Table of ContentsView AllTable of ContentsCausesWhen to See a Healthcare ProviderDiagnosisTreatmentPreventionCopingFrequently Asked Questions
Table of ContentsView All
View All
Table of Contents
Causes
When to See a Healthcare Provider
Diagnosis
Treatment
Prevention
Coping
Frequently Asked Questions
Most adults will experience knee pain when sitting on their heels or cross-legged. These positions put stress on the knee joints that can cause discomfort. However, if simply bending your knee or lowering yourself to sit in a chair causes pain, you should have your knee examined.
When determining thecauseof pain, your healthcare provider will consider thelocation of your painand the activities that exacerbate it.
This article details different reasons your knees may hurt when bending, flexing, or sitting. It also discusses ways to relieve knee pain and how to protect your knees to prevent pain.
LightFieldStudios / Getty Images
Causes of Knee Pain Upon Bending
Here is a look at different reasons why your knee may hurt when bending your leg or sitting.
Knee Pain When Walking: Potential Causes and What to Do Next
Arthritis
Arthritis of the knee can be eitherosteoarthritisor inflammatory arthritis, which includesrheumatoidarthritis (RA)and psoriatic arthritis. These types of arthritis have different root causes, but both feel burning, twisting, aching, or pins-and-needles pains. Arthritis may also cause your knee to lock up when you bend it or hurt when you try to bear weight on that leg.
Osteoarthritis—the more common type of knee arthritis—occurs when the joint structures break down. Commonly known as wear-and-tear arthritis, it is usually due to past injuries or overuse that comes with aging.
Inosteoarthritis, the soft tissues and cartilage that cushion your joints erode, making movement painful.Without the soft tissues to protect the bones in your knees, your knees may lock in place or be more prone to injury.
RAis an autoimmune disease that causes your immune system to attack your joint tissues. Over time, the inflammation causes the soft tissues to break down.
With RA, your knees may feel stiff(usually worse in the morning) and it may be difficult for you to rotate your legs or bend your knees. And after you sit down, it may be difficult to extend your legs so you can stand up again. In contrast to OA, pain with RA typically worsens with activity.
Runner’s Knee
Track and field and contact sports athletes are especially prone to runner’s knees.
Symptoms of runner’s knee include:
You may experience knee weakness or notice a rubbing or clicking sensation. You might also hear a popping or cracking noise as you bend your knee.Any of these symptoms can cause discomfort and make exercise difficult.Runner’s knee is often temporary and can improve with rest, physical therapy, and knee support,Your healthcare provider can help you come up with an individual care plan that works for your specific condition.
How to Strengthen Knees
Tendonitis
Several tendons support the knee. Inflammation of any of these tendons (tendonitis) can cause knee pain upon bending the leg. The location and type of pain provide clues to the cause and include:
Iliotiobal (IT) band syndrome
Theiliotibial(IT) bandis a thick band of fibrous tissue that starts at the hip and runs along the outer thigh to the outer shin bone (tibia) just below the knee joint. IT band syndrome causes a burning pain on the outside of the knee that spreads to the hip or thigh.
It most commonly affects runners or cyclists and is more common when you are new to the activity.Knee pain from IT band syndrome typically occurs when exercising, but may persist after the workout is over.
Prepatellar Bursitis
Theprepatellar bursais a thin, fluid-filled sack over the kneecap. Kneeling for extended periods can cause the bursa to become inflamed and irritated, a condition known as prepatellar bursitis or housemaid’s knee.
Symptoms of prepatellar or knee bursitis include:
Prepatellar bursitis is common in carpet layers, plumbers, gardeners, and other professions that require a lot of kneeling. The biggest risk with knee bursitis is infection.
Baker’s Cyst
ABaker’s cystis a fluid-filled sac in the back of the knee joint. Excess knee-joint fluid pushes through the back of the joint capsule, causing a cyst that protrudes into the back area of the knee (popliteal fossa). It is sometimes called a popliteal cyst and causes a visible bulge.
Baker’s cysts cause pain and swelling in the back of the knee joint that gets worse with activity. The pain is often described as joint tightening and stiffness upon bending or straightening.
