Unstable kneecap: when to get help

1. 1

   Is any of this happening now?

   Call 911

   Seek emergency care if:

   • The kneecap is visibly out of place
   • The foot becomes cold, pale, blue, numb or unusually weak
   • There is an open wound over the knee or bone is visible
   • The injury involves major trauma or severe uncontrolled pain
   Other emergency signs, for anyone

   • Someone who is struggling to breathe, gasping, choking, or cannot get words out
   • Someone who has chest pain, tightness or pressure lasting more than a few minutes
   • Someone who has sudden weakness or drooping on one side of the face or body, slurred speech, or sudden confusion
   • Someone who is unconscious, or cannot be woken
   • Someone who is bleeding heavily and it will not stop with firm pressure
   • Someone who has had a seizure that will not stop, or does not wake up afterwards
   • Someone who has lips or skin that look pale, blue, grey or blotchy
   • Someone who you believe has taken an overdose or swallowed something poisonous
   Yes, one of theseNo, none of these
2. 2

   Is any of this happening?

   Be seen today

   Get prompt medical assessment after a suspected dislocation even if the kneecap returned by itself.

   An examination and imaging may be needed to check for a fracture or cartilage injury.

   A knee that locks and cannot fully bend or straighten also needs prompt assessment because a loose fragment may be blocking movement.

   Yes, one of theseNo, none of these
3. 3

   Does any of this apply?

   Book an appointment

   Arrange routine follow-up if the knee repeatedly buckles, the kneecap keeps slipping, swelling continues, or rehabilitation is not restoring movement and function.

   Yes, one of theseNo, none of these

Every sign above is quoted from the sofidex article on Unstable kneecap. If you are not sure, err upward — it is always reasonable to be checked.