Anatomic double bundle ACL reconstruction outperforms any types of single bundle ACL reconstructions in controlling dynamic rotational laxity

• Published in: Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA sports traumatology, arthroscopy : official journal of the ESSKA, 2018-05, Vol.26 (5), p.1414-1419
• Main Authors: Maeyama, A., Hoshino, Y., Kato, Y., Debandi, A., Lertwanich, P., Wang, J. H., Smolinski, P., Fu, F. H.
• Format: Article
• Language: English
• Subjects: Acceleration; Accelerometers; Bundling; Cadavers; Femur; Footprints; Knee; Medicine; Medicine & Public Health; Orthopedics; Skin & tissue grafts
• ISSN: 0942-2056; 1433-7347
• DOI: 10.1007/s00167-017-4781-6

Purpose To compare the different types of ACL reconstructions in terms of knee dynamic laxity evaluated by acceleration. Methods Sixteen fresh frozen cadaveric knees were used. Pivot shift test was manually performed while monitoring the tibial acceleration by use of a triaxial accelerometer. The test was repeated before and after the ACL resection and reconstruction. Three types of ACL reconstruction were tested: (1) Anatomic Single-Bundle reconstruction ( n  = 8), the graft was placed at the center of the ACL footprint for the both femoral and tibial sides (tunnel diameter: 8mm); (2) Conventional Single-Bundle reconstruction ( n  = 8), the graft was placed from the tibial PL footprint to femoral high AM position (tunnel diameter: 8mm) and (3) Anatomic Double-Bundle reconstruction ( n  = 8). The acceleration in each of three x-y-z directions and the overall magnitude of acceleration was calculated to evaluate dynamic rotational laxity and compared between different ACL reconstructions. Results The overall magnitude of acceleration was significantly different between ACL intact and deficient knees ( p