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Identification of recurring scapular fracture patterns using 3-dimensional computerized fracture mapping
Habtamu M Yimam1, Roopam Dey2, Pududu A Rachuene3
1Division of Biomedical Engineering, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
Journal of Shoulder and Elbow Surgery
|October 10, 2021
Summary
Scapular fractures exhibit repeatable patterns, with lateral, medial, and superior borders being common exit zones. These findings from 3D CT scans can aid surgical planning for scapular fractures.
Area of Science:
- Orthopedic Surgery
- Radiology
- Anatomy
Background:
- Accurate interpretation of scapular fracture lines is crucial for fixation and implant selection.
- Three-dimensional (3D) computed tomography (CT) aids in understanding complex scapular fracture patterns.
- This study aimed to map scapular fractures and identify common patterns using 3D CT reconstructions.
Purpose of the Study:
- To create detailed scapular fracture maps.
- To identify frequently occurring fracture patterns in the scapula.
- To utilize 3D reconstructed CT images for fracture analysis.
Main Methods:
- Seventy patients with scapular fractures underwent 3D CT reconstruction.
- Fracture fragments were virtually reduced and aligned on 3D templates.
- Fracture lines were transferred to 2D templates from anterior, posterior, and lateral views to generate heat maps.
Main Results:
- Scapular fractures commonly exit through the lateral (69%), medial (67%), and superior (60%) borders.
- Frequent fracture zones include the superior lateral border, medial scapular spine base, and spinoglenoid notch.
- Simple intra-articular fractures (transverse/oblique) were the most common type (92%) in the glenoid region.
Conclusions:
- Scapular fractures demonstrate predictable and repeatable patterns.
- Fracture and heat maps effectively identify recurrent fracture zones.
- These maps can assist in surgical planning and optimizing implant design for scapular fractures.
