The basis of this paper has been planned on the functions of the meniscus and its effects. i.e. the existence of meniscus will prevent arthritis; in other word torn-off (wholly meniscus and/or partly) will lead to suffering from arthritis. In view of the above, it is reasonable that attempt will be made to amend the torn meniscus instead of the surgical removal (meniscectom). The amendment may be done by the surgical operation and/or arthroscopy. (It is more advisable to use the arthroscope, because the least troubles may occur). In the meantime, meniscus transplantation from one individual to another, or meniscus prosthesis may be used. In the year 1371 (from Khordad to Bahman) 20 people - 18 males & 2 females - who were suffering from torn meniscus (diagnosed through arthrography and arthroscopy) were amended. In this connection, we should inform that 18 patients had peripheral torn meniscus who were amended, and the 2 remainders had central torn meniscus which torn parts were removed. After six months the patients were examined again, and no clinical marks - torn-off locations - could be observed i.e. fibrous tissues had completely filled us the torn places. Therefore, it is emphatically insisted that amendments should be performed on torn meniscus, especially when tearing is in peripheral parts of the meniscus