Understanding and Treating a Knee Contusion
If your pain is severe, chronic, or seems to signal a serious musculoskeletal condition, your primary care provider may refer you to a specialist:
Diagnosing Knee Pain
Diagnosing knee pain often requires a combination of a physical exam, imaging studies, and blood work. Your healthcare provider may use the following to evaluate your knee pain.
Physical Exam
A physical exam can help your healthcare provider understand precisely where and why you are hurting. The healthcare provider may feel your knee to pinpoint swelling, irritation, or potential injuries. They may ask you to walk, stretch, sit down, or bend your knee to observe your range of motion.
Lab Tests
After you have a physical exam, your healthcare provider may request blood work. Lab tests can help differentiate between osteoarthritis and RA or other autoimmune diseases. Blood work also rules out infections, cancer, Lyme disease, or other illnesses that can cause knee pain.
Imaging
An X-ray or magnetic resonance imaging (MRI) can help your healthcare provider visualize the condition of your bones and joints. Imaging studies are usually used to identify bone fractures, arthritis, soft-tissue injuries, and other structural problems with the knee.
Your treatment plan will depend on the cause and severity of your knee pain. Treatment options range from basic lifestyle changes to surgery.
Lifestyle Changes
Some interventions for knee pain include changes to your lifestyle. Weight loss is commonly recommended as a first-line treatment for knee pain. Your doctor may recommend walking, swimming, and other low-impact exercises to help you burn calories without putting too much stress on your knees.
Some people find theanti-inflammatory diethelpful for relieving knee pain. In addition, turmeric, lemon water, antioxidants, and omega-3 fatty acids may help reduce the inflammation in your knee joints.
Check with your healthcare provider if your knees still hurt after making these adjustments. They can help you determine if a condition is causing your knee pain.
What Foods Are Good for Arthritis?
Heat or Ice
Holding a cold or hot compress to your knee may help reduce pain and joint swelling. Ice is typically recommended for new injuries and inflammation. Heat can help relieve pain associated with joint stiffness and chronic pain.
Medications
Over-the-counter (OTC) pain relievers likeTylenol (acetaminophen), Advil (ibuprofen), and Aleve (naproxen) are commonly used to relieve knee pain.
If OTC medications don’t relieve your pain, your healthcare provider may prescribe a stronger non-steroidal anti-inflammatory drug (NSAID) or a steroid pain reliever, such as prednisone.
A short course of opioid pain relievers may be prescribed for severe, acute pain. However, opioids have a high risk of addiction and should only be used sparingly.
Make sure you ask your healthcare provider if it is safe to take any of these medications. Certain people, such as those with liver disease, cannot take acetaminophen, while others, such as those with coronary artery disease or chronic kidney disease, cannot take NSAIDs
Physical Therapy
Depending on the cause of your knee pain, your healthcare provider may recommend physical therapy. A physical therapist can provide exercises to strengthen the muscles that support the knee and other therapies, including electronic muscle stimulation and ultrasound.
Acupuncture
Research shows acupuncture can help to relieve chronic pain.However, the research is mixed on whether it is effective for knee pain.
One study found no benefit of acupuncture treatments on people over age 50 with knee osteoarthritis.While another study found it may be effective in reducing osteoarthritis knee pain.
Braces and Orthotics
A knee brace may be used to support the knee while working or exercising.Orthotic shoe insertsmay also help to reduce knee strain.
Surgery
In some situations, your healthcare provider may recommend that you considerknee replacement surgery. This surgery can be helpful to people who have extensive tissue or bone damage from arthritis.
As with many other surgeries and invasive procedures, a knee replacement is often considered only after more conservative measures have been tried. Nonetheless, a medical study from 2013 found promising results for knee surgery and enhanced mobility for patients with advanced osteoarthritis.
Knee problems are more common in people who are overweight or obese. Keeping an active lifestyle and following a healthy diet can help manage your weight and prevent some knee pain. A 2013 medical study found that exercise is the first and most common form of therapy that healthcare providers recommend for managing knee pain from osteoarthritis.
Knee pain can interfere with daily life and be difficult to cope with. It can hinder your ability to work, exercise, and do things you enjoy. Pain can also put you in a bad mood. It is normal to feel frustrated when pain keeps you from doing things want—or need—to do. You may find you have a shorter fuse.
