[en] Background: ACL tear is an injury that occurs relatively frequently in sport. Its incidence depends on a wide variety of factors. It is known that the risk of suffering this injury increases considerably if it has been suffered previously. The efficacy of measures aimed at reducing the incidence of the injury recurrence is not clearly known. Objective: Know what preventive measures are adopted to prevent athletes that have undergone ACL ligamentoplasty suffer an injury recurrence and analyse their effectiveness. Methods: A systematic bibliographic review is carried out. The search is made in the Cochrane, PubMed, Scopus, CINAHL, SPORTDiscus and PEDro databases, between the months of March and September 2021. Only articles published in the last 5 years in English, Spanish and Portuguese are included. Outcomes: After conducting the search, 33 articles were selected for review. A total of 6056 participants aged between 10 and 60 are included in the review. The most widely used type of surgical technique was the use of a hamstring tendon autograft. The incidence of injury recurrence was 12,5%. Preventive measures include the preoperative beginning of rehabilitation, knee brace use, implementation of educative sessions, cross-education, eccentric cycling, neuromuscular training with external focus of attention, jump training, hip focused exercises, and specific programs before the return to sport, pass the RTS criteria and delay the return to sport until 9 months. The level of evidence for the results obtained was high. Conclusions: The preventive measures that showed the greatest efficacy were the preoperative beginning of the rehabilitation, including exercises focused on the hip and educational sessions during it, carrying out specific prevention programs before returning to sport, and delaying the RTS until 9 months. The effectiveness of these measures is considered to be good, and their implementation is recommended.

[gl] Introdución: A rotura do LCA é unha lesión que se produce de forma relativamente frecuente no deporte. A súa incidencia depende dunha gran variedade de factores. Sábese que o risco de sufrir esta lesión aumenta de forma considerable se xa se padeceu previamente. Non se coñece de forma clara a eficacia das medidas destinadas a reducir a incidencia da recidiva lesional. Obxectivo: Coñecer cales son as medidas preventivas adoptadas para evitar que os deportistas que se someteron a unha ligamentoplastia do LCA sufran unha recidiva lesional e analizar a súa eficacia. Material e método: Realízase unha revisión bibliográfica sistematizada. A busca realízase nas bases de datos Cochrane, PubMed, Scopus, CINAHL, SPORTDiscus e PEDro entre os meses de marzo e setembro de 2021. Inclúense unicamente artigos publicados nos últimos 5 anos en lingua inglesa, española e portuguesa. Resultados: Tras realizar a busca selecciónanse 33 artigos para a súa revisión. Inclúense na revisión un total de 6056 suxeitos cunha idade comprendida entre os 10 e os 60 anos. O tipo de técnica cirúrxica máis empregada foi o uso dun autoinxerto do tendón dos isquiotibiais. A incidencia da recidiva lesional foi do 12,5%. Entre as medidas preventivas atópanse o inicio preoperatorio da rehabilitación, o uso de xeonlleira, a implementación de sesións educativas, programas de educación cruzada, de pedaleo excéntrico, de adestramento neuromuscular con foco de atención externo, de adestramento de salto, de exercicios enfocados na cadeira e programas específicos antes do regreso ao deporte, superar os criterios RTS e retrasar o regreso á actividade deportiva ata os 9 meses. O nivel de evidencia dos resultados obtidos foi alto. Conclusións: As medidas preventivas que mostraron maior eficacia foron o inicio preoperatorio da rehabilitación, incluír exercicios enfocados na cadeira e sesións educativas durante esta, realizar programas específicos de prevención antes de volver ao deporte e retrasar o RTS ata os 9 meses. Considérase que a eficacia destas medidas e boa e a súa implementación é recomendable.