| Does Shelf Acetabuloplasty Influence Acetabular Growth and Remodeling? | |
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MedLine Citation:
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PMID: 22048866 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: Shelf acetabuloplasty has the potential to cause iatrogenic acetabular growth arrest, although accelerated acetabular growth has been reported based on plain radiographic evaluations in patients with Legg-Calvé-Perthes disease. Because plain radiographs may be limited in depicting actual acetabular morphology, it is unclear whether there are growth disturbances. QUESTIONS/PURPOSES: We therefore determined (1) whether focal or generalized acetabular growth stimulation or retardation occurred based on CT analysis in combination with plain radiographic assessment; and (2) whether radiographically assessed femoral head deformity, subluxation, and acetabular dysplasia were associated with residual zonal rim dysplasia of the acetabulum. METHODS: We examined 14 patients who had undergone shelf acetabuloplasty for "reducible subluxation" and underwent CT scans at a mean 7 years after surgery (range, 3-11 years). We measured radiographic indices reflecting acetabular depth and rim dysplasia on multiplanar reformatted images in 10 radial planes and on plain radiographs and calculated their operation-to-control ratios to assess growth changes. The mean age at surgery was 9.3 years (range, 7-12 years). RESULTS: We observed generalized accelerated growth in 11 hips and equivocal growth in three. None of the 14 hips showed an abrupt change in acetabular geometry. Despite improved acetabular depth in all hips, eight hips had focal rim dysplasia in the superior zone on CT examinations, and this was associated with a smaller center-edge angle, a greater deformity index, and preexisting acetabular dysplasia. CONCLUSIONS: Our observations support the notion that shelf acetabuloplasty has a favorable, stimulatory effect on acetabular growth. However, the possible persistence of preexisting zonal rim dysplasia should be considered. |
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Authors:
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Won Joon Yoo; Hyuk Ju Moon; Tae-Joon Cho; In Ho Choi |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-3 |
Journal Detail:
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Title: Clinical orthopaedics and related research Volume: - ISSN: 1528-1132 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-3 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0075674 Medline TA: Clin Orthop Relat Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Division of Pediatric Orthopaedics, Seoul National University Children's Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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