Biodegradable Interference Screw Fixation Exhibits Pull-Out Force and Stiffness Similar to Titanium Screws:

摘要: Recently, increased interest in biodegradable interference screws for bone-tendon-bone graft fixation has led to numerous becoming available. The implants are made from different polymers and have designs, which might influence their mechanical properties. Several studies reported a wide range of results these using biomechanical models. aim the present study is compare reliable data six screws, consisting five polymers, with conventional titanium screw standardized model. Seventy proximal calf tibias were used determine maximal pull-out force, stiffness fixation, insertion torque grafts. Additionally, at failure was determined. Data analyzed respect aspects design, such as drive thread shape. Five provided initial force comparable that screw. Torque can be greatly by adapting design properties polymeric raw material. A correlation between height indicates rigidity depends on even implant.