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Updated: Jan 25, 2026
A Method for Studying the Temperature Dependence of Dynamic Fracture and Fragmentation
Published on: June 28, 2015
Characteristics of intercalary fragment in posterior malleolus fractures
Faisal Sultan1, Xiaodong Zheng2, Zhijun Pan1
1Department of Orthopaedics, The Second Affiliated Hospital, Medical School of Zhejiang University, 88 Jiefang Road, Hangzhou, 310009 China.
Background:
The purpose of the study is to investigatethe prevalence of posterior malleolus intercalary fragment (ICF) in adult ankle fractures; to analyze the morphological characteristics of ICF; and its mechanism.
Methods:
Retrospectively, 247 cases of posterior malleolus fractures (PMF) were included in 369 cases of adult ankle fractures. The prevalence of ICF, relationship between type of ankle fracture, posterior malleolar fracture and the ICF was studied.
Results:
Among 369 cases, the ICF was found in 43% of the PMF and 29% of the hospitalized unstable ankle fractures. Position of ICF is posterolateral in 68 (64%), mid posterior in 20 (19%) and posteromedial in 18 (17%) cases. The prevalence of ICF was 70% in Bartoníček classification type III fractures, which was significantly higher than type I, II and IV.
Conclusions:
The highest incidence occurs in Bartoníček III type fracture. The study helps in further understanding and treatment of the PMF.
Level Of Evidence:
Level IV, case series.
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