Sarah, you and I both had traction for our ops, no large scar or cutting off of bones etc, our post op pain was almost all internal soft tissue damage. How did it feel in the first week or so compared to what your husband is feeling? I certainly couldn't walk without yelping at times in the first few weeks, and definitely not without crutches. I was told it was the internal bruising and bleeding. Does he have crutches? Sounds to me like he'd benefit from keeping some weight off the leg for now, or at least reducing the amount of weight through the hip/leg. And lots of ice, often.
I also had a serious fall when I used to ice skate as a teenager, I didn't break anything, but I was swollen and bruised from almost waist to knee on one side and it was agony for a while. I can't remember how long for, but I had to stay off school for a bit until I could walk better.
I hope it does improve for him soon, but if it's still really bad, maybe a trip back to A&E is in order?
Dear me, you two are having a bad time of it aren't you.