Stiffness can result from inflammation, damage, or degenerative conditions like arthritis. Delicate stiffness could make it tricky to bend or straighten the knee, though severe stiffness can result in mobility troubles and pain when standing or sitting down. An MRI is an extremely Secure investigation and does not require radiation https://www.theorthopaedicandpainpractice.com/non-surgical-treatments-for-knee-joint-pain/