Anatomical Study And Clinical Application Of Typing And Grading Severed Digits

In the early 20 century, some scholars set up the study on microvascular anastomosis techniques (MAT) and get some initial data of blood flowing dynamics of the small replanted vessel. The results of the study made a good basis for the application of MAT to clinic. In the 1960s, Malt RA and Ch'En CW, with the help of their assistants, replanted successfully the completely amputated human limb respectively and the latter reported firstly. In 1965, Komutsu S and his colleagues succeeded in reattaching a severed thumb. Since then, with the development of the techniques of replanting, a large number of severed digits (SD) data were accumulated in clinic. Thus, it is necessary to classify SD during the course of communication and study.The scientific classification of SD not only can provide the standard to carry through learning communication, but also can promote the level of research, diagnosis and treatment on SD replanting, reconstructing, repairing and so on. We have studied and reviewed the anatomical basis of classification of SD and given the typing and grading SD (TGSD) due to a combination cases, then, discussed firstly the clinical value about this method.Objective To give a more scientific classifying method of SD and discuss the way to carry on this work.Methods We established TGSD through the anatomical characteristic of normal adult digits, the clinical cases and the taxology method. We also discussed the feasibility of TGSD and its application value to acute reconstruction of digits via clinically practicing and comparatively studying.Results (1) In a finger, there are included in bone, tendon, vessel, nerve, skin andso on. (2) There are and IV 4 types and a, b, c, d and d 5 grades in TGSD. (3) All SD have the only typing and grading (TG). (4) Give the supplementary types about the 1st metacarpal bone to it, TGSD can be application to those SD which should be reconstructed acutely.Conclusion (1) The anatomical characteristic of hand and finger is the important basis for classifying SD. (2) TGSD is a feasible and new classification method of SD, which provide a more individual classifying standard for counting, summarizing and communicating. (3) TGSD can be used for acute digit reconstruction and can make up for the weaknesses about the application of degree of damaged finger (DDF, CC, Chen's classification) to no lacked fingers' classification. (4) TGSD perhaps can promote the theoretical study on SD replanting, reconstructing and repairing.