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ArticleInternational journal of legal medicine2025

Forensic age estimation using Dedouit classification in adolescents of the Southwestern Chinese Han population based on the knee MRI.

Xiao-Dong Deng, Qi Leng, Fei Fan, Yi-Si Huang, Wei Zhang, Li-Xia Zhang, Yun Liu, Zhen-Hua Deng

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Article in International journal of legal medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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8 authors.

Xiao-Dong DengDepartment of Forensic Pathology, School of Basic Medical Sciences & Forensic Medicine, North Sichuan Medical College, Nanchong, 637000, Sichuan, P.R. China.ORCID http://orcid.org/0000-0002-6691-6914
Qi LengDepartment of Forensic Pathology, School of Basic Medical Sciences & Forensic Medicine, North Sichuan Medical College, Nanchong, 637000, Sichuan, P.R. China.
Fei FanDepartment of Forensic Pathology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, P.R. China.
Yi-Si HuangDepartment of Forensic Pathology, School of Basic Medical Sciences & Forensic Medicine, North Sichuan Medical College, Nanchong, 637000, Sichuan, P.R. China.
Wei ZhangDepartment of Forensic Pathology, School of Basic Medical Sciences & Forensic Medicine, North Sichuan Medical College, Nanchong, 637000, Sichuan, P.R. China.
Li-Xia ZhangDepartment of Forensic Pathology, School of Basic Medical Sciences & Forensic Medicine, North Sichuan Medical College, Nanchong, 637000, Sichuan, P.R. China.
Yun LiuDepartment of Forensic Pathology, School of Basic Medical Sciences & Forensic Medicine, North Sichuan Medical College, Nanchong, 637000, Sichuan, P.R. China. xyun2005@163.com.
Zhen-Hua DengDepartment of Forensic Pathology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610041, Sichuan, P.R. China. dengzhenhua@scu.edu.cn.

Funding

Cooperation Project between North Sichuan Medical College and Local Government 22SXQT0177Doctoral Scientific Research Startup Fund of North Sichuan Medical College CBY23-QDA30Doctoral Scientific Research Startup Fund of North Sichuan Medical College CBY24-QDA14Key Research and Development Program of Sichuan Province of China 2024YFFK0057Natural Science Foundation of Sichuan Province 2022NSFSC1286the National Natural Science Foundation of China 82402197
6 · The paper itself

Abstract

backgroundEthical concerns regarding radiation exposure from conventional imaging examinations for forensic age estimation persist globally. Accumulating results show that magnetic resonance imaging (MRI) of the knee may be an alternative, noninvasive, and reliable method for forensic age estimation. In the present study, we firstly investigate the utility for age estimation by ossification stages of the distal femoral epiphyses and proximal tibial epiphyses via knee MRI in adolescents of the southwestern Chinese Han population using the five-stage system described by Dedouit et al.

methodsWe retrospectively evaluated the coronal fat-suppressed proton density (FS-PD) taken upon 3.0-T MRI of 675 southwest Chinese Han subjects (371 males and 304 females) aged 10-30 years using the five-stage system described by Dedouit et al.

resultsExcellent intra-observer reproducibility and inter-observer reliability were obtained(κ˃ 0.9). The minimum age of distal femoral epiphyses at stage I, II, III, IV, and V was 10.05, 12.09, 14.78, 15.37, and 16.48 years old in males, and 10.54, 12.74, 12.96, 13.66, and 15.21 years old in females. The minimum age of proximal tibial epiphyses at stage I, II, III, IV, and V was 10.05, 11.22, 13.64, 15.37, and 16.48 years old in males, and 10.60, 10.54, 12.56, 12.96, and 15.21 years old in females.

conclusionsIt is suggested that ossification stages of distal femoral epiphyses and proximal tibial epiphyses via knee MRI with coronal FS-PD sequences using Dedouit classification are an alternative, noninvasive, and reliable indicator for age classification at the 12-, 14-, and 16-year thresholds, except for the 18-year threshold, in the southwestern Chinese Han population.

Indexed as

Age Determination by SkeletonEpiphysesFemurKneeOsteogenesisTibiaAdolescentAdultChildChinaEast Asian PeopleFemaleHumansMagnetic Resonance ImagingMaleReproducibility of ResultsAge estimationDistal femoral epiphysesMagnetic resonance imagingProximal tibial epiphyses

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.