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A 33-year-old member asked:

what causes knee to slip out of joint?

2 doctor answers2 doctors weighed in
Dr. John Michalski
Orthopedic Surgery 36 years experience
Knee instability: Consider patellofemoral instability from flattened femoral condyles, deficient vmo or quad, or high valgus knee. Also consider ligament problems with acl, pcl, mcl, lcl. Check with your orthopedic surgeon or sports doc.
Dr. Robert Meislin
sports medicine 36 years experience
Knee slippage: Slipping out of joint could be due to an unstable patella femoral relationship or due to underlying acl insufficiency. A careful history, exam and, x rays and MRI may further pinpoint the diagnosis.

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Similar questions

A 44-year-old member asked:

My knee keeps cracking like its going into and out of the joint. Why?

1 doctor answer2 doctors weighed in
Dr. Ahmad M Hadied
Orthopedic Surgery 49 years experience
Usually arthritis: Cause that , when the joint surface get rough the bone dose not move smoothly as it was before it is normally smooth that cause the cracking of the joint when you move it.
ME
A 44-year-old female asked:

Can the tibibofemoral joint line click and get stuck when extending the knee?

2 doctor answers2 doctors weighed in
Dr. Darrell Herrington
Family Medicine 34 years experience
Yes: Usually due to cartilage damage, the most common being torn meniscus. See your doctor for complete evaluation - you may need an MRI to confirm the diagnosis, and then a knee scope procedure to fix the problem.
ME
A 44-year-old female asked:

What does open joint space mean in your knee?

2 doctor answers4 doctors weighed in
Dr. Joseph Shen
Cardiac Electrophysiology 31 years experience
Space between...: It is the joint space between the thigh bone, leg bone and the knee cap which are held together by ligaments and tendons. It is lubricated with joint fluid.
A 47-year-old member asked:

Could you explain what is used to treat a knee disorder relating to the joint?

1 doctor answer1 doctor weighed in
Dr. Zubin Khubchandani
Orthopedic Surgery 25 years experience
Too general a ?: There is a myriad of problems that can occur to a joint. Each needs its own individualized treatment. See your ortho doc for an eval.
Lewiston, ME
A 47-year-old female asked:

What causes throbbing along the joint line in the knee mostly medial? Is there any treatment to straightening the knee when it is stuck?

1 doctor answer1 doctor weighed in
Dr. Christopher Conti
Specializes in Emergency Medicine
LOCKED KNEE: Although there are a number of possibilities, it sounds like you injured your meniscus.. When this structure gets torn, it often produces a "wedge" in the knee joint, preventing extension. Sometimes of the "locked" knee function will improve as the inflammation goes away. Schedule a consult with me and we can make the appropriate referral for imaging and further care in your local geography.

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Last updated Oct 25, 2019
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