Proposing a Precision-Enhancing Method for Sagittal Plane Alignment During Total Knee Arthroplasty

Author:

Park Jisu1,Lim Hyeongyu2,Chang Chong Bum3

Affiliation:

1. Seoul National University College of Medicine, SMG-SNU Boramae Medical Center

2. Nanoori hospital

3. Seoul National University College of Medicine, Seoul National University Bundang Hospital

Abstract

Abstract

Background Achieving appropriate alignment after total knee arthroplasty (TKA) is crucial for long-term survival of implant but alignment in sagittal plane is relatively not well studied. The purpose of this study was to (1) propose the preoperative sagittal planning method of TKA using X-ray, (2) validate its accuracy and (3) find factors contributing to inaccurate sagittal placement of the component. Methods Preoperative sagittal planning for the femoral and tibial component was conducted using simple X-ray images. The postoperative X-ray taken 6 weeks after surgery was used to validate the proposed method. The angle between the reference line and the expected resection line before surgery was defined as the preoperative gamma angle for the femur and delta angle for the tibia. Postoperatively, the angle between the same reference line and the actual component was defined as the postoperative gamma and delta angles, respectively. The target angle range for the difference between the preoperative and postoperative gamma and delta angles was set as -2° to 2°. Demographic and radiologic factors between groups that fell within and outside the target angle range were compared. Results Total 75 cases (80.6%) met the target angle range of distal femur resection. Femoral component tended to be placed in more flexed position than planned. Anterior femoral notching was not observed in all cases. Total 89 cases (95.7%) met the target angle range of proximal tibia resection. There were no differences in demographic and radiologic factors between those who were in the target range for femoral or tibial component placement and those who were not. No risk factors were found in additional logistic regression. Conclusions The proposed planning method in this study showed reasonable level of accuracy in sagittal plane placement of the prosthesis during TKA. Since this method does not require any programs and additional costs, it could be a good alternative in situations where robotic-assisted TKA is not available.

Publisher

Springer Science and Business Media LLC

Reference37 articles.

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3