Introduction: One of the most frequent knee injuries and one that is on the increase, especially in sports, is the anterior cruciate ligament injury. Surgical reconstruction is essential to recover the biomechanics of the knee, provide correct stability and pain-free function, as well as toavoid early degenerative changes. The objective of the present study was to assess the functional recovery of patients undergoing reconstruction of the anterior cruciate ligament by means of ligamentoplasty with semitendinosus- internal rectus tendon and Toggelock system. Material and methods: A retrospective descriptive observational study was designed, which included 29 patients who underwent a ligamentoplasty with internal semitendinosus-rectum and Togglelock system in our Center, during the years 2017-2018. Variables obtained from the clinical history and the Lysholm scale were studied to assess the patients. Results: In total, a sample of 29 patients was obtained, 26 men and 3 women with a mean age of 31.13 years (range 19-53). The most frequently injured knee was the right knee in 17 patients out of 29, with 65% presenting associated injuries. One patient had suffered a tibial fracture operated with an intramedullary nail that altered the final results. The postsurgical score on the Lysholm subjective assessment scale was 86. The mobility of the operated knee showed a minimal reduction in flexion of 6º compared to the non-operated knee that was statistically significant. Conclusion: The results obtained after ACL reconstruction with this technique, using the semitendinosus- internal rectum plasty and the Togglelock system were good-excellent, with a high degree of patient satisfaction, few complications, and notable functional results.