It is common for knee pain to return years after a PCL injury. This typically happens due to mild joint instability, muscle weakness, or early wear and tear (osteoarthritis) resulting from the original injury, rather than a new tear. For temporary relief, you can use over-the-counter pain relievers: acetaminophen for general pain, or oral NSAIDs like ibuprofen or naproxen to reduce inflammation. Topical diclofenac gel applied directly to the knee is also a great local option with fewer side effects. Please use these short-term, and consult a doctor or physical therapist to evaluate your knee stability and discuss strengthening exercises.