Imaging types of double-column die-punch fracture of the distal radius: fracture classification and mechanical mechanism

doi:10.3969/j.issn.2095-4344.0358

Abstract

Abstract:

BACKGROUND: According to the three-column theory, there are single-column and double-column die-punch fractures of the distal radius. The single-column die-punch fracture has been reported, but there is a lack of study on double-column die-punch fracture.

OBJECTIVE: To explore the characteristics and imaging types of double-column die-punch fracture of the distal radius as well as the value of the new classification.

METHODS: A retrospective analysis of imaging data was made in 498 cases of double-column die-punch fracture of the distal radius between June 2007 and June 2017. According to the imaging characteristics of the fracture, the patients were divided into types of metaphysis, articular surface and mixed. Two radiologists were chosen and independently typed the fractures in 100 cases of double-column die-punch fracture of the distal radius, and agreement was analyzed with Kappa statistics.

RESULTS AND CONCLUSION: (1) In 498 cases of double-column die-punch fracture of the distal radius, type of metaphysis was found in 130 cases, type of articular surface in 156 cases and mixed type in 212 cases, and all were categorized. (2) The inter-observer Kappa coefficient was 0.823-0.868 and the intra-observer Kappa coefficient was 0.868-0.900, showing high consistency. (3) According to AO classification of fracture, the type of articular surface belonged to type B or type C, type of metaphysis and the mixed type belonged to type C. (4) These results suggest that the new imaging typing of double-column die-punch fracture of the distal radius well reflects the mechanical characteristics and fracture site, meets the principle of AO classification, has high consistency and provides reference for clinical treatment and prognosis judgment.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: Radius Fractures, Biomechanics, Tissue Engineering

CLC Number:

R318

Xi Bin, Yang Ying, Li Dong-cheng, Ding Yan-ping, Yin Qu-dong. Imaging types of double-column die-punch fracture of the distal radius: fracture classification and mechanical mechanism [J]. Chinese Journal of Tissue Engineering Research, 2018, 22(27): 4405-4409.

Figures/Tables 1

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