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A member asked:
Can a displace mensical root cause locking of the knee joint? what causes a knee joint to lock up? unable to straighten the leg without extreme pain.
A doctor has provided 1 answer
Yes: A torn meniscus can cause the knee to "lock" when the flap of meniscus that is torn gets pinched between the femur and tibia. This would be the most common reason for a knee joint to lock although sometimes a loose body which is a little piece of bone can do the same thing. See an orthopedist.
Answered 2/11/2016
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