I haven't seen the idea of "trekking poles" discussed much here, but, I have a pair and am intent on using them to normalize my gait post-surgery. In fact, I use them now because my gait is so compromised and they allow me to get out and walk for 30 minutes without so much pain and general discomfort.
Trekking poles are like cross-country skiing poles, though you can get a rubber tip for them, they are completely adjustable, and they have a kind of "anti-shock" mechanism that acts like a shock absorber should you be on pavement or solid ground.
The advantage with trekking poles is that you activate your upper body (increased workout) and by using two poles you are able to walk normally and upright between them. It's more of a workout thing than it is for using around the house, where, likely, a cane or crutches would be more appropriate.
The trekking poles are optimal, IMHO, because you have hand grips and leather straps that lock your grip into place. You can totally adjust the pole height for the desired comfort zone. "Lekki" is one of the leading brand names in the business, and REI carries their line, but there are other manufacturers as well.
Really for under $200, considering the total cost of the surgery and recovery, this is a small price to pay for something that is going to minimize the time to get back to normal walking, and also the quality of the gait during the recovery process. For me, even right now, pre-surgery, this is a great improvement over a cane or trying to walk without assistance.