Just in case you don't remember this from your med school lectures (I don't remember seeing you there that day), I'll provide scientific evidence that you can't argue.
1.
Return to Activity After Knee Arthroscopy 10.1016/j.arthro.2007.07.026 : Arthroscopy: The Journal of Arthroscopic & Related Surgery | ScienceDirect.com
"By 2 weeks postoperatively, only 74% described knee-related activity restriction, a significant difference (P = .039); this improved to 38% at 4 weeks and was only 4% at 20 weeks. In addition, 82% returned to light activity such as walking, housework, or yard work after 1 week, with 94% after 2 weeks and 100% after 4 weeks."
That means that 75% of patients were restricted in activity 2 weeks out, and this activity is no doubt not nearly as strenuous as playing division 1 basketball.
2. The Cleveland clinic says return to office work a week out and active lifestyle somewhere between 1 and 2 months.
Knee Arthroscopy
Most people don't even get a post-op visit to evaluate their return to more strenuous activity until 2 weeks after the procedure.