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Doctor insights on: Does Locking Knees Cause Fainting

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Dr. Rajiva Goyal
1,202 Doctors shared insights

Syncope (Definition)

Loss of consciousness and postural tone caused by diminished cerebral blood flow. Syncope may indicate a particular medical condition, however often it may occur in an otherwise healthy individual. It is a common problem, accounting for 3% ...Read more


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Can you still faint if you are sitting down with lock knees?

Can you still faint if you are sitting down with lock knees?

Faint: Fainting is due to decreased blood supply to the brain. The effects of gravity are greater when standing than sitting, so fainting is more likely standing. But it can also happen in a sitting position, even with the head down, if the brain is not being adequately perfused by blood. This might be for a variety of causes related to heart, brain or even, possibly emotional. ...Read more

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I have done some research and I may possibly have outward pronation with internal rotation of the knee. Can this cause off balance or feel faint?

I have done some research and I may possibly have outward pronation with internal rotation of the knee. Can this cause off balance or feel faint?

Fainting unlikely,: But the deformity of your leg could be related to a neurologic condition - we just would have to run a close examination and your medical history check. ...Read more

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Why have I been feeling so faint? Weak knees when standing, feeling faint, high anxiety, under high stress, 24 women, smoker feels like my knees can't support weight, light headed, feels like im going to throw up, when walking and standing im flying to ge

Why have I been feeling so faint? Weak knees when standing, feeling faint, high anxiety, under high stress, 24 women, smoker feels like my knees can't support weight, light headed, feels like im going to throw up, when walking and standing im flying to ge

See your doctor: Nobody can know what is going on with you just on the basis of that history - hundreds of things may cause all the symptoms you have, and they certainly may just be related to your anxiety and stress. It sounds like you need a thorough history, physical examination and probably some lab tests before anybody can give you a satisfactory answer, and potential treatment. ...Read more

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34, female, trying2get back into exercise after 2 yrs of no cardio (knee injuries), I find I am dizzy/faint after only 2 or 3 laps in the pool! Worried?

34, female, trying2get back into exercise after 2 yrs of no cardio (knee injuries), I find I am dizzy/faint after only 2 or 3 laps in the pool! Worried?

Not if U just start-: -Ed. It's like any new program, new muscles R called into play. It is the muscle telling Ur heart it needs more oxygen, so the vessels dilate & blood is shunted away from other areas, the brain being 2. Then Ur brain says hey, what's up? It's way of getting blood is 4 U 2 faint, lying down lets the blood pooled in the muscle gets sent 2 Ur brain & U wake up. Just start slowly & grad increase. ...Read more

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Diagnosed PPD mid Feb. Lost 70lbs since. May31st-June8th lost 8lbs. Back/knee/rib pain, headaches, faint, random bruising, could this be something else?

Diagnosed PPD mid Feb. Lost 70lbs since. May31st-June8th lost 8lbs. Back/knee/rib pain, headaches, faint, random bruising, could this be something else?

PPD positive: Is this PPD positive? If so with weight loss and rib pain needs to rule out Tuberculosis. Must see a physician as soon as possible for further investigation, like blood test, xray chest and immediate treatment. ...Read more

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What could cause my knee to lock up in pain?

What could cause my knee to lock up in pain?

Some torn inside the: Knee, when you have torn meniscus inside the knee this get between the bone and luck the knee.. ...Read more

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What's caused my left knee to lock up?

What's caused my left knee to lock up?

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. ...Read more

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Can your tibia lock? What causes my knee to shift and lock and pop painfully?

Can your tibia lock? What causes my knee to shift and lock and pop painfully?

Most commonly: "Locking" is due to a significant "internal derangement" (Torn cartilage) and an MRI is usually the next step. "Popping" may be due to a piece of loose cartilage "hanging" from a tear and "catching"BETWEEN the tibia/femur where they "meet" IN SHORT YOu NEED TO SEE AN ORTHOPEDIST.

Hope this helps!
Dr Z ...Read more

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What is an osteomoty of the knee? After having that done would it cause the knee to lock and click?

What is an osteomoty of the knee? After having that done would it cause the knee to lock and click?

