"Using" might not be the most accurate term, as I haven't actually put it on in at least a month. But it's this one.
https://www.shop-orthopedics.com/Ossur_Innovator_DLX_Post_Op_Knee_Brace_p/42310x.htm?1=1&CartID=0 Problem is, the pad on the inside hinge rubs the inside of my knee, but the pad on the outside is over an inch from my knee. And I was never able to adjust the straps to a point where the brace itself didn't creep down once my quad starts firing. As a maddening aside, I just got my final bill from the surgeon. This stupid thing that retails for $120, cost $1,800 from the surgeon's office, and my copay was like $350. I do believe I'll call and negotiate that BS.