目的研究第二肩关节间隙X线平片测量方法,并统计分析其正常范围。方法对188例正常成人进行常规肩关节前后正位的X线投照,观察、测量肩峰外段前缘和与之平行的肱骨头切线之间的距离(h1)、肩峰最外端与肱骨头结节间沟之间的距离(h2)。结果h1、h2的95%参考值范围分别为6.4~10.4 mm和11.0~17.6 mm。结论h1、h2均能较准确地反映第二肩关节骨性距离,对指导临床诊断及治疗有重要意义。 Objective To study the measurement method of the second shoulder joint radiograph and to analyze the normal range. Methods 188 cases of normal adult X-ray projection of conventional shoulder anteroposterior position, observe and measure the distance between the front edge of the outer shoulder of the shoulder and the humeral head tangential line parallel thereto (h1), the outermost end of the shoulder and The distance between the humeral head nodules (h2). Results The 95% reference values ​​for h1 and h2 ranged from 6.4 to 10.4 mm and from 11.0 to 17.6 mm, respectively. Conclusion Both h1 and h2 can accurately reflect the bony distance of the second shoulder joint, which is of great significance for clinical diagnosis and treatment.