How should i treat a grade 2 intrameniscal tear within the posterior horn of the medial meniscus?

Quad strengthening: Most grade 2 intrameniscal tears do not cause significant pain. There is more of a likelyhood that you have hamstring and pes tendinitis (which sits in the same region as the meniscus). It is likely you are limping and favoring the knee (hyperextending), causing more pain in the hamstrings. With quad exercises, most of those symptoms will resolve. No need for knee arthroscopy.

Meniscal signal: One should always treat the patient not the radiograph. A grade ii intrameniscal tear is most probably not detectable on knee arthroscopy and so would be left alone surgically. Perform strengthening, proprioceptive and flexibility work with a physical therapist.