Evaluation of the biomechanical and structural properties of bone allografts treated with a new cleaning process

The use of allograft bone is becoming increasingly common. intrinsic mechanical and structural properties the graft are major importance for osseointegration. Current cleaning treatments using chemical or physical products increase biosafety but may disturb these characteristics. A new treatment cancellous cortical by simple washing (sonication centrifugation) supercritical carbon dioxide (scCO2) was developed. allografts cleaned with this were compared those obtained after preservation freezing at −80°C. Three-point bending, compression hardness tests performed biomechanical analysis. characteristics evaluated microscanner (histomorphometry) scanning electron microscopy (surface analysis). All data showed that generally stiffer owing to delipidation its structure remained similar frozen bone. Bone thus displayed close