Imaging analysis on the joint line convergence angle of the knee joint after open-wedge high tibial osteotomy(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2021年第11期
- Page:
- 1381-1386
- Research Field:
- 医学影像物理
- Publishing date:
Info
- Title:
- Imaging analysis on the joint line convergence angle of the knee joint after open-wedge high tibial osteotomy
- Author(s):
- LIU Mingzhong1; SHI Jianhui1; XIE Junjie1; CHEN Jieyun2
- 1. Department of Orthopedics, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou 362100, China 2. Department of Imaging, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou 362100, China
- Keywords:
- Keywords: open-wedge high tibial osteotomy joint line convergence angle knee joint range of motion knee joint score
- PACS:
- R681.8
- DOI:
- DOI:10.3969/j.issn.1005-202X.2021.11.012
- Abstract:
- Abstract: Objective To study the relationship between the joint line convergence angle (JLCA) in the supine position before open-wedge high tibial osteotomy and JLCA in the standing position after operation. Methods A total of 84 patients receiving open-wedge high tibial osteotomy for medial knee osteoarthritis were selected and divided into low JLCA group (preoperative JLCA<4°) and high JLCA group (preoperative JLCA≥4°). Knee joint range of motion (ROM), hip-knee-ankle angle (HKA), weight-bearing line (WBL) ratio, American Knee Society (AKS) knee joint score and function score, Lysholm knee score, and knee injury and osteoarthritis outcome score (KOOS) were measured before and 1 year after operation. Results Before operation, HKA, WBL ratio and potential lateral laxity in high JLCA group were significantly lower than those in low JLCA group (P<0.05), and the Kellgren and Lawrence scores of high JLCA group were higher than those of low JLCA group (P<0.05). There was no significant difference in TPS, MPTA, total JLCA or JLO between two groups (P>0.05). Compared with low JLCA group, high JLCA group had higher supine JLCA, ΔJLCA, inversion and eversion JLCA and potential medial laxity (P<0.05), and smaller ROM (P<0.05). No significant difference was found in any clinical scores between two groups (all P>0.05). After operation, the differences between two groups in HKA, correction error, WBL ratio, TPS, MPTA bone correction, total JLCA or JLO were trivial (P>0.05). However, the correction angle and soft tissue correction of high JLCA group were larger than those of low JLCA group (P<0.05) and the postoperative JLCA, ΔJLCA, inverted and everted JLCA in high JLCA group were higher than those in low JLCA group (P<0.05) and the postoperative ROM of low JLCA group was larger than that of high JLCA group (P<0.05). There was no significant difference in any postoperative clinical scores between two groups (P>0.05). JLCA in the supine position before operation was correlated with JLCA in the standing position after operation (r=0.696, P<0.001). Conclusion When controlling intraoperative JLCA, the postoperative coronal plane arrangement is not affected by the changes in JLCA and the difference in soft tissue correction between low and high JLCA groups. However, compared with the target coronal plane arrangement, overcorrection still exists in two groups.
Last Update: 2021-11-27