title: Stability Outcomes following Computer-Assisted ACL Reconstruction.
abstract: 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.
authors.affiliation: Division of Sports Medicine, Boston Children's Hospital, Boston, MA 02215, USA.
authors.forename: Melissa A
authors.initials: MA
authors.lastname: Christino
authors.affiliation: Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA 02114, USA.
authors.forename: Bryan G
authors.initials: BG
authors.lastname: Vopat
authors.affiliation: Department of Orthopaedic Surgery, Rhode Island Hospital, Brown University, Providence, RI 02903, USA.
authors.forename: Alexander
authors.identifier: 0000-0003-0659-499X
authors.initials: A
authors.lastname: Mayer
authors.affiliation: Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710, USA.
authors.forename: Andrew P
authors.initials: AP
authors.lastname: Matson
authors.affiliation: Department of Information Services, Rhode Island Hospital, Lifespan, Providence, RI 02903, USA.
authors.forename: Steven E
authors.initials: SE
authors.lastname: Reinert
authors.affiliation: Department of Orthopaedic Surgery, Rhode Island Hospital, Brown University, Providence, RI 02903, USA.
authors.forename: Robert M
authors.initials: RM
authors.lastname: Shalvoy