A little odd question for group. Using walker so much, my wife seems to have a hip imbalance, or pelvic tilt. We notice that one hip is higher than the other - I think from her posture using the walker the last 3 mo.
The walker itself won't cause a postural imbalance, but it would be a good idea to ask your wife's PT to check this.
As your wife starts to walk more, having her hips level will be an important part of having a correct gait.
ROM is about 98, still constant over a month. She has not changed much this month, but she is using her walker a lot more and some leg strength has returned. She can stand on both legs, she can walk 75 feet with walker as two weeks ago she could not. She is doing about 300-400 steps a day now with walker. Her ankle and knee were swelling a lot, and hamstring super tight. I know we have to be patient, but still concerned about ROM since we just passed 4 mo PO on her leg break near the knee.
Swelling will still be restricting ROM. Icing and elevating will help to reduce swelling.
There's no deadline by which good ROM has to be achieved, since ROM can continue to improve for a year, or even longer , after surgery. The article below applies equally to a tibial plateau fracture.
Myth busting: the "window of opportunity" in TKR
This week has especially been tough, as we are building a new home, and at least 3 days we were out picking interiors, visiting cabinet shops, etc. where my wife stood for 30-45 min at a time at least 3 days this week. I hope to get her more into a normal routine next week. My question, could swelling be blocking 5-10 degrees of actual ROM movement? Should we stick to very light non resistant cycling and hamstring stretches, heel slides?
Yes, you bet that swelling can block ROM movement. I'm not at all surprised that your wife's flexion hadn't improved after a week like that.
When you visit shops, you can help your wife by asking for a chair so she can sit, instead of having to stand for so long.
If you're going to spend a lot of time looking at things for your new home, try to have a restful day between days when you're out a lot. On the rest day, help your wife to spend as much time as possible resting, icing and elevating, and only doing a few gentle exercises.
She is slowly regaining strength, and can stand close to 100% weight bearing, but there is a big psychological aspect, as fear of falling. Biggest difficulty is patience. She seemed to not improve on ROM the last month, but has improved in other areas - such as leg strength, gait.
As long as your wife has a fear of falling, she needs to be using the walker. It's too soon to be thinking about using sticks instead. She needs the walker until she is 100% weight-bearing, with confidence.
Forget the lack of increase in ROM this month - more ice and elevation and fewer long days out will help with that.
It's great that her le strength is improving and she's walking with more confidence. While ROM may not have improved, she's making progress in other areas.