Playing guitar and when I go to change chord my finger(pinkie) couldn't bend it was straight and wouldn't bend it ended up bending but then it did ithe same hint again
Not all peoples fingers work the same way. A friend of mine is a classical guitarist. It was difficult for him because his thumb would not bend. He worked around that and was teaching for years. My fingers will lock after playing that is how I found out that I have arthritis.
This tool is out there too....google images.....guitar finger strengthening exercise tool