摘要目的探讨不同年龄和性别儿童下肢脊柱关节炎中最常受累肌腱端的超声解剖结构。方法纳入研究的41名(女20名,男21名;年龄2~15岁)健康儿童分成4个年龄组:2~4岁(n=9),5~7岁(n=11),8~12岁(n=12),13~15岁(n=9)。对每个肌腱端行超声横断和纵向扫查。根据不同年龄、性别及解剖部位评估下肢肌腱端的软骨、肌腱结构和血管的组成。结果 B超显示软骨和肌腱的厚度与年龄呈正或 Abstract Objective To investigate the ultrasound anatomy of tendon end of the most commonly involved spondyloarthritis of lower limbs in children of different ages and genders. Methods Thirty-one (20 males, 21 males and 2 to 15 years old) healthy children enrolled in the study were divided into four age groups: 2 to 4 years (n = 9), 5 to 7 years ~ 12 years old (n = 12), 13 ~ 15 years old (n = 9). Ultrasound transection and longitudinal scan were performed on each tendon end. The composition of the cartilage, tendon structures and blood vessels at the tendon end of the lower limbs was evaluated according to age, sex and anatomy. Results B-ultrasound showed cartilage and tendon thickness and age were positive or negative