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Background: Knowledge of patient characteristics, surgical fixation, graft choice, outcomes, and concurrent injuries of revision anterior cruciate ligament reconstruction (ACLR) is limited. Purpose: To describe the current cohort of revision ACLR captured by a community registry and the outcomes observed in the registered patients. Study Design: Case series; Level of evidence, 4. Methods: Patients who underwent revision ACLR registered between February 2005 and June 2014, by 200 surgeons in 46 hospitals, were evaluated. The Kaiser Permanente ACLR Registry (KPACLRR) collected data intraoperatively and postoperatively using paper forms, electronic medical records, administrative claims data, and patient-reported outcomes. The KPACLRR cohort was longitudinally followed, and outcomes were prospectively ascertained. Outcomes (ie, revisions, subsequent operative procedures, deep surgical site infections, and deep venous thrombosis) were adjudicated via a chart review. Descriptive statistics were employed. Results: Of 2019 patients who underwent revision ACLR, at a median follow-up of 2.2 years (interquartile range, 1.0-3.8 years), 212 (10.5%) required subsequent operative procedures, and 86 (4.3%) were revised a second time. At the time of revision, 55.1% of the patients had at least 1 concurrent meniscal injury, and 26% of those were repairable. Cartilage injuries were present in 42.0% of patients. Deep surgical site infections occurred in 12 patients (0.6%), deep venous thrombosis occurred in 5 patients (0.3%), and 1 patient (0.1%) had a pulmonary embolism. Conclusion: Revision ACLR can be performed with a low short-term revision rate and relatively few complications. At the time of revision, nearly half of these patients had an irreparable meniscal injury, and slightly less than half had a cartilage injury. A large community-based ACLR registry is useful in informing surgeons of current treatment practices, prevalence of concurrent injuries, and outcomes associated with the procedures, especially infrequent procedures such as revision ACLR. [ABSTRACT FROM AUTHOR]

Background: Orthopaedic registries have shown value in tracking and surveillance of patients, implants, and outcomes associatedwith procedures. No current anterior cruciate ligament reconstruction registry (ACLRR) exists in the United States.Purpose: To describe the current cohort captured by an institutional ACLRR and describe the outcomes observed in the registeredpatients and how findings from the ACLRR are disseminated.Study Design: Cohort study; Level of evidence, 2.Methods: The anterior cruciate ligament reconstructions (ACLRs) registered between February 2005 and September 2011 by 244surgeons in 48 medical centers were evaluated. The ACLRR collected data intra- and postoperatively using paper forms and electronicmedical records. The ACLRR cohort was longitudinally followed and outcomes were prospectively ascertained. Outcomes(ie, revisions, subsequent operations, venous thromboembolism, and surgical site infections) were adjudicated via chart review.Descriptive statistics are used to describe the cohort and Kaplan-Meier curves to evaluate survival.Results: During the study period, 16,192 ACLRs (15,101 primary and 1091 revisions) with a median follow-up of 1.6 years (interquartilerange, 0.7-2.8 years) were registered. Male patients received 64% of both primary and revision ACLRs. The mean age atsurgery was 29.5 years (SD, 11.4 years) for primary and revision reconstructions. Cartilage injuries were noted in 25.2% of primaryand 37.5% of revision ACLRs, and meniscal injuries were identified in 60.8% and 53.2%, respectively. Autografts were used in57.6% of primary ACLRs and 20.9% of revisions. Allografts were used in 42.4% of primaries and 78.8% of revisions. In primaryACLR, the most common femoral and tibial fixation types were interference screws (42.2% and 79.7%, respectively). Fixationtype distribution was nearly identical in primaries and revisions. Of the primary ACLRs, 3.7% had subsequent operations onthe same knee and 1.7% on the contralateral knee. Deep surgical site infection developed in 0.3% of primaries and 0.8% ofrevisions. Symptomatic deep vein thromboses were seen in 0.2% of both primaries and revisions. The overall revision ratewas 1.7%. Lower rates of graft survival were identified in younger patients and those with allografts.Conclusion: Large, community-based ACLRRs are useful in informing participating surgeons of current treatment practices,prevalence of concurrent injuries, and outcomes associated with the procedures. Information from the ACLRR can be used todevelop interactive patient and surgeon tools that can be used to optimize patient care. [ABSTRACT FROM AUTHOR]