Meniscal injury is one of the most common knee injuries. It is known that loss of meniscus increases the risk of subsequent development of degenerative changes in the knee. The aim of the work was to evaluate the clinical and functional outcomes of arthroscopic treatment of meniscal tear using the All-inside technique. This prospective study was conducted on 18 patients treated with all-inside repair technique, the patient ages ranged from 18 to 40 years old (mean 26.50 years), with the majority being male (77.8%) and female (22.2%). Results: The mean operative time of all cases was 73.33 ± 26.67 (range 40-100 minutes). The mean operative time of isolated meniscal repair cases was41.42 ± 5.56 (range 40-45 minutes). The mean operative time of associated ACL reconstruction cases was93.63 ± 5.04 (range 90 – 100 minutes). Fifteen (83.3%) cases had moderate pre operative pain and three (16.7%) cases had severe pain. while post-operative, 11 cases (61.1%) had no pain, five cases (27.8%) had mild pain and one case had moderate pain, and one case had severe pain. test value is 29.250. there is highly statistically significant difference between pre-operative and post-operative pain. There was highly statistically significant difference between pre-operative and post-operative Lysholm score. According to post-operative Lysholm score, there were two poor cases (11.1%), three (16.7%) good cases & 13 (72.2%) excellent cases. Conclusion: Arthroscopic All-inside meniscal repair could be an effective, safe, rapid surgical management with reliable and predictable outcomes and avoid the risks of nerves and vessels injury.