follow-up. A secondary bony procedure was performed in 15 cases at average age of 4.4 years. Avascular necrosis was noted in 8 cases, all of whom belonged to Kalamchi group I. Among the 21 patients over 6 years-old at the latest follow-up, 18 belonged to Severin groups I or II and the remaining 3 to group III. Redislocation occurred in one case.
Conslusion: A medial open reduction is a minimal surgical procedure that can effectively release the structures obstructing a femoral head reduction. It should be a useful treatment modality for selected cases with DDH.
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KEYWORD
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Developmental dysplasia of the hip, Medial open reduction
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