Joint pain is often caused by consumption of nightshades. Are you eating more tomatoes and peppers lately?
I cured my joint issues when I removed nightshades from my diet.
Nightshades are also likely to be the cause of osteoarthritis
The "Seven Deadly Sins"
Grains (wheat/rice/oats etc) . . . . . Dairy (milk/yogurt/butter/cheese etc) . . . . . Nightshades (peppers/tomato/eggplant etc)
Tubers (potato/arrowroot etc) . . . Modernly palatable (cashews/olives etc) . . . Refined foods (salt/sugars etc )
Legumes (soy/beans/peas etc)