Hi, Couple days back while playing badminton my knee got injured. As my ligament injury (intrasubstance tears involving ACL ). Please suggest me whether I have to under go surgery or not. Points in my report -Intrasubstance tear involving anterior cruciate ligament. - Complete tear involving body of lateral meniscus. Horizontal tear involving posterior horn of lateral meniscus. -Laxity involving lateral collateral ligament with non clear appearance in lower segment possibly representing tear of the ligament.