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Doctor insights on: My Knee Is Unstable

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Sometimes my knee feels unstable and weak. When I sit down, I can feel it beating and sometimes it feels like it is twitching. What is happening?

Sometimes my knee feels unstable and weak. When I sit down, I can feel it beating and sometimes it feels like it is twitching. What is happening?

Workup/follow up: It could be a number of conditions. If you have any swelling, are unable to bear wt on that side, you should see an orthopedic specialist. If there is any numbness, tingling, weakness of the leg, a neurology appt may help to diagnose the problem. ...Read more

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I had an ACL reconstruction 6 months ago. After finishing PT my Dr said the graft is too long and my knee is unstable. Should I do another surgery?

I had an ACL reconstruction 6 months ago. After finishing PT my Dr said the graft is too long and my knee is unstable. Should I do another surgery?

If it is 2 long-: -it's probably non functioning. Only way to get stability is to have it redone. Whether you should have a re do, it's up 2 you. If you can get by with a brace fine, but @ your age having it redone can save your knee from further damage from the instability. If it were me I would go for it. ...Read more

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What does a displacement of the meniscus root mean? Why does my knee feel unstable when I stand? I do have a ACL sprain and effusion in the knee. Help

What does a displacement of the meniscus root mean? Why does my knee feel unstable when I stand? I do have a ACL sprain and effusion in the knee. Help

Tear: Meniscal root displacement likely indicates at tear. Your instability can be coming from several sources. Knee swelling, meniscus tear, and ACL strain ...Read more

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I am having ACL allograft surgery in 3 days. I am 53 yrs old and just had knee scope in May to clean up torn cartlidge. ACL is completely gone. It's been 3 months and my knee is unstable and the joint is moving out of place. Pain has increased and more da

I am having ACL allograft surgery in 3 days. I am 53 yrs old and just had knee scope in May to clean up torn cartlidge. ACL is completely gone. It's been 3 months and my knee is unstable and the joint is moving out of place. Pain has increased and more da

Unstable knee: Unstable knee, pending acl recon with allograft, will be helpful if ur articular joint surface is not overly damaged and u r aware of the Amt of required rehab needed on ur part, If last scope was may 2016, need weight bearing films to eval amount of articular surface damageb ...Read more

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I tore my mpfl so my knee is very unstable but is there another way to stabalize my knee without surgery?

I tore my mpfl so my knee is very unstable but is there another way to stabalize my knee without surgery?

See below: An orthopedic or sports medicine specialist should examine your knee to determine what options are available. Possible an orthotic knee brace might be sufficient, but I suspect surgery may ultimately be required. ...Read more

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I ran down a hill at full speed and days later my knees are feeling unstable and are experiencing aches and pains. Is it a bad idea to run a marathon?

I ran down a hill at full speed and days later my knees are feeling unstable and are experiencing aches and pains. Is it a bad idea to run a marathon?

Prob not: Hard to say w/ limited information and no physical exam... But if you have pain in your knees coming down hills that sounds like' kneecap' pain. See an ors (orthopedist) before you embark on marathon training. Some people who are ' malaligned' @ the knee will not be able to tolerate the training involved to run a marathon... If u are set on running find a 'flat' course and train accordingly ...Read more

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My knee pain came back. Look at the other question. It was because my knee was hit. It feels unstable but less pain. What if doctor doesn't find anything?

My knee pain came back. Look at the other question. It was because my knee was hit. It feels unstable but less pain. What if doctor doesn't find anything?

Your other question: Cannot see or search your other question on this forum unless you use the paid alternative to ask questions. Regardless, if your pain has improved and your doctor has not found anything, but knee feels unstable, specific exercises and pt may help. Consulting a doctor who treats lots of knee problems will provide a more accurate answer. ...Read more

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44 (f) knee is very painful lateral side. Been bad 7 wk and is now hurting all over. I have had no injury, sudden onset, unstable and popping?

44 (f) knee is very painful lateral side. Been bad 7 wk and is now hurting all over. I have had no injury, sudden onset, unstable and popping?

Meniscus/tendon: Pain and instability suggests an internal derangement of the knee, possibly a torn lateral meniscus or lateral knee tendon. 7 weeks requires an MRI and an orthopedic consultation. ...Read more

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Bilateral plica removal and knee cleanup 4 days ago. Can walk with a limp but unstable. Should I use the crutches at a crowded event tomorrow?

Bilateral plica removal and knee cleanup 4 days ago. Can walk with a limp but unstable. Should I use the crutches at a crowded event tomorrow?

Crutches for safety!: Until you can do a strong straight leg raise, signifying reasonable quadriceps strength and control, you would be safer and at less risk for injury from a fall if you used crutches in a crowded event in the coming days ...Read more

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Hello, about year ago, I was running on a threadmill and somehow my knee twisted itself, and til then, the knee is unstable. How should treat the injury?

Hello, about year ago, I was running on a threadmill and somehow my knee twisted itself, and til then, the knee is unstable. How should treat the injury?

Get examined: Hi
If it is truly unstable, possibly there's a torn ligament that needs to be repaired. You need to be seen by an orthopedic surgeon for a physical exam and who may likely order imaging like an MRI. If you're not looking to do any surgery. Wearing a knee brace and physical therapy is probably the best you could do. Hope this helps ...Read more

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Why do I feel weak in the knees and generally unstable while pregnant?

Why do I feel weak in the knees and generally unstable while pregnant?

