Bone remodeling commonly occurs after fracture and curettage benign bone tumor. A lot of previous articles reported “internal” trabecular bone remodeling. There were no previous clinical reports about “external” cortical bone remodeling. We present here 2 clinical cases of “external” bone remodeling after injectable calcium-phosphate in benign bone tumor in the hand. We performed completely removal of the tumor and immediate filling of the metacarpal bone with injectable calcium-phosphate cement from the mechanical point of view. Five and 8 years after the operation respectively, both cases had no recurrences, and the shape of the metacarpal looked close to the contralateral side. These findings could be related with potential self-healing mechanism in human body.