I’m sorry to hear about your ongoing woes. Not nice. And again I’m sorry – this isn’t going to help but I think I’ve been very lucky in that I’ve been able to heal naturally very quickly.
I snapped mine after a taxi pulled out on me as I was overtaking at 15mph in October last year. I took 2 days off, and was back at work the following Monday. I was out of the sling by then. I managed to stay off the tablets which helps apparently. They made no difference when the real pain of bone/muscle hits anyway. The very worst part was the torn muscles all around the area. Getting into and out of bed was really very difficult for 2 weeks. After a week though I was fairly confident that things were going well. I was back on a bike after 19 days. Commuting after 4 weeks. Took it relatively easy on the mtb until about 7 weeks after the accident.
I used those stretchy bands for a bit but realised that the strength was coming back off it’s own accord, and that I had no mobility issues. I also realised that it’s rather difficult to find the discipline to do the full suite of recommended exercises for the duration and frequencies they specify.
It took about 3 months for the pain to go away completely and I’ve not suffered any major lasting issues. The joint crunches a bit but I suspect it’s just ligaments slipping over each other as it rotates.