Sure. The main thing is rest and treating the pain first. The dosage of ibuprofen is 400 to 600mg 2 to 3 times a day. The meniscus is a possibility since it wears down over time. But first give it a couple of weeks of rest and pain treatment to see how he behaves so as not to be invasive. If it doesn't improve, the steps to follow are as I told you. This is told to you by a person who tore his cruciate ligaments playing football as young 😂🦴🩻