AUTHOR=Hong Pan , Tan Wei , Zhou Wei-Zheng , Zheng Yu , Li Jin , Zheng PengFei , Tang Xin 

TITLE=The relation between radiographic manifestation and clinical characteristics of congenital radioulnar synostosis in children: A retrospective study from multiple centers

JOURNAL=Frontiers in Pediatrics

VOLUME=Volume 11 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2023.1117060

DOI=10.3389/fped.2023.1117060

ISSN=2296-2360

ABSTRACT=Objective: To review the radiographic manifestation and clinical appearance of children with congenital radioulnar synostosis (CRUS) retrospectively. 
Study design: Retrospective cohort study of children with CRUS from multiple medical centers. 
Results: A total of 329 patients (male 259, female 70) with an average age of 5.4 years (0.5 - 16 years old), were included in this study. In particular, 145 patients (145/329, 44.1%) demonstrated bilateral involvement, and 184 patients (left 123, right 61) demonstrated unilateral involvement. As for Clear and Omery (C&O) classification, most patients belonged to Type III, and then followed by Type IV. As for Chinese Multi-center Pediatric Orthopedic Study Group (CMPOS) classification, most patients belonged to Type III, and then followed by Type II and Type I. In C&O Type III, 92.03% patients demonstrated severe pronation. According to CMPOS classification, 92.98% Type I patients demonstrated neutral to mild pronation, 72.17% Type II patients demonstrated moderate pronation, and 92.03% Type III patients demonstrated severe pronation.
Conclusion: Although CRUS is a rare forearm deformity, there are certain relation between radiographic manifestation and clinical forearm functional restriction. CRUS patients of C&O or CMPOS Type III classification might suffer severe pronation deformity and warrant early intervention.