Knee Pain - Arthritis - Causes - Symptoms - Diagnosis - TreatmentKnee pain caused by arthritis can be associated with joint pain, stiffness, decreased mobility, and decreased joint function, making activities of daily living difficult.arthritis knee pain - Arthritis Treatment and Relief Resource CenterSimple causes of knee pain often clear up on their own with simple self care. Excess weight can put you at greater risk for knee problems. Knee pain can be caused by:Arthritis of the Knee - OrthoInfo - AAOSPost-traumatic Arthritis. Post-traumatic arthritis can develop after an injury to the knee. This type of arthritis is similar to osteoarthritis and may develop years after ...