A serious knee injury will have a rapid onset of swelling, which may make it difficult to see your kneecap.This differs from the type of swelling that can come and go with arthritis. Seek emergency care.
Learn MoreBursitis of the Kneecap Symptoms and Treatment
It can depend on genetics and other factors, like whether you’ve had previous injuries. Conditions like osteoarthritis usually start in middle age and beyond.
22 SourcesVerywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read oureditorial processto learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.Mora JC, Przkora R, Cruz-Almeida Y.Knee osteoarthritis: pathophysiology and current treatment modalities.J Pain Res. 2018;11:2189-2196.Johns Hopkins Medicine.Patellofemoral pain syndrome (runner’s knee).Halabchi F, Abolhasani M, Mirshahi M, Alizadeh Z.Patellofemoral pain in athletes: clinical perspectives.Open Access J Sports Med. 2017;8:189-203. doi:10.2147%2FOAJSM.S127359Harvard Health Publishing.Oh, my aching knees.Mellinger S, Neurohr GA.Evidence based treatment options for common knee injuries in runners.Ann Transl Med. 2019;7(Suppl 7). doi:10.21037/atm.2019.04.08Cleveland Clinic.Iliotibial band syndrome.Cedars Sinai.Iliotibial band syndrome.Baumbach SF, Lobo CM, Badyine I, Mutschler W, Kanz KG.Prepatellar and olecranon bursitis: literature review and development of a treatment algorithm.Arch Orthop Trauma Surg. 2014;134(3):359-70. doi:10.1007/s00402-013-1882-7Herman AM, Marzo JM.Popliteal cysts: A current review.Orthopedics. 2014;37(8):e678-e684. doi:10.3928/01477447-20140728-52Vadell AKE, Bärebring L, Hulander E, Gjertsson I, Lindqvist HM, Winkvist A.Anti-inflammatory Diet In Rheumatoid Arthritis (Adira)—a randomized, controlled crossover trial indicating effects on disease activity.The American Journal of Clinical Nutrition. 2020;111(6):1203-1213. doi:10.1093/ajcn/nqaa019Harvard Health Publishing.Too much sitting linked to an early death.UCLA Health.Chair setup.Arthritis Foundation.Comparing pain meds for osteoarthritis.Vickers AJ, Cronin AM, Maschino AC, et al; Acupuncture Trialists' Collaboration.Acupuncture for chronic pain: individual patient data meta-analysis.Arch Intern Med. 2012;172(19):1444-53. doi:10.1001/archinternmed.2012.3654Hinman RS, McCrory P, Pirotta M, Relf I, Forbes A, Crossley KM, Williamson E, Kyriakides M, Novy K, Metcalf BR, Harris A, Reddy P, Conaghan PG, Bennell KL.Acupuncture for chronic knee pain: a randomized clinical trial.JAMA. 2014 ;312(13):1313–22. doi:10.1001/jama.2014.12660Li J, Li YX, Luo LJ, et al.The effectiveness and safety of acupuncture for knee osteoarthritis: An overview of systematic reviews.Medicine (Baltimore). 2019;98(28):e16301. doi:10.1097/MD.0000000000016301Shakoor N, Sengupta M, Foucher KC, Wimmer MA, Fogg LF, Block JA.The effects of common footwear on joint loading in osteoarthritis of the knee.Arthritis Care Res (Hoboken). 2010;62(7):917-923. doi:10.1002/acr.20165Raynauld J-P, Martel-Pelletier J, Dorais M, et al.Total knee replacement as a knee osteoarthritis outcome.Cartilage. 2013;4(3):219-226. doi:/10.1177%2F1947603513483547Susko AM, Fitzgerald GK.The pain-relieving qualities of exercise in knee osteoarthritis.Open Access Rheumatol. 2013;5:81-91. doi:10.2147/oarrr.s53974Yale Medicine.How to tell if a knee injury is serious—Yale Medicine explains.American Academy of Orthopaedic Surgeons.Prepatellar (kneecap) bursitis.Johns Hopkins Medicine.Knee pain and problems.Additional ReadingAbdel-Aziem AA, Soliman ES, Mosaad DM, Draz AH.Effect of a physiotherapy rehabilitation program on knee osteoarthritis in patients with different pain intensities.J Phys Ther Sci. 2018;30(2):307-312. doi:10.1589/jpts.30.307American Academy of Orthopaedic Surgeons.Treatment of osteoarthritis of the knee (2nd edition). Updated May 18, 2013.
