I'm not an expert but would think if the leg length differential is different after surgery than before (whether now same length or not), there would be a bit of pain as your muscles adjust. The muscle on one side were probably a tad shorter than the other and you're stretching them now. That might also be what is causing the limp - and its probably more noticeable when you've been walking a fair bit - like going through a warehouse of furniture (Nebraska Furniture Mart?). Try your best not to limp (walk more "mindfully" ) but realize it's going to happen soon. And don't try to ditch the cane until you get rid of the limp (and use it when you get tired from walking without it. It's all probably just a matter of a bit more time. If it persists, evaluating it and providing stretches to help eliminate the limp is one thing a good PT should be able to help with. Mentioning seeing Gary Pucket on NanaMama's thread today reminded me of the Starlight Theater - is that still there?