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KMID : 0361620030380030233
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Journal of the Korean Orthopaedic Association
2003 Volume.38 No. 3 p.233 ~ p.238
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Clinical and Radiological Results of Revision Acetabular Arthroplasty using an Acetabular Roof Reinforcement Ring
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Kim Young-Min
Kim Hee-Joong
Rhyu Kee-Hyung
Lim Soo-Taek
Yoo Jeong-Joon
Song Won-Seok
Ha Jeong-Hyun
Ko Dong-Oh
Koo Ki-Hyoung
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Abstract
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Purpose : We evaluated the clrctical and radiological results of acetabular reconstructions using an acetabular roof reinforcement ring (ARR).
Materiels and Methods : Fromivlay 1993 to November 1999,18 hips revised with ARR were evaluated. The mean age at operatrort was 53 dears. The average fellow-up period was 51 months (2494 months). Acetabular defects were classified based on the AAOS classify cation system. There was one case of type IIA defect, sac cases of type IIB defect, ten cases of type III defect and one case of type IV defect. All were treated with morselized allografts and autografts, and three were reconstructed with additional structural autografts.
Results :The average Harris hip score improved from 54 preoperatively to 76 postoperatively, but five patients complained of intermit-tent hip pain. On the last follow-up radiographs, the bone grafts were united and remodeled in all cases, but only partial resorption was observed in two hips. We found evidence of osteoysis in four hips and observed cup migration in three hips. Three hips, in which Muller rings were used,~were re-revised during the fdkrnr-up period.
Corfclusion : Acetabular reconstruction using ARR led to good clinical and radiological results, but a relative high rate ~ rerevision was shown in the cases fitted with the Muller ring. Appropriate ARR should be used depending on the extent of the acetabular defect.
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KEYWORD
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Acetabulum, Bone defect, Acetabular revision, Acetabular roof reinforcement ring(ARR)
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