Application of ultrasound in the early diagnosis of congenital patellar dislocation: a case description - Yan, Zhiheng; Yao, Yanwu; Yang, Qiongyu; Ma, Bin; Li, Tiangang; Wang, Yixuan (Quantitative Imaging in Medicine and Surgery; Vol 13, No 10 (October 01, 2023): Quantitative Imaging in Medicine and Surgery, 2023)