Pay attention to the earliest signs of knee compromise—persistent pain, recurring swelling, morning stiffness, audible clicks, and episodes of instability. Prompt recognition allows timely intervention, limiting the risk of irreversible articular damage. An isolated twinge may simply mirror routine exertion; by contrast, symptoms that linger or intensify warrant professional review.
... https://www.totalpainspecialist.com/how-to-identify-the-early-symptoms-of-knee-pain-and-when-to-seek-treatment/