Morphological Analysis and Classification of Posterior Malleolar Fractures Based on CT Scans

Completed

• Conditions: CT Scans; Morphological Analysis and Classification; Posterior Malleolar Fractures

• Registration Number: NCT05159258
• Lead Sponsor: Peking University People's Hospital

Brief Summary

The study was to propose a classification system of posterior malleolar fractures by fracture lines with the use of CT scans, including 3D CT reconstruction, which can better understand morphological characteristics, analyze the mechanism and guide the surgeon to choose optimal approach and fixation.

Detailed Description

The investigators retrospectively analyzed consecutive patients with ankle fractures from January 2013 and December 2019 . Participants were included with OTA/AO type 44 fractures involving posterior malleolus and CT scans. The exclusion criteria were: (1) previous ankle surgery; (2) pathological fractures; (3) previous deformity in ankle joint; (4) age ≤16 years old. Finally, A total of 128 patients were included in this study. 128 consecutive participants with posterior malleolar fractures from January 2013 and December 2019. CT data were loaded into Mimics software (V20.0, Materialize), in which 3D CT reconstruction, morphological analysis and data measurements were made. Statistical analysis was performed using the Statistical Packages for Social Sciences V23.0 (SPSS, Chicago, IL, USA). Mann-Whitney U test were used. P value of \< 0.05 was considered statistically significant.

Study Timeline

• Study Start: 2013-01-01
• Primary Completion: 2020-06-01
• Study Completion: 2020-11-01
• Study First Submitted: 2021-11-18
• Status Verified: 2021-12
• Study First Submitted QC: 2021-12-02
• Last Update Submitted: 2021-12-02
• Study First Posted: 2021-12-16
• Last Update Posted: 2021-12-16

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 128

Inclusion Criteria

• OTA/AO type 44 fractures involving posterior malleolus and CT scans

Exclusion Criteria

• Previous ankle surgery
• Pathological fractures
• Previous deformity in ankle joint
• Age ≤16 years old

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
area of posterior malleolar fragment	2013-2019
area of remaining stable plafond	2013-2019
length of involving fibular notch	2013-2019
posterior malleolar fracture classification	2013-2019	Haraguchi, Bartonicek and Mason \& Molloy classification
length of remaining fibular notch	2013-2019