2 doctors weighed in:

What's caused my left knee to lock up?

2 doctors weighed in
Dr. Aruna Seneviratne
Sports Medicine
1 doctor agrees

In brief: Displaced Meniscus

Most likely a meniscus that is torn and flipped into the joint preventing the knee from moving.
These tears are called bucket handle meniscus tears, and usually require urgent arthroscopic surgical intervention is needed. Other causes include a loose piece of cartilage/bone that could have broken off and caught in between the bones, and arthritis. If locking is frequent, see your orthopedist.

In brief: Displaced Meniscus

Most likely a meniscus that is torn and flipped into the joint preventing the knee from moving.
These tears are called bucket handle meniscus tears, and usually require urgent arthroscopic surgical intervention is needed. Other causes include a loose piece of cartilage/bone that could have broken off and caught in between the bones, and arthritis. If locking is frequent, see your orthopedist.
Dr. Aruna Seneviratne
Dr. Aruna Seneviratne
Thank
Get help from a real doctor now
Dr. Vikram Patel
Board Certified,
34 years in practice
974K people helped
Continue
111,000 doctors available
Read more answers from doctors