Blocked nailing lengthening of the femur at teenagers at the acquired unilateral shortening

Lantsov Vladimir Vladimirovich, Voloshin Victor Parfentievich

Lengthening of a femur at the unilateral acquired shortening at teenagers remains to one of the most relevant problems of modern children's orthopedics as process of lengthening is considerable on time (about one year), and, taking into account the expressed psychoemotional lability of teenagers, is difficult in respect of adequate realization of a goal in the form of full compensation of shortening. Throughout many centuries doctors are in search of optimum methods of lengthening of bones of extremities – since times of ancient Egypt attempts of alignment of lengths of extremities when shortening one of them were made, hundreds of distraction systems are invented and introduced in practice, the principles of a distraction osteosynthesis, especially after G.A. Ilizarov's works are proved and scientifically proved, however, and now orthopedists meet a large number of complications at operations on lengthening of bones of extremities (deformations of the regenerate, fractures of the regenerat, infection, suppuration, the slowed-down consolidation of the regenerat, formation of false joints in the field of an osteotomiya, etc.). There is no optimum, the existing systems deprived of shortcomings, a technique of lengthening of a femur at teenage age now. Taking into account it, we made an attempt to approach as much as possible a "ideal" method of lengthening of a femur at the unilateral acquired shortening with application of a combination from the rod distraction unilateral device and blocked intramedullary nailing. For realization of this purpose we set the following tasks: the analysis of the existing lengthening techniques; assessment of results of surgical lengthening of a femur at treatment of unilateral post-traumatic shortenings and shortenings after epiphisis osteomyelitis by the offered combined technique; comparison of techniques of lengthening on the landmark blocked nail and a method of the "isolated" lengthening in the distraction device.

Keywords:shortening; lengthening; femur; rod device; the intramedullary blocked nail