贵刊91年第4期刊登了沈世林老师的题为《如何判定图中的挠、尺骨》一文。笔者认为这篇文章对判定挠、尺骨讲解得很清楚、透彻,但文中的判定方法,是根据课外的补充知识加以判定的,较难理解和掌握,不便学生接受。笔者认为有另一更为简单的判定方法。尺骨、挠骨都是肘关节的组成部分,虽然挠骨会围绕尺骨转动,但它们在肘关节中的位 In your 4th issue of 91st issue, you published the article titled “How to Determine the Flexion and Ulnaness in the Figure” by Shen Shilin. The author believes that this article is very clear and thorough in deciding to correct the ulna and ulna. However, the judgment method in the text is judged based on extra-curricular knowledge, which is difficult to understand and master. It is inconvenient for students to accept. I think there is another simpler method of determination. The ulna and flexor are all part of the elbow joint. Although the flexion bone rotates around the ulna, their position in the elbow joint