Does this sound like I tore my meniscus?

I tore my meniscus in 3 places along with a complete tear of my ACL about 4 years ago. They replaced the ACL with pieces of my hamstring, and for the meniscus they shaved off two torn pieces and sewed one back together.

I got the initial injury skateboarding. I was trying a trick down a gap, and when I landed on my feet I felt my knee collapse inward and then bounce back into place. It was one of the most painful things I had ever felt (until the surgery).

I took PT very seriously and healed very well (took about 7-8 months). Skateboarding makes me happier than anything I can think of, so I made sure I rehabbed my knee as best as I could.

Ever since then I have had no problems. I got back to skateboarding how I was before the injury. Up until a week ago...I was skating a similar gap, again kicked my board away, and landed on my feet completely normally. No knee collapsing, twisting motion or anything, but I felt a somewhat sharp pain inside my knee.

For the last week I have been taking it easy. I would really rather not have to have surgery again. I've been doing hamstring and quad strengthening, and icing regularly. The symptoms haven't seemed to subside.

SYMPTOMS:

Most prevalent going up and down stairs. When bending my knee, I feel the sharp pain at a very specific angle. This happens about 50% of the time when I walk up a stair.

Also any kind of excessive force on that knee brings the sharp pain. Walking is fine, but running is not.

Advice appreciated!