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Minimally Invasive Surgery
Volume 2015, Article ID 638635, 7 pages
Clinical Study

Stability Outcomes following Computer-Assisted ACL Reconstruction

1Division of Sports Medicine, Boston Children’s Hospital, Boston, MA 02215, USA
2Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA 02114, USA
3Department of Orthopaedic Surgery, Rhode Island Hospital, Brown University, Providence, RI 02903, USA
4Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710, USA
5Department of Information Services, Rhode Island Hospital, Lifespan, Providence, RI 02903, USA

Received 29 August 2014; Revised 15 March 2015; Accepted 17 March 2015

Academic Editor: Peng Hui Wang

Copyright © 2015 Melissa A. Christino et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Purpose. The purpose of this study was to determine whether intraoperative prereconstruction stability measurements and/or patient characteristics were associated with final knee stability after computer-assisted ACL reconstruction. Methods. This was a retrospective review of all patients who underwent computer-assisted single-bundle ACL reconstruction by a single surgeon. Prereconstruction intraoperative stability measurements were correlated with patient characteristics and postreconstruction stability measurements. 143 patients were included (87 male and 56 female). Average age was 29.8 years (SD ± 11.8). Results. Females were found to have significantly more pre- and postreconstruction internal rotation than males (P < 0.001 and P = 0.001, resp.). Patients with additional intra-articular injuries demonstrated more prereconstruction anterior instability than patients with isolated ACL tears (P < 0.001). After reconstruction, these patients also had higher residual anterior translation (P = 0.01). Among all patients with ACL reconstructions, the percent of correction of anterior translation was found to be significantly higher than the percent of correction for internal or external rotation (P < 0.001). Conclusion. Anterior translation was corrected the most using a single-bundle ACL reconstruction. Females had higher pre- and postoperative internal rotation. Patients with additional injuries had greater original anterior translation and less operative correction of anterior translation compared to patients with isolated ACL tears.