The replantation of penetrating severed finger with disconnected micro tissue blocks in 16 cases

Objective To explore the method of replanting severed piercing finger micro tissue blocks. Methods From February, 2001 to October, 2016, 16 cases of severed piercing finger micro tissue blocks were replanted with debridement. The trunk or branch of proper palmar digital artery was anastomosed. Vascular collocations were used such as venous arterialization when there was no anastomotic artery available. Regular postoperative followed-up was performed to observe the recovery of tissue survival, appearance, sensation of flap, and joint function. Results One case had partial epidermal necrosis, and healed after change of dressing. The finger-disconnected micro tissue blocks of other 15 cases survived well. After 6 months to 2 years of follow-up, the replanted micro tissue blocks were ruddy in color and recovered from S3 to S4. The appearance of the 16 fingers was good, and the function of joints was restored. Conclusion The finger-disconnected micro tissue blocks should be actively replanted. With skilled microsurgical techniques, the anastomosis of the arterial or venous artery will ensure the success of replantation and survived, as well as to restore good function and appearance. Key words: Penetrating severed finger; Micro tissue block; Precise repair; Replantation