I impacted my knee and feel sharp pain but only when I press the kneecap, I can walk and run just fine. What could this be and what should I do?
Sounds like a meniscus issue. I have a cracked meniscus in both knees (my right is worse than the left). I can climb mountains, run steep trails, weight train, sprint and complete basically any plyometric jumping exercise. Yet, there are times I find it difficult to climb simple stairs. The meniscus is cracked so part of it gets stuck under the knee cap. If I do a standing pigeon stretch it usually cracks back into place.
Does your knee make a cracking sound? It is not supposed to, not really. You can go to an orthipedic surgeon and they can diagnose you in five seconds. I wouldn't get scoped or have them shave the cracked part away (doing so more often than not reduces your quality of life). You just need to find ways to work around your situation.