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イトウ ジユンヤ
伊藤 淳哉 所属 医学部 医学科（東京女子医科大学病院） 職種 助教 |
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| 論文種別 | 原著 |
| 言語種別 | 英語 |
| 査読の有無 | 査読あり |
| 表題 | AP3×ML3 reduction quality classification for femoral trochanteric fractures: validation for reliability focusing on positive medial cortical support. |
| 掲載誌名 | 正式名：Journal of orthopaedic surgery and research 略 称：J Orthop Surg Res ISSNコード：1749799X/1749799X |
| 掲載区分 | 国外 |
| 巻・号・頁 | 18(1),pp.64 |
| 著者・共著者 | Itou Junya, Kuramitsu Yujiro, Hatta Satoshi, Okazaki Ken |
| 担当区分 | 筆頭著者 |
| 発行年月 | 2023/01 |
| 概要 | INTRODUCTION:This study evaluated the validity of the AP3 × ML3 reduction quality classification, which applies the concept of positive medial cortical support.METHODS:A total of 120 trochanteric fractures classified as AO Foundation/Orthopedic Trauma Association 31A1 and A2 were retrospectively analyzed. The validity of the AP3 × ML3 classification was evaluated by comparison with the Baumgaertner reduction quality criteria. When using the AP3 × ML3 classification, reduction quality was divided into three classes based on the degree of anterior cortical contact between the proximal and distal fragments. Reduction quality was also divided into three classes when using the Baumgaertner criteria. The frequency of mechanical complications, including cut-out, delayed union, and excessive migration of the lag screw, was retrospectively assessed. Intra-observer and inter-observer reliability was assessed using the intraclass correlation coefficient (ICC).RESULTS:Mechanical complications included 4 cases of cutout (3.3%) and 1 of delayed union (0.8%). Mechanical complications occurred for all levels of reduction quality in both classifications, except for the acceptable of the Baumgaertner criteria. When reduction quality was rated as good, acceptable, and poor the incidence of mechanical complications was 2.5%, 5.7%, and 16%, respectively, under the AP3 × ML3 classification and 3.3%, 0%, and 15.0%, respectively, under the Baumgaertner criteria. The ICC was 0.80 for intra-observer reliability and 0.57 for inter-observer reliability when using the AP3 × ML3 classification and 0.85 and 0.34, respectively, when using the Baumgaertner criteria.CONCLUSION:The AP3 × ML3 classification was reliable and easy to use compared with the widely used Baumgaertner reduction quality criteria. Level of evidence 4. |
| DOI | 10.1186/s13018-023-03555-5 |
| PMID | 36694258 |