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A new method for assessing tibial torsion using computerized tomography in a pediatric population
Nathaly Gavira1, Blaise Cochard2, Nastassia Guanziroli2
1Pediatric Orthopedics Unit, Pediatric Surgery Service, University Hospitals of Geneva, Geneva, Switzerland.
Frontiers in Pediatrics
|July 30, 2024
Summary
Assessing tibial torsion using computerized tomography (CT) scans can vary based on the axis measured. Measuring the posterior margin tibial plateau angle (PMTPA) and talar angle (TA) offers a simpler and faster method for clinical practice.
Area of Science:
- Orthopedics
- Radiology
- Biomedical Engineering
Background:
- Tibial torsion disorders can cause abnormal gait, necessitating orthopedic consultation.
- Accurate assessment of tibial torsion is crucial for diagnosis and treatment planning.
Purpose of the Study:
- To evaluate an alternative method for assessing tibial torsion using computerized tomography (CT) images.
- To compare measurements using different tibial axes, including the geometric axis of the tibiotalar joint.
Main Methods:
- Retrospective review of 100 CT scans.
- Measurements included proximal transtibial angle (PTTA), posterior margin tibial plateau angle (PMTPA), intermalleolar angle (IMA), and talar angle (TA).
- Tibial torsion angle was calculated using these measurements.
Main Results:
- No significant difference was found between PTTA and PMTPA.
- A statistically significant difference was observed between IMA and TA.
- Measurement time varied, with PMTPA and TA being faster to trace.
Conclusions:
- Tibial torsion measurements differ based on the chosen axis.
- Measuring PMTPA and TA is recommended for clinical practice due to simplicity and speed.
- This method provides a more practical approach to assessing tibial torsion in patients.
