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Hip dysplasia is not uncommon but frequently overlooked : a cross-sectional study based on radiographic examination of 1,870 adults

Leide, Rebecka LU orcid ; Bohman, Anna ; Wenger, Daniel LU orcid ; Overgaard, Søren ; Tiderius, Carl Johan LU and Rogmark, Cecilia LU (2021) In Acta Orthopaedica 92(5). p.575-580
Abstract

Background and purpose — Hip dysplasia in adults is a deformity in which the acetabulum inadequately covers the femoral head. The prevalence is sparingly described in the literature. We investigated the prevalence in Malmö (Sweden) and assessed whether the condition was recognized in the radiology reports. Subjects and methods — All pelvic radiographs performed in Malmö during 2007–2008 on subjects aged 20–70 years with a Swedish personal identity number were assessed. 1,870 digital radiographs were eligible for analysis. The lateral center-edge angle (LCEA) and acetabular index angle (AIA) were measured. Hip dysplasia was defined as an LCEA ≤ 20°. Intraclass correlation coefficients (ICC) for intra-observer measurements ranged from... (More)

Background and purpose — Hip dysplasia in adults is a deformity in which the acetabulum inadequately covers the femoral head. The prevalence is sparingly described in the literature. We investigated the prevalence in Malmö (Sweden) and assessed whether the condition was recognized in the radiology reports. Subjects and methods — All pelvic radiographs performed in Malmö during 2007–2008 on subjects aged 20–70 years with a Swedish personal identity number were assessed. 1,870 digital radiographs were eligible for analysis. The lateral center-edge angle (LCEA) and acetabular index angle (AIA) were measured. Hip dysplasia was defined as an LCEA ≤ 20°. Intraclass correlation coefficients (ICC) for intra-observer measurements ranged from 0.87 (AIA, 95% CI 0.78–0.93) to 0.98 (LCEA, CI 0.97–0.99). Results — The prevalence of hip dysplasia (LCEA ≤ 20°) was 5.2% (CI 4.3–6.3), (98/1,870). There was no statistically significant difference between the sexes for either prevalence of hip dysplasia or mean LCEA. The mean AIA was 0.9° (CI 0.3–1.3) higher in men (4.1 SD 5.5) compared with women (3.2 SD 5.4). The radiologists had reported hip dysplasia in 7 of the 98 cases. Interpretation — The prevalence of hip dysplasia in Malmö (Sweden) is similar to previously reported data from Copenhagen (Denmark) and Bergen (Norway). Our results indicate that hip dysplasia is often overlooked by radiologists, which may influence patient treatment.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Orthopaedica
volume
92
issue
5
pages
575 - 580
publisher
Taylor & Francis
external identifiers
  • scopus:85110354919
  • pmid:34238106
ISSN
1745-3674
DOI
10.1080/17453674.2021.1936918
language
English
LU publication?
yes
id
245b9224-cc8f-492c-bef2-631259bcfba3
date added to LUP
2021-09-07 13:59:56
date last changed
2024-12-29 12:24:14
@article{245b9224-cc8f-492c-bef2-631259bcfba3,
  abstract     = {{<p>Background and purpose — Hip dysplasia in adults is a deformity in which the acetabulum inadequately covers the femoral head. The prevalence is sparingly described in the literature. We investigated the prevalence in Malmö (Sweden) and assessed whether the condition was recognized in the radiology reports. Subjects and methods — All pelvic radiographs performed in Malmö during 2007–2008 on subjects aged 20–70 years with a Swedish personal identity number were assessed. 1,870 digital radiographs were eligible for analysis. The lateral center-edge angle (LCEA) and acetabular index angle (AIA) were measured. Hip dysplasia was defined as an LCEA ≤ 20°. Intraclass correlation coefficients (ICC) for intra-observer measurements ranged from 0.87 (AIA, 95% CI 0.78–0.93) to 0.98 (LCEA, CI 0.97–0.99). Results — The prevalence of hip dysplasia (LCEA ≤ 20°) was 5.2% (CI 4.3–6.3), (98/1,870). There was no statistically significant difference between the sexes for either prevalence of hip dysplasia or mean LCEA. The mean AIA was 0.9° (CI 0.3–1.3) higher in men (4.1 SD 5.5) compared with women (3.2 SD 5.4). The radiologists had reported hip dysplasia in 7 of the 98 cases. Interpretation — The prevalence of hip dysplasia in Malmö (Sweden) is similar to previously reported data from Copenhagen (Denmark) and Bergen (Norway). Our results indicate that hip dysplasia is often overlooked by radiologists, which may influence patient treatment.</p>}},
  author       = {{Leide, Rebecka and Bohman, Anna and Wenger, Daniel and Overgaard, Søren and Tiderius, Carl Johan and Rogmark, Cecilia}},
  issn         = {{1745-3674}},
  language     = {{eng}},
  month        = {{07}},
  number       = {{5}},
  pages        = {{575--580}},
  publisher    = {{Taylor & Francis}},
  series       = {{Acta Orthopaedica}},
  title        = {{Hip dysplasia is not uncommon but frequently overlooked : a cross-sectional study based on radiographic examination of 1,870 adults}},
  url          = {{http://dx.doi.org/10.1080/17453674.2021.1936918}},
  doi          = {{10.1080/17453674.2021.1936918}},
  volume       = {{92}},
  year         = {{2021}},
}