SymposiumBlood Flow Restriction Training in Rehabilitation Following Anterior Cruciate Ligament Reconstructive Surgery: A ReviewHughes, Luke MSc*; Rosenblatt, Ben PhD†; Paton, Bruce PhD‡; Patterson, Stephen David PhD* Author Information *School of Sport, Health and Applied Science, St Mary’s University ‡Institute of Sport, Exercise and Health, London †The Football Association, St. George’s Park, Burton-Upon-Trent, UK The authors declare that they have nothing to disclose. For reprint requests, or additional information and guidance on the techniques described in the article, please contact Luke Hughes, MSc, at [email protected] or by mail at School of Sport, Health and Applied Science, St. Mary’s University, Waldegrave Road, Twickenham, London, UK TW1 4SX. You may inquire whether the author(s) will agree to phone conferences and/or visits regarding these techniques. Techniques in Orthopaedics: June 2018 - Volume 33 - Issue 2 - p 106-113 doi: 10.1097/BTO.0000000000000265 Buy Metrics Abstract Anterior cruciate ligament (ACL) rupture is a highly prevalent orthopedic injury, resulting in substantial skeletal muscle atrophy because of changes in muscle protein balance and satellite cell abundance. Neural activation problems also contribute to strength loss, impacting upon a patients’ physical function and rehabilitative capacity. Heavy loads typically required for muscle hypertrophy and strength adaptations are contraindicated because of graft strain and concomitant cartilage, meniscal, and bone pathologies associated with ACL reconstruction. Strength of the quadriceps is a fundamental component for the ability to reduce shearing and torsional strains on the ACL with ground contact, and forms a critical component of ACL rehabilitation. Given the dangers of early postoperative heavy-loading, low-load blood flow restriction (BFR) training may provide an alternative rehabilitation tool for practitioners. Passive BFR can attenuate early muscle atrophy and strength loss, and may be more effective with the addition of novel, complementary therapies such as neuromuscular electrical stimulation. Upon ambulation, aerobic, and resistance exercise with BFR can stimulate muscle hypertrophy and strength adaptations and resolve activation problems. This may occur through increasing muscle protein synthesis and satellite cell proliferation, decreasing muscle protein breakdown and improving muscle activation by altered recruitment patterns. Thus, BFR training may provide an effective rehabilitation tool that does not place heavy loads and force through the tibiofemoral joint. This may reduce the risk of damaging the graft, cartilage, meniscus, or other intra-articular structures, providing thorough screening before use is followed by correct, evidence-informed application. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.