Rotational Changes in the Distal Tibial Fragment Relative to the Proximal Tibial Fragment at the Osteotomy Site after Open-Wedge High-Tibial Osteotomy

被引:6
|
作者
Sasaki, Takahiro [1 ]
Akamatsu, Yasushi [1 ]
Kobayashi, Hideo [1 ]
Mitsuhashi, Shota [1 ]
Nejima, Shuntaro [1 ]
Kumagai, Ken [1 ]
Saito, Tomoyuki [1 ]
Inaba, Yutaka [1 ]
机构
[1] Yokohama City Univ, Dept Orthopaed Surg, Sch Med, Kanazawa Ku, 3-9 Fukuura, Yokohama, Kanagawa, Japan
关键词
D O I
10.1155/2021/6357109
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
The present study is aimed at assessing the changes in tibial rotation at the osteotomy site after an open-wedge, high-tibial osteotomy (OWHTO) and analysing the factors that affect rotational changes in the distal tibial fragment relative to the proximal tibial fragment at the same site. This study involved 53 patients (60 knees; 16 males and 37 females) with medial osteoarthritis (OA) who underwent OWHTO and preoperative and 3-month postoperative computed tomography (CT) scans. Rotational angles of the distal tibia were measured using Stryker OrthoMap 3D by comparing preoperative and postoperative CTs. The mean rotational angle yielded an external rotation of 2.9 degrees +/- 4.8 degrees. There were 17 knees with internal rotations, 37 knees with external rotations, and one knee with no rotation. The rotational angle significantly correlated with the resultant change in the femorotibial angle (correction angle) and the angle between the ascending and transverse osteotomy lines on the anterior osteotomised surface on which a flange was formed with the distal tibial osteotomised surface (flange angle). The flange angle affected the rotation, but it may have been affected by our surgical technique. The rotational angle did not significantly correlate with the change in the angle of the posterior tibial slope or body mass index. There were significant correlations between the rotational angle and correction angle (r=0.42, p<0.05). Additionally, the rotational angle correlated with the flange angle (r=-0.41, p<0.05).
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页数:8
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