[Case analysis on problem-based learning of acupuncture: "a turning round before birth"].

"A turning round before birth" is a problem-based learning (PBL) case in Chinese medicine education. It focuses on malposition of fetus, through discussion on a series of questions, types and causative factors of malposition of fetus could be comprehended, diagnostic time and methods are set up, and manipulations of moxibustion at Zhiyin (BL 67) for malposition of fetus can be mastered. Mechanism on position correction is explored, and key points in application are clarified. Therefore, methods of position correction with easy, safe and effective manipulations can be popularized as well as the PBL methods in education of Chinese medicine.