Mechanical Evaluation of a Soft Tissue Interference Screw in Free Tendon Anterior Cruciate Ligament Graft Fixation

摘要: In this study of bioabsorbable screw fixation free tendon grafts used in anterior cruciate ligament reconstruction, we performed load-to-failure and cyclic loading porcine bone. Bone density measurements from dual photon absorptometry scans were obtained to correlate bone with failure. The average (1.42 g/cm2) was similar that young human (1.30 significantly higher than elderly cadaveric specimens (0.30 g/cm2). Cyclic on fixed a alone an anchor (polylactic acid ball or cortical disk). Stiffness increased substantially the addition disk polylactic compared interference alone. Tensile strength central quadriceps hamstring superior yielded loads at failure comparable traditional bone-tendon-bone when controlled for density. provided most optimal reduced slippage very low level.