Sasaki Takahide, Teraguchi Masatoshi, Mure Kanae, Asai Yoshiki, Kido Yusuke, Onishi Makiko, Shimoe Takashi, Miyai Nobuyuki, Nakagawa Yukihiro, Hashizume Hiroshi, Yamada Hiroshi
Department of Orthopaedic Surgery, Kihoku Hospital, Wakayama Medical University, Katsuragi Town, Wakayama, Japan.
Department of Orthopaedic Surgery, Wakayama Medical University, Wakayama City, Wakayama, Japan.
PLoS One. 2025 Jan 24;20(1):e0318014. doi: 10.1371/journal.pone.0318014. eCollection 2025.
The accessory navicular (AN) is an accessory bone located on the posteromedial aspect of the navicular tuberosity that can cause pain following overuse or trauma, particularly during childhood. However, the detailed epidemiological characteristics of AN in children have not been well studied. This study aimed to clarify the prevalence of AN and painful AN among Japanese children by examining the characteristics according to sex and age. This cross-sectional study used data from the Katsuragi Integrated Defense for Locomotive Syndrome in Children Study, focusing on musculoskeletal disorders in 875 children aged 6-15 years, with 1750 feet being assessed. Children were divided into five age groups: 6-7, 8-9, 10-11, 12-13, and 14-15. AN was detected using ultrasound to avoid radiation exposure. The sex- and age-group-dependent prevalence of AN and painful AN were calculated, and statistical analyses examined sex differences in prevalence by age group. The overall prevalence of AN was 15.1%, higher in females (17.9%) than in males (12.3%). The prevalence of AN increased with age in both sexes. Among cases diagnosed with AN, 20.8% were symptomatic, with a unimodal peak observed at ages 12-13 in males and 10-11 in females. No statistically significant differences were observed in the proportion of painful AN between sexes. This is the first large-scale epidemiological study on AN in children. The overall prevalence of AN was 15.1%, higher in females than in males. Additionally, 20.8% of patients with AN experienced pain. The results of this study provide important epidemiological data to support clinical management strategies for pediatric patients with AN.
副舟骨（AN）是位于舟骨粗隆后内侧的一块附属骨，过度使用或外伤后可引起疼痛，尤其是在儿童期。然而，儿童副舟骨的详细流行病学特征尚未得到充分研究。本研究旨在通过检查日本儿童按性别和年龄的特征，阐明副舟骨和疼痛性副舟骨的患病率。这项横断面研究使用了来自儿童机车综合征桂木综合防御研究的数据，重点关注875名6至15岁儿童的肌肉骨骼疾病，共评估了1750只脚。儿童被分为五个年龄组：6 - 7岁、8 - 9岁、10 - 11岁、12 - 13岁和14 - 15岁。使用超声检测副舟骨以避免辐射暴露。计算了副舟骨和疼痛性副舟骨按性别和年龄组的患病率，并进行统计分析以检验各年龄组患病率的性别差异。副舟骨的总体患病率为15.1%，女性（17.9%）高于男性（12.3%）。男女患病率均随年龄增加。在诊断为副舟骨的病例中，20.8%有症状，男性在12 - 13岁、女性在10 - 11岁时出现单峰峰值。男女之间疼痛性副舟骨的比例未观察到统计学显著差异。这是第一项关于儿童副舟骨的大规模流行病学研究。副舟骨的总体患病率为15.1%，女性高于男性。此外，20.8%的副舟骨患者经历过疼痛。本研究结果提供了重要的流行病学数据，以支持儿童副舟骨患者的临床管理策略。
