An introduction of blocking osteosynthesis was recently included into practice of treatment of forearm fractures. The forearm has a very difficult biomechanics and extremely important functional value. There are really high requirements to accuracy of reposition and stability of forearm fracture fixation. The blocking osteosynthesis successfully combines fixation stability with functionality, although its performance technique isn’t so simple, that forces experts to use other methods of fixation. It is possible successfully use advantages of the method by studying and keeping variety of operation nuances of blocking osteosynthesis on forearm in order to restore anatomy, biomechanics and obtain the stable fixation. The period of rehabilitation could be combined with period of union of bones in this case without postoperative complications such as nonunion of bones, construction fractures and instability of osteosynthesis. The method would be optimal provided that a surgeon masters the technique of construction implantation. There are maximum advantages in treatment of complicated fractures (nonunion of bones, false joint and defects) due to functionality of the method.