Intraoperative evaluation of anteroposterior and rotational stabilities in anterior cruciate ligament reconstruction: lower femoral tunnel placed single-bundle versus double-bundle reconstruction

Kanaya Atsushi

Ochi Mitsuo

Deie Masataka

Adachi Nobuo

Nishimori Makoto

Nakamae Atsuo

Knee Surgery, Sports Traumatology, Arthroscopy

Twenty-six patients with anteroposterior (AP) laxity of the knee, associated with torn anterior cruciate ligament (ACL), were prospectively randomized for arthroscopic lower femoral tunnel placed single- or double-bundle reconstruction using hamstring tendons. We evaluated AP and rotational stabilities under regular loads (a 100-N anterior load and a 1.5-N m external–internal load) before and after ACL reconstruction, comparing single- and double-bundle reconstruction with our original device for applying quantitative tibial rotation and the navigation system intraoperatively. No significant differences were found between the two groups in AP displacement and total range of tibial rotation at 30° and 60° of knee flexion. We found that a lower femoral tunnel placed single-bundle reconstruction reproduced AP and rotational stability as well as double-bundle reconstruction after reconstruction intraoperatively.

ACL reconstruction

Anteroposterior stability

Rotational stability

Navigation system

Intraoperative evaluation

Medical sciences [ 490 ]

eng

Springer

Copyright (c) 2009 Springer

The original publication is available at www.springerlin.com

[ISSN] 0942-2056

[DOI] 10.1007/s00167-009-0757-5

[NCID] AA10973641

[DOI] http://dx.doi.org/10.1007/s00167-009-0757-5