This is the type of arthritis which is the result of thinning of the joint cartilage.
Although it is typically thought of as being the result of 'wear and tear' - like for people who did a lot of sports: the current science shows we should think of it as wear and repair. This basically means 'use it or lose it'. Although, somewhat obviously, there's a sweet spot to be reached.
No all arthritis is painful and in answer to the question "do I need surgery for arthritis" - the answer is a resounding 'no' (plus a "not necessarily...)
Often known as 'wear and tear' arthritis. Often causes stiffness in the joints and it can sometimes be painful too.