Relaxin: Relaxin is a hormone that is released in pregnancy. It relaxes the connective tissue in your joints. This makes them looser and makes you more unstable when you walk or exercise. Relaxin is the reason pregnant women waddle. It is also the reason pregnant women are more likely to dislocate their joints. Take things slowly and use extra support when pregnant. ...Read more

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My knee keeps locking up. It's more painful then breaking a bone. It is also unstable when I plant it exp; kicking a ball.

My knee keeps locking up. It's more painful then breaking a bone. It is also unstable when I plant it exp; kicking a ball.

Signs of: Knee d locking giving away getting stuck significant pain these are signs of internal derangement see an orthopedic doctor for specific diagnosis and treatment ...Read more

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Had lateral release 2 weeks ago, knee still swollen painful & feels weak & unstable will this improve what if it stays unstable what will they do?

Had lateral release 2 weeks ago, knee still swollen painful & feels weak & unstable will this improve what if it stays unstable what will they do?

Ask your surgeon: Best one to really answer the questions is the one who fixed the knee. You could have an infection, or be bearing too much weight on it or be too active too soon which could explain the problems. This does need evaluating. If the knee is truly not stable, further repair will be needed to correct this problem ...Read more

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Knee unstable for 3months. Have pain front and back of knee and radiates down shin. Hurts to bend. Pain keeps me up at night. Trying ice and heat.?

Knee unstable for 3months. Have pain front and back of knee and radiates down shin. Hurts to bend. Pain keeps me up at night. Trying ice and heat.?

Be seen: I would be seen. An exam and appropriate studies will usually determine the cause. Ligamentous injuries, such as an injury to the ACL can cause an unstable knee. If you are having a lot of trouble with pain running down your leg, it could also be coming from your back. In severe cases pinched nerves in the back can cause weakness in the muscles around the knee making it less stable. ...Read more

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Can tight calves cause a knee to feel unstable?

Can tight calves cause a knee to feel unstable?

No: C an orthopedist ; get a knee evaluation. That's ur best path. ...Read more

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Had MRI/xray on knee doc said it was fine, but it pulses and has pain in knee, feels unstable?

Had MRI/xray on knee doc said it was fine, but it pulses and has pain in knee, feels unstable?

Hard to say: It is good to know your MRI looks fine as that would show the major ligaments in the knee and whether or not there is a problem there. Vascular or neurological causes are possible although fairly rare; it is also possible the MRI was miss read or missed something. Don't hesitate to get a second opinion. ...Read more

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Ligament laxity make the knee more unstable?

Ligament laxity make the knee more unstable?

Yes: I would recommend a lot of quad and hamstring strengthening
to strengthen the surrounding area.
Also, use of a patella sleeve or knee brace would provide
some exterior support and prevent exercise related instability. ...Read more

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Can a dislocation tear your ligaments in the knee? If so, which ones? And can this lead to an unstable knee?

Can a dislocation tear your ligaments in the knee? If so, which ones? And can this lead to an unstable knee?

Yes: A knee dislocation usually takes out 3 ligaments, acl, pcl, and or mcl &lcl. The first thing 2 investigate is the conition of the vascular status of the popliteal area. If I know it was a true dislocation or I reduced it my first study is an arteriogram 2 eval vasc status, ligament tears r not limb threatening & repair in my hands best done when knee quiets down. No good pic as not need 4 dx. ...Read more

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Will knee stability improve after a severe knee sprain? My knee buckles inwards and is still unstable after 4 days, even though pain is almost gone.

Will knee stability improve after a severe knee sprain? My knee buckles inwards and is still unstable after 4 days, even though pain is almost gone.

Time Heals: Ligament and tendon sprain (as in the knee) can take months to heal. After ensuring that you have no major tears of meniscus or ligaments, you will benefit from using a brace (the otc elastic kind may be sufficient) - this will help stabilize the joint allowing better healing. Range of motion exercise, but but heavy exercise will benefit. Easy does it! ...Read more

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OCD surgery 6y ago unstable OCD in knee 10 months ago-now bigger+another 8mm+multiple 1-3mm OCDs. Went from unstable to stable. Extreme pain. Surgery?

OCD surgery 6y ago unstable OCD in knee 10 months ago-now bigger+another 8mm+multiple 1-3mm OCDs. Went from unstable to stable. Extreme pain. Surgery?

Complex: Redo knee surgery is a complex issue that is best sorted out by your orthopedic surgeon. There are too many factors to consider for a short answer online forum. Hope this helps! ...Read more

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OCD surgery 6y ago, unstable OCD in knee 10 months ago-now bigger+another 8mm+multiple 1-3mm OCDs. Went from unstable to stable. Extreme pain. Surgery?

OCD surgery 6y ago, unstable OCD in knee 10 months ago-now bigger+another 8mm+multiple 1-3mm OCDs. Went from unstable to stable. Extreme pain. Surgery?

Sounds like surgery-: -is the option. It also depends on what procedures R Bing done. Micro fracture, screwing the piece in place, or autograph bone/cartilage plugs U R young so B sure U R Cing a fellowship trained sports medicine orthopedic surgeon. There R some more sophisticated means, but very costly such as chondrocyte cultures. ...Read more

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I slightly twisted my knee and heard a pop. There was no pain, no swelling. I could walk, put weight, although felt weak/unstable?

I slightly twisted my knee and heard a pop. There was no pain, no swelling. I could walk, put weight, although felt weak/unstable?

May need to see MD: Usually pops have to do with abnormal movement or tears of cartilage. In the knee this could involve ligaments, tendons or the meniscus. It is good that there is no pain or swelling but if your knee feels unstable then use an elastic bandage like a Ace wrap to improve stability and see your doctor if this does not improve in a few days. ...Read more