Shoes with Air Max heels like the Court Ballistecs do a great job of warding off impact, and are much thicker in the sole than other Nikes.
But why switch from Asics? If you want to stick with the brand, the GR4s look great.
Whatever shoe you get, I'f get a top of the line insole. No point taking chances after a knee op like that.
Yonex E-Zone Xi100 - Tournagrip XL - Adidas Barricades - Nike Tennis Socks