Shoulder pain caused by long term knee damage?
Do you know of any cases - or can you point me to a research site - that show that shoulder damage can be caused by 10 years of damaged knees?
I have been in the physical therapy realm for 20 years and cannot say that I have seen a clear case of knee issues causing shoulder damage. Of course if you had a tendency of moving/lifting in a way that stressed your shoulder because you were protecting your knees, over time it could contribute to shoulder damage. I have not seen any research case studies indicating such. In general there are so many different variables that can affect joint stress that it would be difficult to find a definite cause - effect relationship between a knee issue and a shoulder issue.
As for research, the best site for high quality research is www.pubmed.org. It is the national institute of health website for high quality, peer reviewed research. I would recommend talking a look there if you are looking for a variety of studies.
Hope this helps.
JTrempe PT, ATC