Here is good thread.
http://anabolicminds.com/forum/male-anti-aging/53121-hgh-torn-tendon.html
Cissus is very good idea. It is about 40% increase in healing speed.
IGF-1R3 is king of tendon healers at about 300%.
HGH and HGH boosters are not recommended at your age since it can lead too fast of growth in bones.
Good news is at your age your HGH and IGF-1 levels are already very high levels. Good luck