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- Title
The safe zone of distal fibula was determined based on the classification of lateral malleolus fossa.
- Authors
You, Gui-xuan; Huang, Lei; Li, Ming-hui; Xiong, Bin; Peng, Wan-lin; Shi, Hou-yin; Zhang, Lei
- Abstract
Background: Lateral malleolus fractures are very common, and the distal fibular geometry is complex. This study aimed to classify the lateral malleolus fossa (MF) into different types by characterizing the lateral MF imaging morphology and exploring the relationship between the lateral MF and internal fixation position after distal fibula fractures. Methods: Anteroposterior CT reconstruction was performed on 248 subjects. After reconstruction, the deepest point of the lateral MF was located, and then, the cross-sectional shape of the lateral MF was observed and classified. Results: According to the morphology of the CT cross section, the lateral MF was divided into three types: type C (43.1%), type V (32.2%), and type Flat (24.7%). Type V (3.98 ± 0.82) was significantly longer than type C(2.83 ± 0.54) and type Flat (1.84 ± 0.42) in cd. Similarly, in ∠α, Type Flat(136.31 ± 9.63) was the largest, followed by type C (116.51 ± 8.79), and type V (89.31 ± 9.07) was the smallest. Other measurements were not found any significant differences between the above. Conclusion: According to the morphology of the CT cross section, the lateral MF was divided into three types: type C, type V and type Flat. Type V is most likely to be invaded when fixing the distal fibula. Screws less than 9 mm should be selected when fixing, and screws no more than 10 mm should be selected when there are type C and type Flat of MF.
- Subjects
INTERNAL fixation in fractures; ANKLE joint; ANKLE fractures; CROSS-sectional method; FIBULA injuries; COMPARATIVE studies; FRACTURE fixation; DESCRIPTIVE statistics; RESEARCH funding; COMPUTED tomography; DATA analysis software
- Publication
Journal of Orthopaedic Surgery & Research, 2023, Vol 18, Issue 1, p1
- ISSN
1749-799X
- Publication type
Article
- DOI
10.1186/s13018-023-04194-6