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Effect of periacetabular osteotomy on the distribution pattern of subchondral bone mineral density in patients with hip dysplasia

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Title: Effect of periacetabular osteotomy on the distribution pattern of subchondral bone mineral density in patients with hip dysplasia
Authors: Shimizu, Tomohiro Browse this author →KAKEN DB
Takahashi, Daisuke Browse this author →KAKEN DB
Nakamura, Yumejiro Browse this author
Miyazaki, Takuji Browse this author
Yokota, Shunichi Browse this author
Ishizu, Hotaka Browse this author
Iwasaki, Norimasa Browse this author →KAKEN DB
Keywords: bone mineral density
hip dysplasia
periacetabular osteotomy
Issue Date: Nov-2022
Publisher: John Wiley & Sons
Journal Title: Journal of orthopaedic research
Volume: 40
Issue: 11
Start Page: 2626
End Page: 2631
Publisher DOI: 10.1002/jor.25284
Abstract: Despite the availability of long-term follow-up data, the effect of pelvic osteotomy on the natural history of osteoarthritis is not yet fully understood, partly because there is untapped potential for radiographs to better describe osteoarthritis. Therefore, this study aimed to assess the distribution of subchondral bone mineral density (BMD) across the acetabulum in patients with hip dysplasia immediately (2 weeks) and 1 year after undergoing periacetabular osteotomy (PAO). To that end, we reviewed 40 hips from 33 patients with developmental dysplasia of the hip who underwent PAO between January 2016 and July 2019 at our institution. We measured subchondral BMD through the articular surface of the acetabulum using computed tomography osteoabsorptiometry, dividing the distribution map into nine segments. We then compared the subchondral BMD between 2 weeks and 1 year after PAO in each area. At 2 weeks after PAO, the high-density area tended to be localized particularly in the lateral part of the acetabulum, whereas 1 year after PAO, the high-density area moved to the central and lateral parts. The percentage ratios of the subchondral BMD for the central-posterior, lateral-central, and lateral-posterior areas relative to the central-central area were significantly decreased at 1 year after PAO, as compared to those at 2 weeks after PAO. These findings suggest that loading was altered by PAO to be more similar to physiological loading. A long follow-up observational study is warranted to confirm the association between early changes in subchondral BMD by PAO and joint degeneration.
Rights: © 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:北海道大学病院 (Hokkaido University Hospital) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 清水 智弘

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