Hi there, I think the reason to wait till 6 months is that all swelling must be done. I’ve seen arthrolysis mentioned at 3-6 months. My knee still swells something awful with walking. I had a mua at 6 weeks. Doc said he ordered a muscle relaxant befor3 the mua and my leg was stick straight to begin it. He showed me photos of my leg bent to full flexion. The swelling, I guess, and new scar tissue grew over the weekend. I feel this wire like sensation all across my knee, and the sensation varies with different activity. It gets worse, but never goes away. Thanks for asking.