Establishment of remote imaging diagnosis of hip joint disease based on three-dimensional image analysis

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K11333
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 59020:Sports sciences-related
• Research Institution: Hokkaido University
• Principal Investigator: Irie Tohru 北海道大学, 医学研究院, 客員研究員 (30609839)
• Co-Investigator(Kenkyū-buntansha): 金井 理 北海道大学, 情報科学研究院, 特任教授 (90194878)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 股関節 / 骨形態解析 / 三次元画像解析 / 寛骨臼形成不全

Outline of Final Research Achievements

We developed new parameters to assess hip congruity, instability, and stress concentration, which cause hip pain, and established a three-dimensional quantitative evaluation method for hip joint morphology.The results were statistically compared among acetabular dysplastic hips, borderline acetabular dysplastic hips, and normal hips.
Image matching was performed using X-ray images of hip abduction with a three-dimensional hip model. The displacement of the femoral head center and its trajectory length were measured. A cluster analysis was conducted to classify the displacement pattern of the femoral head center, and trajectory lengths were compared. Displacement was classified into three patterns: medialization, hinge abduction, and centering.

Free Research Field

股関節外科学

Academic Significance and Societal Importance of the Research Achievements

本プロジェクトは、各種骨形態パラメーターによる三次元骨形態評価、二次元動作画像と三次元骨モデルのマッチングによる関節不安定性評価によって、骨形態学的特徴と関節動態を合わせて評価することにより、個々の症例において画像情報に基づいた正確な病態把握を可能となることを示唆した。これらは直接的な身体所見診察が困難な状況や診断医の経験不足等を補完しうるもので、遠隔医療にも発展可能である。また股関節疾患のみならず、スポーツ医学領域全般に応用可能なもので、画像データに基づく正確かつ検者間誤差を排除した個々の患者の診断、発症リスク予測、治療法選択に発展しうる。