People vary in how elastic their tendons are. One stretch does NOT work
for everyone.

You may feel some discomfort stretching...sharp pain, you should NOT.

I have a severe tendon injury that is STILL healing...it is taking a LONG time.

There are support nutrients for tendons/ligaments.
SAMe is good.
Some silica in the diet (like bananas, green beans)

I found Biofreeze very useful after PT sessions. I had my injury in the groin, but they really hurt my KNEES with their exercises. So I used the Biofreeze gel
liberally and that helped alot.

I would do stretches very conservatively. Some studies I have seen, show
older patients do not do well on stretching..others do.
http://www.seniorjournal.com/NEWS/Fi...tchingHelp.htm

http://www.ncbi.nlm.nih.gov/entrez/q...&dopt=Abstract

I think moderate motion/use is important. If you feel pain, pain strong enough after to use Vicodin...then this may be a warning sign, not an improvement.
Starting slowly, moderately, may enable you to progress to other levels eventually.