During the period from 1983 to 1989, 77 children with supracondylar fractures of the humerus which could be followed for more than 6 months were treated by closed reduction and percutaneous pinning.

The result of clinical survey of 77 children was presented. The resuit was as follows:

1. The average age of children was 6.8 years, male and female ratio was 4:1.

2. Seventy-fou. cases (96%) were the extension type and 3 cases(4%) we.e the flexion type. In extension type, 43 cases(58%) were Gartland type II, 23 cases (31%) were Gartland type III-A and 8 cases(11%) were Gartland type III-B.

3. In the pattern of percutaneous pinning, the crossed pinning by 2 Kirschner-wires was 60 cases (78%), the paralleled pinning by 2 Kirschner-wires was 5 cases(7%), the crossed pinning by 3 Kirschner-wires was 11 cases(14%)and paralleled pinning by 3 Kirschner-wires was 1 case(1%).

4. Complications included transient ulnar nerve injury 9 cases, pin tract infection 1 case, cubitus varus deformity 2 cases, migration of pin 2 cases and redisplacement 2.

5. In functional results according to Flynns method, the satisfactory results were 73 cases (95%), and the unsatisfactort results were 4 cases(5%).