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オカザキ ケン
KEN OKAZAKI
岡崎 賢 所属 医学部 医学科（東京女子医科大学病院） 職種 教授・基幹分野長 |
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| 論文種別 | 原著 |
| 言語種別 | 日本語 |
| 査読の有無 | 査読あり |
| 表題 | Posterior tibial slope and anterior post-cam contact can change knee kinematics in extension in bi-cruciate stabilized total knee arthroplasty. |
| 掲載誌名 | 正式名：Bone & joint research 略 称：Bone Joint Res ISSNコード：20463758/20463758 |
| 掲載区分 | 国外 |
| 巻・号・頁 | 9(11),761-767頁 |
| 著者・共著者 | Hada Masaru, Mizu-Uchi Hideki, Okazaki Ken, Murakami Koji, Kaneko Takao, Higaki Hidehiko, Nakashima Yasuharu |
| 発行年月 | 2020/11 |
| 概要 | AIMS:This study aims to investigate the effects of posterior tibial slope (PTS) on knee kinematics involved in the post-cam mechanism in bi-cruciate stabilized (BCS) total knee arthroplasty (TKA) using computer simulation.METHODS:In total, 11 different PTS (0° to 10°) values were simulated to evaluate the effect of PTS on anterior post-cam contact conditions and knee kinematics in BCS TKA during weight-bearing stair climbing (from 86° to 6° of knee flexion). Knee kinematics were expressed as the lowest points of the medial and lateral femoral condyles on the surface of the tibial insert, and the anteroposterior translation of the femoral component relative to the tibial insert.RESULTS:Anterior post-cam contact in BCS TKA was observed with the knee near full extension if PTS was 6° or more. BCS TKA showed a bicondylar roll forward movement from 86° to mid-flexion, and two different patterns from mid-flexion to knee extension: screw home movement without anterior post-cam contact and bicondylar roll forward movement after anterior post-cam contact. Knee kinematics in the simulation showed similar trends to the clinical in vivo data and were almost within the range of inter-specimen variability.CONCLUSION:Postoperative knee kinematics in BCS TKA differed according to PTS and anterior post-cam contact; in particular, anterior post-cam contact changed knee kinematics, which may affect the patient's perception of the knee during activities. Cite this article: Bone Joint Res 2020;9(11):761-767. |
| DOI | 10.1302/2046-3758.911.BJR-2020-0076.R2 |
| PMID | 33135422 |