Studying the strength of the tibia during the replacement of a post-resection defect with a segmental allograft using locked intramedullary nailing (experimental clinical study)

Background. To achieve success in the incorporation of allografts and bone recipient, many factors are taken into account, which can be divided two main groups: those related to sterilization processing allograft affecting reliability implant fixation recipient. The second important factor is method for fixing purpose was determine mechanical properties after segmental alloplasty. Materials methods. Female patient Sh., 30 years old, diagnosed with osteosarcoma left distal tibia T2N0M0 GIII, degree II, clinical group underwent polychemotherapy courses, surgical intervention according developed method. tumor removed en block, a post-resection defect replaced an articulating allograft, fixed recipient’s through stepped osteotomy intramedullary locked nail. Bone autografts were additionally placed area contact bone. After 2 years, surgery: amputation at third thigh. Radiographically, fusion noted. An experimental study tensile strength alloplasty carried out using technique allograft. Results. compare results preparation alloplasty, data about values ultimate tissue under compression bending loads selected. As shown by experiment, its 51.82 MPa. This value corresponds minimum compact — 51 Although this twice as low maximum (133 MPa), it should borne mind that all given reference obtained when testing intact preparations Conclusions. use replace long nailing additional autoplasty makes possible obtain zone bone, tissue.