A Coronal Landmark for Tibial Component Positioning With Anatomical Alignment in Total Knee Arthroplasty: A Radiological and Clinical Study

Frontiers in Surgery

article

Tianlun Gong¹  Lizhi Han¹  Yihu Yi¹  Yuxiang Wang¹  Weihua Xu¹ 

[1] Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

关键词: mechanical alignment;    lateral point of articular surface of distal tibia;    total knee arthroplasty;    tibial resection;    anatomical alignment;   

DOI  :  10.3389/fsurg.2022.847987

学科分类：社会科学、人文和艺术（综合）

来源: Frontiers

【 摘 要 】

Objective The purpose of this study was to investigate the value of the lateral point of articular surface of distal tibia (LADT) for anatomical alignment in total knee arthroplasty. Methods We reconstructed 148 three-dimensional pre-arthritic tibias and measured the tibial component inclination angle corresponding to the distal landmark of LADT. A retrospective study included 81 TKA recipients divided into the AA group and MA group. Clinical assessments including ROM, HSS, WOMAC, satisfaction for surgery, and radiological assessment were evaluated at one-year follow-up. Results The tibial component varus angle corresponding to the distal landmark of LADT in the male and female groups were 3.4 ± 0.3° (2.6~4.2°) and 3.2 ± 0.3° (2.3~4.0°), respectively ( P <0.05). Using LADT as the distal landmark for extramedullary tibial cutting guidance, the medial proximal tibia angle (MPTA) of the AA group was 87.0±1.2° (85.0~90.0°), and the AA and MA technique showed no difference in improvement in postoperative knee functional recovery at final follow-up. Conclusions This study preliminarily indicated that LADT can be a reliable and economical landmark for coronal plane alignment of the tibial component.

【 授权许可】

CC BY