Background: - Self-efficacy is an individual’s confidence on their ability to perform a specific task and key internal motivational process that can be affected by personal and environmental variables and it influences motivational outcomes of choices efforts and goals.  Purpose: - To find out the subject’s self- efficacy at grade 2(2 and 3 months) and grade 3(2 and 3 months) of ACL injury and find out correlation the K-SES with the subjective scales (physical activity, age and return to sports).  Materials and Methods: - 25 subjects (16-35) of each grade 2 and grade 3 of ACL injury (2 and 3 months) confirmed by MRI will filled questionnaires form at 2 and 3 months from ACL injury. Subjects completed six scales i.e., Marx scale, KOOS scale, K-SES scale, Lysholm scale, Tegner scale and ACL-RSI scale. Analyzed using IBM SPSS 19. T-test was used. P-value <0.05 was considered significant.  Results: - Grade 2 and 3 of 2 and 3 months shows not significant, shows only differences because of psychosocial and psychological factors, correlation seen self-efficacy on physical activity, return to sports and age of grade 2 and 3 it not shows significant because of coping strategies and quality of life, less time duration.  Conclusions: - Self- efficacy, physical activity participation and return to sport for an ACL injury in Indian male athletes does not show significance because of internal and external risk factors as observed in this study for Indian male athletes. The differences show self-efficacy in grade 2(2 and 3 months) and grade 3(2 and 3 months) of ACL injury because of psychosocial, psychological factors and environmental factors.