22 Sources
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read oureditorial processto learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.Mora JC, Przkora R, Cruz-Almeida Y.Knee osteoarthritis: pathophysiology and current treatment modalities.J Pain Res. 2018;11:2189-2196.Johns Hopkins Medicine.Patellofemoral pain syndrome (runner’s knee).Halabchi F, Abolhasani M, Mirshahi M, Alizadeh Z.Patellofemoral pain in athletes: clinical perspectives.Open Access J Sports Med. 2017;8:189-203. doi:10.2147%2FOAJSM.S127359Harvard Health Publishing.Oh, my aching knees.Mellinger S, Neurohr GA.Evidence based treatment options for common knee injuries in runners.Ann Transl Med. 2019;7(Suppl 7). doi:10.21037/atm.2019.04.08Cleveland Clinic.Iliotibial band syndrome.Cedars Sinai.Iliotibial band syndrome.Baumbach SF, Lobo CM, Badyine I, Mutschler W, Kanz KG.Prepatellar and olecranon bursitis: literature review and development of a treatment algorithm.Arch Orthop Trauma Surg. 2014;134(3):359-70. doi:10.1007/s00402-013-1882-7Herman AM, Marzo JM.Popliteal cysts: A current review.Orthopedics. 2014;37(8):e678-e684. doi:10.3928/01477447-20140728-52Vadell AKE, Bärebring L, Hulander E, Gjertsson I, Lindqvist HM, Winkvist A.Anti-inflammatory Diet In Rheumatoid Arthritis (Adira)—a randomized, controlled crossover trial indicating effects on disease activity.The American Journal of Clinical Nutrition. 2020;111(6):1203-1213. doi:10.1093/ajcn/nqaa019Harvard Health Publishing.Too much sitting linked to an early death.UCLA Health.Chair setup.Arthritis Foundation.Comparing pain meds for osteoarthritis.Vickers AJ, Cronin AM, Maschino AC, et al; Acupuncture Trialists' Collaboration.Acupuncture for chronic pain: individual patient data meta-analysis.Arch Intern Med. 2012;172(19):1444-53. doi:10.1001/archinternmed.2012.3654Hinman RS, McCrory P, Pirotta M, Relf I, Forbes A, Crossley KM, Williamson E, Kyriakides M, Novy K, Metcalf BR, Harris A, Reddy P, Conaghan PG, Bennell KL.Acupuncture for chronic knee pain: a randomized clinical trial.JAMA. 2014 ;312(13):1313–22. doi:10.1001/jama.2014.12660Li J, Li YX, Luo LJ, et al.The effectiveness and safety of acupuncture for knee osteoarthritis: An overview of systematic reviews.Medicine (Baltimore). 2019;98(28):e16301. doi:10.1097/MD.0000000000016301Shakoor N, Sengupta M, Foucher KC, Wimmer MA, Fogg LF, Block JA.The effects of common footwear on joint loading in osteoarthritis of the knee.Arthritis Care Res (Hoboken). 2010;62(7):917-923. doi:10.1002/acr.20165Raynauld J-P, Martel-Pelletier J, Dorais M, et al.Total knee replacement as a knee osteoarthritis outcome.Cartilage. 2013;4(3):219-226. doi:/10.1177%2F1947603513483547Susko AM, Fitzgerald GK.The pain-relieving qualities of exercise in knee osteoarthritis.Open Access Rheumatol. 2013;5:81-91. doi:10.2147/oarrr.s53974Yale Medicine.How to tell if a knee injury is serious—Yale Medicine explains.American Academy of Orthopaedic Surgeons.Prepatellar (kneecap) bursitis.Johns Hopkins Medicine.Knee pain and problems.Additional ReadingAbdel-Aziem AA, Soliman ES, Mosaad DM, Draz AH.Effect of a physiotherapy rehabilitation program on knee osteoarthritis in patients with different pain intensities.J Phys Ther Sci. 2018;30(2):307-312. doi:10.1589/jpts.30.307American Academy of Orthopaedic Surgeons.Treatment of osteoarthritis of the knee (2nd edition). Updated May 18, 2013.
