Related Experiment Video
Updated: Apr 12, 2026
09:01
Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
Published on: January 24, 2018
12.6K
Descriptive Quantitative Analysis of Rearfoot Alignment Radiographic Parameters
Andrew J Meyr1, Matthew R Wagoner2
1Associate Professor, Department of Podiatric Surgery, Temple University School of Podiatric Medicine, Philadelphia, PA.
Summary
This study analyzed radiographic foot measurements in 250 patients to establish normal values for pes planovalgus deformity. Findings suggest current radiographic parameters, while useful, lack definitive "normal" ranges for accurate diagnosis and treatment selection.
Area of Science:
- Orthopedics
- Radiology
- Podiatry
Background:
- Pes planovalgus deformity assessment relies on radiographic parameters like transverse talocalcaneal angle (tTCA) and calcaneal inclination angle (CIA).
- Established "normal" values for these key radiographic measurements are not consistently defined, impacting preoperative evaluation and surgical planning.
Purpose of the Study:
- To retrospectively evaluate descriptive statistics of multiple radiographic parameters in a large patient cohort.
- To establish an objective basis for differentiating "normal" from "abnormal" radiographic measurements in foot deformities.
- To assess the correlation between these radiographic parameters and body mass index (BMI).
Main Methods:
- Retrospective analysis of anteroposterior and lateral foot radiographs from 250 patients without prior foot surgery or trauma.
- Evaluation of seven radiographic parameters: tTCA, calcaneocuboid angle (CCA), talar head uncovering (THU), CIA, talar declination angle (TDA), lateral talar-first metatarsal angle (lTFA), and lateral talocalcaneal angle (lTCA).
- Descriptive statistical analysis and correlation assessment with BMI.
Main Results:
- Mean values were determined for all evaluated radiographic parameters, generally aligning with historical data.
- Transverse talocalcaneal angle (tTCA), talar head uncovering (THU), and talar declination angle (TDA) exhibited normal distribution.
- Calcaneal inclination angle (CIA) and lateral talocalcaneal angle (lTCA) showed a moderate negative correlation with BMI.
Conclusions:
- The study provides descriptive statistics for key radiographic parameters in a large population, contributing to a better understanding of foot alignment.
- A definitive quantitative basis for defining "normal" versus "abnormal" radiographic measurements was not established in this cohort.
- Further research is needed to refine diagnostic criteria and establish universally accepted normal ranges for pes planovalgus assessment.
