Three-Dimensional Quantification of Posterior Facet Displacement in Sanders Type II and III Intra-Articular Calcaneal Fractures

Overview

This study quantifies the three-dimensional displacement characteristics of posterior facet fragments in Sanders type II and III intra-articular calcaneal fractures. Significant lateral and inferior translations, along with notable rotational deformities, were observed.

Background

Intra-articular calcaneal fractures (IACFs) are complex injuries that can significantly affect gait stability and motor function. Accurate assessment of these fractures is critical for effective treatment, yet traditional imaging methods often fail to capture the intricate three-dimensional nature of the posterior facet. Recent advancements in 3D imaging technology offer improved visualization and planning in orthopedic surgery.

Data Highlights

Key Findings

• Significant displacement occurred in all directions (P < 0.05).
• Predominant translations were lateral (4.55 mm) and inferior (3.81 mm).
• Primary rotational deformities included axial plane internal rotation (17.62°) and sagittal plane anterior tilt (12.29°).
• Coronal plane varus showed high variability despite minimal mean displacement (4.61°).

Clinical Implications

Understanding the specific displacement patterns can enhance surgical precision.

Conclusion

This research provides valuable quantitative data on the displacement characteristics of posterior facet fragments in calcaneal fractures. Further validation through biomechanical and clinical studies is necessary.

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