Knee Osteotomy?: Knee osteotomy is an alternative to total knee replacement surgery. It is for selected younger persons with only portion of the knee affected by osteoarthritis. Most need knee replacement later, however. If a wrong candidate is selected, the outcome will be poor. Please be very careful in deciding... http://orthopedics. About. Com/od/hipkneearthritis/a/osteotomy. Htm. ...Read more

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What causes my knee to lock when walking? My knee shifts and pops alot and is very painful? Please help

What causes my knee to lock when walking? My knee shifts and pops alot and is very painful? Please help

Internal: Derangement of the knee joint. Please see an orthopedic surgeon and you will need an exam. Anti- inflammatory medication and imaging studies like an MRI. ...Read more

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What causes your knee to lock and become instabled? I am looking for a answer to my question about displacement of mensical root?

What causes your knee to lock and become instabled? I am looking for a answer to my question about displacement of mensical root?

Meniscus injury: The anterior and posterior meniscal roots are the sites where the knee meniscus attaches to the central tibial plateau. Your symptoms of locking and buckling sound like the symptoms of a torn meniscus. The meniscus, a cartilage in your knee that acts as a "shock absorber" between the two bones can be torn in various places. Sounds like you had a tear at the root. ...Read more

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How is a displace superior displaced meniscus repaired? Or can it be repaired? Is that is what is cause my knee to lock and click with pain?

How is a displace superior displaced meniscus repaired? Or can it be repaired? Is that is what is cause my knee to lock and click with pain?

Meniscus tears: In individuals above the age of 20 or so are typically not repairable and often require partial excision. This often takes care of any pain, swelling and discomfort. Yes it is what is causing your pain. See an orthopaedic surgeon. ...Read more

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What are the symptoms of a meniscus tear? What does it mean when a MRI says a displacement at the meniscus root? Does that cause a knee to lock?

What are the symptoms of a meniscus tear? What does it mean when a MRI says a displacement at the meniscus root? Does that cause a knee to lock?

Giving way: Meniscal tears usually cause mechanical instability. The primary symptom is buckling or giving out. A displaced meniscus can cause the knee to lock. The meniscal root is where it attaches either in the front or back of the knee. Depending on your age it can be repaired or removed but is almost always a surgical treatment. See a good orthopedic surgeon. ...Read more

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What are the side effects of having a orthovisc injection? Does osetoarthritis cause the knee joint to lock and clunk? I am at a loss of what do next

What are the side effects of having a orthovisc injection? Does osetoarthritis cause the knee joint to lock and clunk? I am at a loss of what do next

No real side: Effects you can get a flare and some soreness from the injection some people can be allergic to the non-synthetic versions such as synvisc (hylan g-f 20). They do help and do better in people with mild moderate arthritis. It doesn't reverse DJD but it does prevent it from accelerating. Arthritis can cause a clunk. I would see an ortho doc and have them go through your options. ...Read more

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Can a crack in the knee cartilage cause the knee to shift and lock? Can the tibia sublux?

Can a crack in the knee cartilage cause the knee to shift and lock? Can the tibia sublux?

Yes if referring-: -2 the meniscus. They can cause locking, giving way, & even a feeling that the knee shifts. If U have these symptoms you need 2 see your orthopedic surgeon 4 an eval. ...Read more

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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.

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.

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. ...Read more

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I have a small tear in my ACL which caused a severe bone bruise. Its been 2 months, can't lock out my knee, have pain...How much longer to heal?

See ortho: You need to see an orthopedic doctor and perhaps get some physical therapy since this may cause problems with muscle contracture and atrophy. Make an appt now since permanent damage may already have occurred. ...Read more

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What causes a knee joint to lock up? Is a displacement ot the mensicus root considered a tear? What is medium size joint effusion mean?

What causes a knee joint to lock up? Is a displacement ot the mensicus root considered a tear? What is medium size joint effusion mean?

A meniscus tear: The most common cause of a locked knee is a large meniscus tear. When this happens, a portion of the meniscus gets stuck in a bad spot. This doesn't allow the knee to move freely, causing it to lock. Displacement of the meniscus root is a certain kind of tear. Sometimes, it can be repaired which can be hard. See an experienced surgeon. An effusion is fluid in the knee, likely from the tear. ...Read more

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Dr. Jeffrey Wint
146 Doctors shared insights

Fainting (Definition)

Faintness is a clinical finding similar to a loss of consciousness and collapse. This can include ...Read more


Passed Out (Definition)

Or passing out implies loss of consciousness. Frequently a cardiac ...Read more