title: Adolescent differences in knee stability following computer-assisted anterior cruciate ligament reconstruction.
abstract: Anterior cruciate ligament (ACL) surgery is being increasingly performed in the adolescent population. Computer navigation offers a reliable way to quantitatively measure knee stability during ACL reconstruction. A retrospective review of all adolescent patients (<18 years old) who underwent computer-assisted primary single bundle ACL reconstruction by a single surgeon from 2007 to 2012 was performed. The average age was 15.8 years (SD 3.3). Female adolescents were found to have higher internal rotation than male adolescents both pre- (25.6° vs 21.7°, P=0.026) and post-reconstruction (20.1° vs 15.1°, P=0.005). Compared to adults, adolescents demonstrated significantly higher internal rotation both pre- (23.3° vs 21.5°, P=0.047) and post-reconstruction (17.1° vs 14.4°, P=0.003). They also had higher total rotation both pre- (40.9° vs 38.4°, P=0.02) and post-reconstruction when compared to adults (31.56° vs 28.67°, P=0.005). In adolescent patients, anterior translation was corrected more than rotation. Females had higher pre- and residual post-reconstruction internal rotation compared to males. When compared to adults, adolescents had increased internal rotation and total rotation both pre-and post-reconstruction.
authors.affiliation: Department of Orthopedic Surgery, The Warren Alpert Medical School of Brown University , Providence, RI.
authors.forename: Melissa A
authors.initials: MA
authors.lastname: Christino
authors.affiliation: Department of Orthopedic Surgery, The Warren Alpert Medical School of Brown University , Providence, RI.
authors.forename: Bryan G
authors.initials: BG
authors.lastname: Vopat
authors.affiliation: Department of Orthopedic Surgery, The Warren Alpert Medical School of Brown University , Providence, RI.
authors.forename: Gregory R
authors.initials: GR
authors.lastname: Waryasz
authors.affiliation: Department of Orthopedic Surgery, The Warren Alpert Medical School of Brown University , Providence, RI.
authors.forename: Alexander
authors.initials: A
authors.lastname: Mayer
authors.affiliation: Department of Information Services, Lifespan - Rhode Island Hospital , Providence, RI, USA.
authors.forename: Steven E
authors.initials: SE
authors.lastname: Reinert
authors.affiliation: Department of Orthopedic Surgery, The Warren Alpert Medical School of Brown University , Providence, RI.
authors.forename: Robert M
authors.initials: RM
authors.lastname: Shalvoy
keywords: anterior cruciate ligament; computer navigation; knee stability; pediatric