Did you get the newsletter from Dorwest recently? I see they recommend the hoemeopathic remedy Symphytum 15C for a minor tendon injury. I quote "It is prepared from Comfrey, which is renowned for its use on sprain and strain type injuries. One pillule 3 times a day for 10 days"
Info
here - including, as someone else has mentioned, reference to knitbone (Comfrey)
I haven't tried it but I'd be willing to give it a go in your circumstances although I'd probably still want a pain relief if it were necessary.