Biomechanical studies on the bone juncture of massive allograft

Abstract

Aim: To study the theoretical basis of a more adaptive project in dealing with bone juncture. Methods. Twenty-five fresh porcine femurs were randomly divided into five groups: transversely resected group, obliquely resected group, stepladder-shaped resected group, 30 degrees resected "V" -shaped group and 45 degrees resected "V"-shaped group. So, such biomechanical experiments as compression rigidity, torsion rigidity and maximal torsion were carried out, and the steadiness of differently resected bones were observed. Results. In the test of torsion rigidity, the situation of 45 degrees resected group showed the best, 30 degrees resected group ranked the second and that of the transversely resected group list the worst. 45 degrees resected "V"-shaped bone fractured when burdened with the maximal twisting force, while the 30 degrees resected "V" -shaped bones did not fracture in the same test for their better properties of anti-compression and anti-torsion. Conclusion. The 30 degrees "V" shape resection manner can provide a better interface and more reliable initial steadiness for the bone juncture.