Influence of cartilage and menisci on the sagittal slope of the tibial plateaus
Article first published online: 21 JUN 2012
Copyright © 2012 Wiley Periodicals, Inc.
Volume 26, Issue 7, pages 883–892, October 2013
How to Cite
Cinotti, G., Sessa, P., Ragusa, G., Ripani, F. R., Postacchini, R., Masciangelo, R. and Giannicola, G. (2013), Influence of cartilage and menisci on the sagittal slope of the tibial plateaus. Clin. Anat., 26: 883–892. doi: 10.1002/ca.22118
- Issue published online: 23 SEP 2013
- Article first published online: 21 JUN 2012
- Manuscript Accepted: 18 MAY 2012
- Manuscript Revised: 25 APR 2012
- Manuscript Received: 1 MAR 2012
- tibial slope;
- total knee arthroplasty;
- knee meniscus;
- knee biomechanics
We analyzed the magnetic resonance studies of the knee in 80 subjects, 45 men and 35 women with a mean age of 38.9 years, who showed no pathological condition of the joint. Using an imaging visualization software, the sagittal longitudinal axis of the tibia was identified. The angle between this axis and a line tangent to the bone profile of the tibial plateau (bone slope) and to the superior border of the menisci (meniscal slope) were calculated. Thickness of anterior and posterior portion of menisci and underlying cartilage were also measured. The bone slope averaged 8° and 7.7° on the medial and lateral sides, respectively. The mean meniscal slope was 4.1° and 3.3° on the medial and lateral sides, respectively, with a significant difference compared with the bone slope. Menisci and underlying cartilage were significantly thicker in their posterior than their anterior portion (7.6 and 5.2 mm, respectively, in the medial compartment; 8.6 and 5.2 mm, respectively, in the lateral compartment). The presence of cartilage and menisci implies a significant decrease in the posterior tibial slope. In the lateral compartment, the greater the bone slope, the larger the difference between bone and meniscal slope, which means that a marked posterior tilt of the lateral tibial plateau is decreased by the cartilage and meniscus. These findings should be taken into account in planning surgical procedures which affect the slope of the articular tibial surface. Clin. Anat. 26:883–892, 2013. © 2012 Wiley Periodicals, Inc.