I come here to hear your opinion about my situation that has been building up for the last 5 years or so. I've been diagnosed with patellar syndrome back in 2007 in the consequence of a knee trauma, something that I've been dealing with since then, and this past year, under doctor advise, I was forbidden to do squats and heavy leg extensions, as well as running, as those exercises tend to cause me cartilage inflamation. This last year too, I've done a shoulder surgery due to a dislocated shoulder that I had since 2010 while doing seated military press, result: 2 screws on my shoulder to prevent further damage and to anchor my umerus to my rotator cuff - this do help but cause a slight pain when I lift heavy after some 8-10 reps. Also to add this soap-like story, acording to my physiotherapist I should do some kind of weightlifting to gain some muscle mass on my quads and back/shoulders to strengthen those areas, but I also shouldn't try to get too heavy even if it's lean mass because my knee structure could be affected in the long term due to have to withstand a higher degree of joint stress than a lighter weight person.
So my question here is: in your opinion wich road should I take in terms of goals? I do like the whole bodybuilding like training to gain as much mass as possible, but since I can't bear much weight I belive aiming to such goals would be a bad option in health wise terms. Also I like doing strength training (Rippetoe's kind of workout)...so all cards are on the table now and I'd like to hear what you all have to say