Hi welcome to HCM
I can understand your concern for your painful pop with stiff knee post
injury .
Dear , your condition of painful pop is a natural process after injury . According to process of natural healing ,,it goes back on its own if you give time to recover by resting , applying
analgesic creams and wearing braces in case of dislocation .
Little exercise in slow movement , mild
massage with olive oil and stretching slowly to strengthen the injured location will help to be on your feet slowly .
Turmeric powder ,a level spoon , in a cup of hot milk twice a day , accelerate the process of healing , due to its antiseptic and analgesic properties .
If problem persists ,you must consult physician .
Hope this helps solve your query .
Take care . All the best .