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Variations in calcaneonavicular morphology demonstrated with radiography
1Department of Diagnostic Radiology, Queen's University, Kingston General Hospital, 76 Stuart St, Kingston, ON, Canada K7L 2V7. 3jtl@qlink.queensu.ca
Radiology
|December 12, 2003
Summary
This study found that calcaneonavicular coalition (synchondrosis and syndesmosis) may be more common than previously thought. Radiographic analysis classified variations in calcaneonavicular morphology in 460 patients.
Area of Science:
- Orthopedic surgery
- Radiology
- Podiatry
Background:
- Calcaneonavicular coalition is a fusion of the calcaneus and navicular bones.
- Understanding its prevalence and radiographic variations is crucial for diagnosis and treatment.
Purpose of the Study:
- To classify and determine the prevalence of radiographic calcaneonavicular morphology variations.
- To estimate the prevalence in a patient population presenting with acute foot pain.
Main Methods:
- Retrospective review of 460 foot radiographs from emergency department patients.
- Classification of calcaneonavicular morphology into four types (1-4) based on medial oblique views.
- Statistical analysis (Chi2, ANOVA) to compare prevalence, age, and calcaneonavicular gap across types.
Main Results:
- Type 1 morphology (normal) was prevalent in 94.3% of patients.
- Types 2 and 3 (calcaneonavicular coalitions) combined had a prevalence of 5.6%.
- No significant differences in prevalence were found between sexes or correlation with age; coalitions showed a narrower calcaneonavicular gap.
Conclusions:
- The prevalence of calcaneonavicular coalition (synchondrosis and syndesmosis) might be underestimated in current literature.
- Further research is necessary to validate these findings and their clinical implications.