Mechanical characteristics of different osseous alloplastic materials

Comparative study of two plastic materials, i.e. frozen cortical allobone and demineralized perforated (perfoost) was performed. Testing the samples from same part tibia carried out using Zwick 1464 apparatus. It showed that firmness perfoost lower than allobone: during compression - by 33%, switching 66%, bending 46% for metaphyseal sample 70% diaphyseal one. Perfoost possesses rigidity allows to use this graft in marginal resection as well osteotomy a bone fixator. Advisability segmental extremity without allograft is doubtful.