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Tibial torsion correlates with talar morphology
David J Ciufo1, Erin A Baker1, Corinn K Gehrke1
1Beaumont Health, Departments of Orthopaedic Surgery and Research, Beaumont Research Institute, 3601 West 13 Mile Road, Suite 404, Royal Oak, MI 48073, USA.
Summary
This study found a significant link between tibial torsion and talus bone shape in arthritic ankles. These findings may help understand foot and ankle deformities.
Area of Science:
- Orthopedic Surgery
- Radiology
- Anatomy
Background:
- Limited research exists on ankle axial rotation and talus anatomy variations.
- Understanding these relationships is crucial for diagnosing and treating foot and ankle pathologies.
Purpose of the Study:
- To investigate the rotational profile of the distal tibia.
- To examine its association with talus morphology, foot type, and tibiotalar tilt in arthritic ankles.
Main Methods:
- Retrospective review of preoperative imaging from 173 patients with ankle arthritis.
- Computed tomography (CT) for tibial torsion and talar neck-body angle (TNBA) measurements.
- Weightbearing radiographs for tibiotalar tilt and foot-type assessment.
Main Results:
- Mean external tibial torsion was 29.2±9.1° and mean TNBA was 35.2±7.5° medial.
- A moderate correlation was observed between increased external tibial torsion and decreased TNBA (ρ=-0.576, p<.0001).
- Weak associations were noted between external tibial torsion and varus tibiotalar tilt, and first ray plantarflexion.
Conclusions:
- A significant correlation exists between tibial torsion, talus morphology, tibiotalar tilt, and first ray plantarflexion.
- This association offers new insights into the development of foot and ankle deformities and associated pathologies.
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