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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Locked Knees?

i have a history of locking in my knee, which appears to be pseudo locking rather than true locking. 8 weeks ago it locked while turning over in bed, and took 6 hours to release in hospital after heavy pain relief (morphine). I still have alot of pain, and limited movement, but my MRI is clear. There is significant tenderness around the knee cap, and twinging up the back of my leg. The lock was to the back lateral side of the knee.
Mon, 12 Jun 2017
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Orthopaedic Surgeon,  's  Response
Hello,

The main reasons that cause locking of the knee are three.
•     Frist, meniscus tear
•     Second, lose bodies from osteochondral defects of the cartilage. Both of these conditions should be seen on MRI.
•     Third cause might be patella (knee cup) dislocation laterally on the outer part of the knee where you pain is. Then the patella reduces in place and may dislocate again.

The third condition is more difficult distinguished in MRI. I think the third option might be your case. I suggest you to see another orthopedic surgeon and discuss this option.

Hope I have answered your query. Let me know if I can assist you further.

Regards,
Dr. Edvin Selmani
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What Causes Locked Knees?

Hello, The main reasons that cause locking of the knee are three. • Frist, meniscus tear • Second, lose bodies from osteochondral defects of the cartilage. Both of these conditions should be seen on MRI. • Third cause might be patella (knee cup) dislocation laterally on the outer part of the knee where you pain is. Then the patella reduces in place and may dislocate again. The third condition is more difficult distinguished in MRI. I think the third option might be your case. I suggest you to see another orthopedic surgeon and discuss this option. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Edvin Selmani