After searching about my symptoms, I would say this is it. They call it comminution (grinding due to trauma or excessive direct pressure to the top of patella). Does anybody know how to heal this damage to the cap's bone?
Affected area is about a size of a coin, burning each time when it is pressed or skin is pulled (dragged to one side) on top of it.
Any advice, please, and thanks,
Regards,
Wojt