A year ago i tore my meniscus running. did pt 4 mo later once/wk for 3 mo been fine, but after a race yesterday knee feels weak. get attn now? wait?

See your surgeon: Should see your ortho-surgeon, may need another MRI of your knee.Things may have changed with the healing of your meniscus.

Depends: Depending how bad the symptoms are, i'd consider just rice for a few days and if it's not getting significantly better getting your doc to check it out. Probably you just need to rest it a little while then get back into your pt program for a tuneup.