Effect of Tibial Component Alignment and Posterior Slope on Tibial Coverage in a Chinese Population: A Three-dimensional Anthropometric Study

• DOI: 10.1055/s-0038-1676564
• Publication Date: 2018-12-21T23:51:48Z
• Authors: Long Shao; Ting Wang; Junyi Liao; Wei Xu; Xi Liang; Wei Huang
• Keywords: Tibial tuberosity

Abstract The standard for rotational alignment and posterior slope of the tibial component in total knee arthroplasty remains controversial. This study aimed to evaluate effect on coverage. Computer tomographic scans 101 specimens were used reconstruct three-dimensional tibia models. A virtual surgery was performed generate a resection plane with different slopes proximal tibia. Symmetrical anatomical components placed aligning medial one-third tubercle (Insall) edge patella tendon (Akagi), respectively. Differences coverage mismatch evaluated statistically compared across alignments, angles, genders. increased from 83.21 85.96% Akagi's alignments 85.19 87.22% Insall along increasing 0 7 degrees. Regardless prosthesis design, there significant difference between two as significantly higher With degrees, more overhang less underhang anteromedially found males females. current design has tendency anteromedial zone which does not exist symmetrical design. baseplate better when third tuberosity 5 Gender should be taken into account given priority