Hyperbaric oxygen treatment (to aid in healing injuries, even pain.)

Wow, great to hear that it helped your hubby a bit, @Cath62 ..... I look forward to hearing about the discussion your support group will have later on!   

I have a friend who's had major neck cancer surgery twice last year & his saliva glands have been badly impacted.  Sadly, he had to have some of his jaw removed before Xmas too ... but was home by Xmas, recuperating - so have sent info to him too, about possibly asking about it. xx  It would be worth a try, if it may assist with his healing.