Osteotwin™ Composite Interference Screw is composed of 75% PLDLLA + 25% BCP.
Osteotwin™ Composite Interference Screw provides the convenient ratio between the necessary mechanical resistance for the indication and the faculty to generate bone growth.
The addition of mineral charge in the polymer matrix increases the osteoconductivity of the implant. BCP (biphasic calcium phosphate) is an osteoconductive material known to promote bone ingrowth as the screw resorbs (Sharp et al. 2018; Debieux et al. 2016; Daculsi et al. 2011). The addition of BCP to PLDLLA interference screws used in ACL reconstruction reduces the speed of resorption while improving ossification, reducing tunnel widening and increasing cortical formation. The benefits of osteoconductive additives are more discernible in the tibia than in the femur (Barth J. et al., Orthopaedic Journal of Sports Medicine 4 (5), 2016).