[Possible uses for callus distraction. Bridging bone defects and bone lengthening in leg length inequality]

Representation of the possibilities of callus distraction for bridging bone defects on the basis of four typical cases successfully treated with this procedure.

The filling of large diaphyseal bone defects through the use of callus distraction is reliable, relatively simple to carry out, and in most cases can be done on an outpatient basis. After prior osteotomy, a segment of the remaining bone is forced, millimeterwise, into the defect zone. As a result of continuous distraction of the callus forning in the osteotomy, tubular bone with weight-bearing capability is formed, and the patient is spared the defect resulting at the donor site when an autologous bone graft is taken, or the implantation of exogenous material. The same principle is employed for leg lengthening, and also permits simultaneous compensation of axis malalignment.