Aim: presentation of principles, techniques and results of arthroscopic subscapularis tendon repairs. Patients and methods: In the period from 1st January 2015 until 1st January 2019 we performed 289 rotator cuff repair surgeries. The subscapularis tendon lesions were found, and sorted according to Lafosse classification and operated arthroscopically or arthroscopically assisted. After a minimum of 6 months after surgery we assessed and analysed the results of all arthroscopic treatments of 31 available patients with a subscapularis tendon lesion. The patients were examined for preoperative and postoperative capabilities and difficulties according to the Oxford shoulder score and Subjective shoulder value questionnaires. Results: In 89 cases (30.79%) we found subscapularis tendon tears from which 8 isolated (2.76% of all cuff tears) and 81 combined with other rotator cuff tears. In 72 cases (80.9%) we performed all arthroscopic repair and in 17 cases (19.1%) an open surgery with or without arthroscopic assistance. From all arthroscopic groups of patients, 31 of them were evaluated 17.96 ± 8.25 months postoperatively with patient-based Oxford shoulder score and Subjective shoulder value (response rate 43.05%). Oxford shoulder score improved significantly from 14.19 preoperatively to 36.74 postoperatively (p=0.002). Subjective shoulder value also increased significantly from 27.32 to 82.33 (p<<0.001). Conclusion: Arthroscopic repair of a subscapularis tendon tear, isolated or combined with other rotator cuff tears, represents a safe and effective a surgical method with an excellent outcome.