In this study, two experimental patterns of autogenous nerve replantation in situ and centrocentral nerve simple suture were performed on the rabbit median and ulnar nerves. By light and transmission electron microscopy and immunohistochemistry, the results showed that autogenous nerve replantation in situ could inhibit neuroma formation, and its mechanism might that two proximal stump axons could conjunct within interpolated graft segment, and the nerve simple suture could not inhibit neuroma development for lack of proper environment for conjunction of two proximal stump axons.

BACKGROUND: People have concerned with the effect of fibroblast growth factor biological protein sponge on the repairing effect of traumatic ulcer.OBJECTIVE: To observe the repairing effect of fibroblast growth factor biological protein sponge on the repairing effect of traumatic ulcer and its possible adverse reactionDESIGN: Grouping comparison observation.SETTING: Staff Room of Physiology, Medical College of Jinan University PARTICIPANTS: Totally 40 cases of traumatic ulcer accepted the treatment in the First Hospital of Jinan Univerity between March 2004 and May 2005 were recruited. Patients with diabetes mellitus and infection on the whole body were excluded. Traumatic ulcer lay in the shank. Patients were randomly divided into experimental group and control group with 20 in each group.INTERVENTIONS: In the experimental group (n=20), sterilized fibroblast growth factor biological protein sponge was used and in the control group (n=20), sterilized petrolatum gauze dressing was used on the wound.Change the gauze dressing once per day until the wound healed. Drugs,which affected wound growth, were not used on the whole body and at the local part. Wound healing status was evaluated 1, 2 and 3 weeks after changing the drugs (The secretion of a wound was divided into: nothing, a little, middling, a great deal. frontier reaction of wound was divided into:nothing, slight, middling, severe.). Pigment deposition and scar was recorded after wound healing.MAIN OUTCOME MEASURES: Healing time of ulcer, healing course of the wound and adverse reaction of the patients in the two groupsRESULTS: Totally 40 patients of the two groups entered result analysis.Wound healing status after treatment of the patients in the two groups: The rate of wound healing in 3 weeks in the experimental group was significantly higher than that in the control group [95% (19/20),55% (11/20),χ2=8.533,P ＜ 0.05]. Wound secretion and peripheral inflammatory reaction of the wound in the experimental group was obviously milder than that of the control group; there was no obvious adverse reaction and scar of the wound found in the two groups.CONCLUSION:FGF biological protein sponge can promote the healing of traumatic ulcer; shorten the healing time without scar and adverse reaction.This dressing is convenient, safe, and non-irritative.