Why won't this cut on my knee heal?

Question

I scraped my knee a couple months ago and the area where the scrape occurred is now pink, tender, and just today I banged it very slightly and the wound reopened. What's the reason why this cut won't heal fully or at least scab.

Answer 1

it might be infected or you are picking the scab

Answer 2

maybe  u have it too open to bacteria u should try putting bandages on also peroxide. if it gets worse i visit a doctor best thing to do =)