Related Experiment Video
Updated: May 13, 2026
Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy
Published on: February 17, 2023
Comparative study of anatomical landmark technique and self-aligned tibial component rotation determined by
Thanainit Chotanaphuti1, Watcharin Panichcharoen, Artit Laoruengthana
1Department of Orthopaedics, Phramongkutklao Hospital, Bangkok, Thailand.
Background:
An improper femoral and tibial component rotation is one of a major reason leading to a failed TKA. There is controversial on determination of rotational alignment particularly on a tibial component. An anatomical landmarks and a self-aligned technique have been proposed. It is the authors' purpose to determine the difference between two techniques in setting the rotation of tibial component.
Material And Method:
The authors conducted a prospective, comparative study of 30 consecutive primary total knee arthroplasty. There were 4 men and 26 women with mean age of 68.6 years. All procedures were performed by a single surgeon with a navigation system. The degree of rotation of the tibial trial component established by a just-medial to the tibial tuberosity and self-aligned technique was compared.
Results:
A mean of the degree of the tibial component rotation with the self-aligned of the center-post technique was 3 degrees more externally rotated than the just-medial to the tibial tuberosity technique. The self-aligned technique had standard deviations of 4.41 degrees, of which was significantly less variable (p < 0.05) than 5.94 degrees of the just-medial to the tibial tuberosity technique.
Conclusion:
The authors conclude that establishment of the tibial component rotation by using the self-aligned of the center-post technique will rotate the component more external compared with the just-medial to the tibial tuberosity technique.
