Did you doctor test you for those? How does he/she test for this? They are apparently a very specific clinical finding for a worse course of systemic scleroderma. A tendon friction rub is a grinding/crunching feeling - both can be heard and felt - in joints when they are moved in a certain way. I get lots of little joint pops as I move around normally during the day - feel like I have always had those.
For my background - I am 45 female, recently went to a rheum just for a baseline work up since thyroid disease runs in my family. Have some very minor fleeting aches and pains I mentioned to him. He looked me over, said I look fine - and then boom, my bloods came back with a positive SCL-70. He and I were both shocked - we were not even looking for this. I have no sclero symptoms - no Raynauds, no skin issues, no swelling, etc...
As I have been reading all about the disease, I saw a few articles on tendon friction rubs being a clinical sign.


i have heard them in the large knuckles at the base of my fingers - a creaking sound when i moved my fingers. it went away - never was painful - just creepy.