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What Causes Knee Cap Instability?

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Posted on Fri, 9 May 2014
Question: My knee was recently treated for cellulitis which I did not have and it was bruised and swollen and all that but now when I extend my knee and bend it just a little it clicks on the inside not the outer side the outer side feels like it shifted out of place as if my kneecap were turn about 25-30° to the right towards the inside of my leg I've been told I need a mri but have yet to recieve one as they are in high demand and expensive. I have insurance that's not the problem. But I also feel very difficult to bear weight if I try to stand on it the knee buckles and my weight is left to my other leg and I have to grab something . Any ideas about what the problem is?? I've been x rayed twice nothing's broken. Also I'm quite obese looking to drop some weight as well. But I just need the knee question answered . Thank you.
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Answered by Dr. Dr. Naveen Kumar Sharma (3 hours later)
Brief Answer: This is MPFL injury Detailed Answer: Hello XXXXXXX I think you are having knee cap instability due to ligament injury. This ligament is called as MPFL . This helps in keeping knee cap in center of the knee. It can be weak since birth and can be broken with a slightest fall.This injury is more common as you are saying that you are obese. If on MRI diagnosis is confirmed then you will need a surgery to repair this ligament. I hope this answer your query. Let me know if i missed some thing. I will try to solve your problem. Thanks and take care.
Note: For further queries, consult a joint and bone specialist, an Orthopaedic surgeon. Book a Call now.
Above answer was peer-reviewed by : Dr. Vaishalee Punj
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Answered by
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Dr. Dr. Naveen Kumar Sharma

Orthopaedic Surgeon, Joint Replacement

Practicing since :2002

Answered : 4486 Questions

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What Causes Knee Cap Instability?

Brief Answer: This is MPFL injury Detailed Answer: Hello XXXXXXX I think you are having knee cap instability due to ligament injury. This ligament is called as MPFL . This helps in keeping knee cap in center of the knee. It can be weak since birth and can be broken with a slightest fall.This injury is more common as you are saying that you are obese. If on MRI diagnosis is confirmed then you will need a surgery to repair this ligament. I hope this answer your query. Let me know if i missed some thing. I will try to solve your problem. Thanks and take care.