Ive Had 2 Surgeries On My Knee. Acl Reconstruction Along

Ive had 2 surgeries on my knee. Acl reconstruction along with a sentiment on medial and lateral meniscus both surgeries. I've recently went to the ER for the pain and other symptoms. They took xray and said there what looked like a loose body and possible other issues (unknown yet). What is the likelihood of qualifying for a knee replacement? (I'm 26)