The clinic study included 31 patients with fracture of upper end of humerus. 17 patients were treated with pyritum and magnet. 14 patients were treated with placebo.

• 临床研究选择合乎标准的肱骨近端骨折患者31例，以自然铜和磁联合治疗17例，以安慰剂治疗14例作为对照，观察临床上疼痛、肿胀、功能的变化情况、骨痂生长情况和骨折临床愈合所需的最短时间。