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In page Anterior cruciate ligament reconstruction:

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A new approach to treating ACL tears was developed at Boston Children's Hospital and is currently in clinical trials.[1] The Bridge Enhanced ACL Repair (BEAR) implant is a bio-engineered bridging scaffold that is injected with a small amount of patient's own blood to stimulate healing and reconnection of the ACL. Results from the first-in-human study published in March 2019 in the Orthopedic Journal of Sports Medicine showed the 10 patients who received the BEAR implant had similar clinical, functional and patient-reported outcomes as the 10 patients undergoing autograft ACL reconstruction.[2] Additional clinical studies are underway.[3]