In reply to jonnie3430:
Don't know that specific injury. I chipped the bone off that part of my elbow then had it wired back together but no particular problems other than the elbow now a different shape to the other one.
As for exercises something that strengthens the muscles will also strengthen the tendons. For triceps dips are brilliant if you can fit some bars up somewhere. If not then push ups are good. Both exercises will be more on the triceps and less on the chest if your arms are closer together - though for dips you're obviously limited by the bars you use.
It's usually suggested that building tendon strength requires very heavy weights to best stimulate growth: ie. sets where you fail after only a few reps or sets of negative only repetitions (lowering the weight).
However that probably not be advisable for injury rehab and lighter sets will probably be better. I think that by moving the tendon through it's sheath the idea is the scar tissue gradually breaks down - so long as you don't make it worse.