He's a woodworker and got his hand pulled into a machine that stumped his pointer finger and destroyed the tendons in the middle and ring finger.

Things could be worse for him and all and this may be a crapshoot but does anyone have any resources that cover something specific like this? He called me up and was asking me what he can do to speed up the healing process and get as much functionality in his hand back as he can. I recommended bone broth, omega 3, etc. and other primally things. Are there any other supplements you guys could recommend, articles, research? I have a few but nothing specific on the subject.

I want to help as much as I can, anything is appreciated, thank you guys.