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read oureditorial processto learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
Mora JC, Przkora R, Cruz-Almeida Y.Knee osteoarthritis: pathophysiology and current treatment modalities.J Pain Res. 2018;11:2189-2196.Johns Hopkins Medicine.Patellofemoral pain syndrome (runner’s knee).Halabchi F, Abolhasani M, Mirshahi M, Alizadeh Z.Patellofemoral pain in athletes: clinical perspectives.Open Access J Sports Med. 2017;8:189-203. doi:10.2147%2FOAJSM.S127359Harvard Health Publishing.Oh, my aching knees.Mellinger S, Neurohr GA.Evidence based treatment options for common knee injuries in runners.Ann Transl Med. 2019;7(Suppl 7). doi:10.21037/atm.2019.04.08Cleveland Clinic.Iliotibial band syndrome.Cedars Sinai.Iliotibial band syndrome.Baumbach SF, Lobo CM, Badyine I, Mutschler W, Kanz KG.Prepatellar and olecranon bursitis: literature review and development of a treatment algorithm.Arch Orthop Trauma Surg. 2014;134(3):359-70. doi:10.1007/s00402-013-1882-7Herman AM, Marzo JM.Popliteal cysts: A current review.Orthopedics. 2014;37(8):e678-e684. doi:10.3928/01477447-20140728-52Vadell AKE, Bärebring L, Hulander E, Gjertsson I, Lindqvist HM, Winkvist A.Anti-inflammatory Diet In Rheumatoid Arthritis (Adira)—a randomized, controlled crossover trial indicating effects on disease activity.The American Journal of Clinical Nutrition. 2020;111(6):1203-1213. doi:10.1093/ajcn/nqaa019Harvard Health Publishing.Too much sitting linked to an early death.UCLA Health.Chair setup.Arthritis Foundation.Comparing pain meds for osteoarthritis.Vickers AJ, Cronin AM, Maschino AC, et al; Acupuncture Trialists' Collaboration.Acupuncture for chronic pain: individual patient data meta-analysis.Arch Intern Med. 2012;172(19):1444-53. doi:10.1001/archinternmed.2012.3654Hinman RS, McCrory P, Pirotta M, Relf I, Forbes A, Crossley KM, Williamson E, Kyriakides M, Novy K, Metcalf BR, Harris A, Reddy P, Conaghan PG, Bennell KL.Acupuncture for chronic knee pain: a randomized clinical trial.JAMA. 2014 ;312(13):1313–22. doi:10.1001/jama.2014.12660Li J, Li YX, Luo LJ, et al.The effectiveness and safety of acupuncture for knee osteoarthritis: An overview of systematic reviews.Medicine (Baltimore). 2019;98(28):e16301. doi:10.1097/MD.0000000000016301Shakoor N, Sengupta M, Foucher KC, Wimmer MA, Fogg LF, Block JA.The effects of common footwear on joint loading in osteoarthritis of the knee.Arthritis Care Res (Hoboken). 2010;62(7):917-923. doi:10.1002/acr.20165Raynauld J-P, Martel-Pelletier J, Dorais M, et al.Total knee replacement as a knee osteoarthritis outcome.Cartilage. 2013;4(3):219-226. doi:/10.1177%2F1947603513483547Susko AM, Fitzgerald GK.The pain-relieving qualities of exercise in knee osteoarthritis.Open Access Rheumatol. 2013;5:81-91. doi:10.2147/oarrr.s53974Yale Medicine.How to tell if a knee injury is serious—Yale Medicine explains.American Academy of Orthopaedic Surgeons.Prepatellar (kneecap) bursitis.Johns Hopkins Medicine.Knee pain and problems.
Mora JC, Przkora R, Cruz-Almeida Y.Knee osteoarthritis: pathophysiology and current treatment modalities.J Pain Res. 2018;11:2189-2196.
Johns Hopkins Medicine.Patellofemoral pain syndrome (runner’s knee).
Halabchi F, Abolhasani M, Mirshahi M, Alizadeh Z.Patellofemoral pain in athletes: clinical perspectives.Open Access J Sports Med. 2017;8:189-203. doi:10.2147%2FOAJSM.S127359
Harvard Health Publishing.Oh, my aching knees.
