A morphometric study of posterior tibial slope differences by sex and ethnicity in a South African population

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Authors

Hohmann, Erik
Nel, Adri
Van Zyl, Reinette
Natalie, Natalie
Mogale, Nkhensani

Journal Title

Journal ISSN

Volume Title

Publisher

Springer

Abstract

PURPOSE : Posterior tibial slope (PTS) influences knee kinetics and kinematics. The purpose of this study was to investigate morphology and variation within a sample of the black and white male and female population. METHOD : 480 randomly selected lateral knee radiographs were included. The anterior tibial cortex angle (ATC), proximal anatomical tibial axis angle (PTAA) and the posterior tibial cortex angle (PTC) were measured using ImageJ 1.53e software. Between group differences (black male and females, white males and females) were analysed using one-way ANOVA. RESULTS : Significant differences between the three different angles (p = 0.0001, F = 50.68) but no between group differences for the individual angle measurements (ATC, PTAA, PTC) between ethnicity and sex. For ATC, the angles between groups ranged from 14.20 + 2.81 degrees (Females Black), 14.62 + 3.6 degrees (Male Black), 15.18 + 3.68 degrees (Male White) to 15.54 + 3.21 degrees (Females White). For PTAA, the angles between groups ranged from 10.37 + 2.59 degrees (Females Black), 10.61 + 3.27 degrees (Male Black), 10.68 + 3.27 degrees (Male White) to 10.83 + 3.27 degrees (Females White). For PTC, the angles between groups ranged from 6.07 + 3.13 degrees (Females White), 6.13 + 3.7 degrees (Male White), 6.35 + 2.67 degrees (Females Black) to 6.62 + 3.16 degrees (Male Black). CONCLUSION : This study could not establish differences in posterior tibial slope angles between males and females and ethnicity. Significant differences between ATC, PTAA and PTC angles were observed and PTC angles were smaller when compared to PTAA and ATC angles. The ATC angles ranged between 13.18 and 16.57 degrees, the PTAA angles ranged 9.38–11.87 degrees and the PTC angles ranged between 5.03 and 7.62 degrees for all groups.

Description

DATA AVAILABILITY : No datasets were generated or analysed during the current study.

Keywords

Posterior tibial slope (PTS), Anterior tibial cortex angle (ATC), Proximal anatomical tibial axis angle (PTAA), Posterior tibial cortex angle (PTC), Morphology, anatomy, Sex, Race, SDG-03: Good health and well-being, SDG-05: Gender equality

Sustainable Development Goals

SDG-03:Good heatlh and well-being
SDG-05:Gender equality

Citation

Hohmann, E., Nel, A., Zyl, R.v. et al. A morphometric study of posterior tibial slope differences by sex and ethnicity in a South African population. Surgical and Radiologic Anatomy 47, 52 (2025). https://doi.org/10.1007/s00276-024-03551-2.