Concentrated Bone Marrow Aspirate in Revision ACL Reconstruction

Inclusion Criteria: * Males and Females * Age 18 to 55 * Previous unilateral ACLR (Anterior Cruciate Ligament Reconstruction) within the last 5 years, and identified as having experienced failure of the primary ACLR * Scheduled to have a revision ACLR surgery, with any graft type (including patellar tendon, hamstring, quad or allograft) * Able to complete all study procedures and participate in a standardized physical therapy program Exclusion Criteria: * History of inflammatory arthritis or joint sepsis * Prior or concurrent total or sub-total meniscectomy * Prior or present avascular necrosis of the index knee * Oral or intra-articular corticosteroid injection within 3 months * Hyaluronic acid or PRP (Platelet-Rich Plasma) injection within 6 months * Use of duloxetine, doxycycline, indomethacin, glucosamine and/or chondroitin (ongoing or within 2 months) * Any clinical or laboratory abnormality greater than grade 3 CTCAE, which in the view of the investigator, will compromise the participant's safety. * Planned arthroplasty in the index knee