Anterior Cruciate Ligament Rupture Clinical Trial
Official title:
Anatomic and Biomechanical Investigation on Anterior Cruciate Ligament: A Cadaveric Study
The present study was aimed to investigate the kinematics differences between round-tunnel (ROT) and flat-tunnel (FLT) techniques and compare the influence to the anterior root of lateral meniscus (ARLM ) in anterior cruciate ligament (ACL) reconstruction when using hamstring graft.
Nine matched pairs of fresh-frozen cadaveric knees were evaluated for the kinematics of intact, ACL-sectioned, and either ROT or FLT reconstructed knees. The graft bundles for FLT technique were separately tensioned. A 6 degrees of freedom robotic system was used to assess knee laxity: (1) 134-N anterior tibial load at 0°, 15°, 30°, 60°, and 90°of knee flexion. (2) 10-Nm of valgus torque followed by 5-Nm of internal rotation torque simulates a pivot-shift test at 15°, 30°. (3) 5-Nm internal and external rotation torques at 0°, 15°, 30°, 60°, and 90°. (4) 10-Nm varus and valgus torques at 15°, 30°. Coverage of ACL tibial footprint and areas of ARLM attachment before and after reaming were measured using three-dimensional isotropic MRI scanning. ;
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