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Background: Delayed anterior cruciate ligament (ACL) reconstruction (ACLR) is associated with an increased risk of meniscal injury. Limited data are available regarding the relationship between surgical delay and meniscal repairability in the setting of ACLR in young patients. Purpose: To determine whether time from ACL injury to primary ACLR was associated with the incidence of medial and/or lateral meniscal repair in young athletes who underwent meniscal treatment at the time of ACLR. Study Design: Case-control study; Level of evidence, 3. Methods: Records were retrospectively reviewed for patients aged 13 to 25 years who underwent primary ACLR between January 2017 and June 2020 by surgeons from a single academic orthopaedic surgery department. Demographic data were collected, and operative reports were reviewed to document all concomitant pathologies and procedures. Univariable and multivariable logistic regression analyses were used to determine factors associated with meniscal repair, including time elapsed from ACL injury to surgery. Results: Concomitant meniscal tears were identified and treated in 243 of 427 patients; their mean age was 17.9 ± 3.3 years, and approximately half (47.7%) of patients were female. There were 144 (59.3%) medial tears treated and 164 (67.5%) lateral tears treated; 65 (26.7%) patients had both medial and lateral tears treated. Median time from ACL injury to ACLR was 2.4 months (interquartile range, 1.4-4.7 months). Adjusted univariate analysis showed a statistically significant correlation between medial meniscal repair and time to surgery, with a 7% decreased incidence of medial meniscal repair per month elapsed between injury and surgery (odds ratio, 0.93 per month; 95% CI, 0.89-0.98; P =.006). No similar relationship was found between lateral meniscal repair and time to surgery (odds ratio, 1.02; 95% CI, 0.99-1.06; P =.24). Conclusion: In the setting of concomitant ACL and meniscal injuries, surgical delay decreased the incidence of medial meniscal repair in young athletes by 7% per month from time of injury. [ABSTRACT FROM AUTHOR]

Introduction: Assessing readiness of return to sport after procedures such as anterior cruciate ligament (ACL) reconstruction is a complex process, complicated by the pressures that athletes face in returning to sport as quickly as possible. Advances in motion analysis have been able to demonstrate movements that are risk factors for initial ACL injury and subsequent reinjury after reconstruction. An inexpensive, objective measure is needed to determine when athletes are ready to return to sport after ACL reconstruction. Purpose: The aim of this study was to compare the use of a single camera, markerless motion capture technology to 3D motion capture during lower extremity movements that pose as risk factors for ACL injury. Study Design: Cross Sectional Study Methods: This study assessed the validity of the Microsoft Kinect™ against an established 3-dimensional motion analysis system in 20 healthy subjects. Knee kinematics were assessed during impact activity in the coronal and sagittal plane specifically evaluating peak knee valgus and peak knee flexion during single leg hop and jump from box exercises. Intraclass correlation coefficients and 95% limits of agreement (LoA) were determined for each kinematic variable. Results: For the single leg hop, the mean absolute difference in the sagittal plane was 10.4° (95% LoA [-11.7°, 26.8°]), and in the frontal plane was 5.31° (95% LoA [-8°, 13.9°]). Similarly, for the jump from box landing on one leg, there was a difference of 7.96° (95% LoA [-17.7°, 21.3°]) and 4.69° (95% LoA [-6.3°, 12.6°]) respectively. For the jump from box, two-foot land, turn and pivot, the mean absolute difference between the systems was 7.39° (95% LoA [-17.8°, 19.7°]) in the sagittal and 4.22° (95% LoA [-5.9°, 11.6°]) in the frontal plane respectively. Intraclass correlation coefficients for each activity ranged from 0.553 to 0.759. Conclusion: The results from the Microsoft Kinect™ were found to be in poor agreement with those from a standard motion capture system. Measuring complex lower extremity movements with the Microsoft Kinect™ does not provide adequate enough information to use as an assessment tool for injury risk and return to sport timing. Level of Evidence: Level III [ABSTRACT FROM AUTHOR]

The article focuses on update in the field of sports medicine from August 2016 through October 2017. Topics discussed include Anterior Cruciate Ligament (ACL) reconstruction remains the standard treatment for active individuals after ACL disruption, presence of a symptomatic meniscal tear for arthroscopic knee surgical procedures and hip arthroscopy continues to be an expanding area of sports medicine and clinical outcomes. It also mentions sports-related concussions for public interest.