In treatment of tibial fracture, intramedullary nailing has become preferred method. But distal interlocking procedure has been limited in cases of poor skin condition and bony crack near the distal locking site. Also require more radiation and operation time. Blocker-tibial nails are available for that cases, reduced the radiation and operation time.

We treated 71 fractures of the tibia by Blocker-tibial nail from Jan. 1990 to Dec. 1994 and we analysed as follow.

1. 69 cases were treated by closed method and 2 cases were treated by open method.

2. Blocker-tibial nail provided rigid fixation of fracture and it made early exercise of joint motion and ambulation.

3. There were 6 cases of complication with a little impairment of function finally; non-union(1). deep infection(1), irritation by nail protrusion(2), rotation deformity(1) and nail bending(1).

4. The advantages of Broocker-tibial nail are as follows;

(1) Reduction of operation time and irradiation.

(2) Relative firm fixation in spite of distal skin problem and bony problem.