Mellinger S, Neurohr GA.Evidence based treatment options for common knee injuries in runners.Ann Transl Med. 2019;7(Suppl 7). doi:10.21037/atm.2019.04.08
Cleveland Clinic.Iliotibial band syndrome.
Cedars Sinai.Iliotibial band syndrome.
Baumbach SF, Lobo CM, Badyine I, Mutschler W, Kanz KG.Prepatellar and olecranon bursitis: literature review and development of a treatment algorithm.Arch Orthop Trauma Surg. 2014;134(3):359-70. doi:10.1007/s00402-013-1882-7
Herman AM, Marzo JM.Popliteal cysts: A current review.Orthopedics. 2014;37(8):e678-e684. doi:10.3928/01477447-20140728-52
Vadell AKE, Bärebring L, Hulander E, Gjertsson I, Lindqvist HM, Winkvist A.Anti-inflammatory Diet In Rheumatoid Arthritis (Adira)—a randomized, controlled crossover trial indicating effects on disease activity.The American Journal of Clinical Nutrition. 2020;111(6):1203-1213. doi:10.1093/ajcn/nqaa019
Harvard Health Publishing.Too much sitting linked to an early death.
UCLA Health.Chair setup.
Arthritis Foundation.Comparing pain meds for osteoarthritis.
Vickers AJ, Cronin AM, Maschino AC, et al; Acupuncture Trialists' Collaboration.Acupuncture for chronic pain: individual patient data meta-analysis.Arch Intern Med. 2012;172(19):1444-53. doi:10.1001/archinternmed.2012.3654
Hinman RS, McCrory P, Pirotta M, Relf I, Forbes A, Crossley KM, Williamson E, Kyriakides M, Novy K, Metcalf BR, Harris A, Reddy P, Conaghan PG, Bennell KL.Acupuncture for chronic knee pain: a randomized clinical trial.JAMA. 2014 ;312(13):1313–22. doi:10.1001/jama.2014.12660
Li J, Li YX, Luo LJ, et al.The effectiveness and safety of acupuncture for knee osteoarthritis: An overview of systematic reviews.Medicine (Baltimore). 2019;98(28):e16301. doi:10.1097/MD.0000000000016301
Shakoor N, Sengupta M, Foucher KC, Wimmer MA, Fogg LF, Block JA.The effects of common footwear on joint loading in osteoarthritis of the knee.Arthritis Care Res (Hoboken). 2010;62(7):917-923. doi:10.1002/acr.20165
Raynauld J-P, Martel-Pelletier J, Dorais M, et al.Total knee replacement as a knee osteoarthritis outcome.Cartilage. 2013;4(3):219-226. doi:/10.1177%2F1947603513483547
Susko AM, Fitzgerald GK.The pain-relieving qualities of exercise in knee osteoarthritis.Open Access Rheumatol. 2013;5:81-91. doi:10.2147/oarrr.s53974
Yale Medicine.How to tell if a knee injury is serious—Yale Medicine explains.
American Academy of Orthopaedic Surgeons.Prepatellar (kneecap) bursitis.
Johns Hopkins Medicine.Knee pain and problems.
Abdel-Aziem AA, Soliman ES, Mosaad DM, Draz AH.Effect of a physiotherapy rehabilitation program on knee osteoarthritis in patients with different pain intensities.J Phys Ther Sci. 2018;30(2):307-312. doi:10.1589/jpts.30.307American Academy of Orthopaedic Surgeons.Treatment of osteoarthritis of the knee (2nd edition). Updated May 18, 2013.
Abdel-Aziem AA, Soliman ES, Mosaad DM, Draz AH.Effect of a physiotherapy rehabilitation program on knee osteoarthritis in patients with different pain intensities.J Phys Ther Sci. 2018;30(2):307-312. doi:10.1589/jpts.30.307
American Academy of Orthopaedic Surgeons.Treatment of osteoarthritis of the knee (2nd edition). Updated May 18, 2013.
Meet Our Medical Expert Board
Share Feedback
Was this page helpful?Thanks for your feedback!What is your feedback?OtherHelpfulReport an ErrorSubmit
Was this page helpful?
Thanks for your feedback!
What is your feedback?OtherHelpfulReport an ErrorSubmit
What is your feedback?
