Knee Cap Dislocation


Knee Popping Out Of Place?

Your knee popping out of place is a dislocated kneecap (patella), it is quite common and generally takes around six weeks to heal.

knee subluxation

The patella sits in the patellofemoral groove on the front of the knee joint and glides within this groove when you bend or straighten the leg. A blow to the knee or sudden changes in direction can force the patella out of this groove and cause damage to the supporting tissues – This is what we call a dislocated kneecap.


A dislocated kneecap (patella) is not a dislocated knee. A knee dislocation is quite a rare injury, but very serious and can lead to loss of a limb.


Symptoms Of A Dislocated Kneecap

  • Obvious displacement of the kneecap
  • Severe pain
  • Swelling of the knee
  • Unable to straighten the leg
  • Unable to walk


Treatment Of A Dislocated Kneecap

A dislocated kneecap usually is not serious and will quite often go back into place by itself.

  • If the patella has reset itself apply the R.I.C.E first aid protocol and seek professional medical advice as soon as possible
  • If the patella remains dislocated call an ambulance – A medical professional will have to manipulate your kneecap back into position (known as a reduction)


You may also have a subluxation of the patella, this is a temporary, partial dislocation of the kneecap and the same treatment protocols apply.