Knee Pain

Knee pain is a very com­mon joint com­plaint with many caus­es, from sud­den injuries like a torn lig­a­ment to grad­ual wear from arthri­tis or overuse. It can show up as aching, stiff­ness, swelling, or sharp pain with move­ment. Most knee pain improves with rest and sim­ple care, though last­ing or severe pain should be checked by a provider.

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What caus­es knee pain?

Knee pain can come from the bones, car­ti­lage, lig­a­ments, menis­cus, ten­dons, or the flu­id-filled cush­ions (bur­sae) in and around the joint, which is why the cause is not always obvi­ous. Most rea­sons fall into a few groups: sud­den injuries, overuse, and grad­ual wear. These are some of the most com­mon causes:

Oth­er caus­es include bur­si­tis (swelling of a cush­ion­ing sac), gout or oth­er inflam­ma­tion, a kneecap that slips out of place, and pain referred from the hip. Pin­ning down which one it is, based on how the pain start­ed, where it hurts, and what makes it worse, is the key to treat­ing it well.

When should I wor­ry about knee pain?

Most knee pain is not an emer­gency and can be han­dled at home or with a rou­tine vis­it, but cer­tain signs mean you should be seen right away. Use these to decide where to go.

Go to the ER or imme­di­ate care right away if you have any of these:

See an ortho­pe­dic or sports med­i­cine provider soon, though it is not an emer­gency, if knee pain lasts more than a week or two, keeps com­ing back, fol­lows a spe­cif­ic injury, or lim­its your dai­ly activ­i­ties or sleep. Mild, short-lived knee pain after activ­i­ty can usu­al­ly be cared for at home first.

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How is knee pain diagnosed?

A provider usu­al­ly starts with your his­to­ry, when the pain began, what you were doing, and where it hurts, along with a phys­i­cal exam that tests the knee’s move­ment, sta­bil­i­ty, and ten­der spots. An X‑ray can show arthri­tis, align­ment, or a frac­ture, while an MRI is used when a lig­a­ment, menis­cus, or oth­er soft-tis­sue injury is sus­pect­ed. Many caus­es can be iden­ti­fied from the exam and his­to­ry alone, with imag­ing added when it will change the plan.

How is knee pain treated?

Treat­ment depends on the cause, but most knee pain is man­aged with­out surgery. Com­mon approach­es include:

• Self-care: rest, ice, com­pres­sion, and ele­va­tion (RICE) for a flare, plus eas­ing the activ­i­ties that aggra­vate it
• Phys­i­cal ther­a­py: tar­get­ed exer­cis­es to strength­en the mus­cles around the knee, improve flex­i­bil­i­ty, and cor­rect move­ment pat­terns, often the most effec­tive long-term fix
• Med­ica­tions: over-the-counter anti-inflam­ma­to­ries or pain reliev­ers, used as directed
• Brac­ing or sup­ports, and sup­port­ive footwear or orthotics for cer­tain problems
• Injec­tions, such as a cor­ti­cos­teroid or oth­er options, for some types of arthri­tis or inflammation
• Surgery: reserved for spe­cif­ic prob­lems like a torn lig­a­ment, a locked menis­cus, or advanced arthri­tis, when oth­er mea­sures have not worked

For ongo­ing or wear-relat­ed knee pain, the goal is long-term man­age­ment: keep­ing the joint work­ing and com­fort­able. That is where phys­i­cal ther­a­py and a sports med­i­cine or ortho­pe­dic provider make the biggest difference.

How can I man­age or pre­vent knee pain?

Many knee prob­lems can be eased or pre­vent­ed with a few habits. Keep­ing a healthy weight reduces the load on the joints, since even a few pounds make a real dif­fer­ence at the knee. Strength­en­ing the thigh and hip mus­cles sup­ports the joint, and stretch­ing keeps it flex­i­ble. Warm­ing up before activ­i­ty, build­ing up train­ing grad­u­al­ly, wear­ing sup­port­ive shoes, and mix­ing in low-impact exer­cise like cycling or swim­ming all help pro­tect the knees over time. For arthri­tis, stay­ing active in a joint-friend­ly way usu­al­ly helps more than resting.

Who treats knee pain?

Knee pain is treat­ed by sev­er­al kinds of providers, and where you start depends on the sit­u­a­tion. For a recent injury with sig­nif­i­cant pain or swelling, an imme­di­ate care cen­ter can eval­u­ate it, take an X‑ray, and get you start­ed, while severe injuries or signs of infec­tion or a blood clot belong in the emer­gency room. For most oth­er knee pain, an ortho­pe­dic or sports med­i­cine provider is the right specialist.

Ortho­pe­dic providers diag­nose and treat the full range of knee prob­lems, from arthri­tis to lig­a­ment and menis­cus injuries, and han­dle pro­ce­dures or surgery when they are need­ed. Sports med­i­cine providers focus on activ­i­ty-relat­ed and overuse injuries and on get­ting peo­ple back to sport or exer­cise safe­ly, often with­out surgery. Phys­i­cal ther­a­pists are cen­tral to knee care: they build the strength­en­ing and move­ment pro­grams that relieve pain, restore func­tion, and help keep the prob­lem from return­ing, whether or not surgery is involved. A pri­ma­ry care provider can also eval­u­ate knee pain and point you to the right specialist.

At Duly Health and Care, ortho­pe­dics, sports med­i­cine, and phys­i­cal ther­a­py work togeth­er across the Chica­go sub­urbs, so the diag­no­sis, treat­ment, and rehab con­nect into one plan rather than sep­a­rate stops. That team­work mat­ters for the knee, where last­ing relief usu­al­ly comes from com­bin­ing the right diag­no­sis with the right exer­cis­es and, only when nec­es­sary, a pro­ce­dure. If you are unsure where to begin, an ortho­pe­dic or sports med­i­cine provider is a sol­id start­ing point for knee pain that is not an emergency.

Fre­quent­ly asked questions

Why does my knee hurt when going up or down stairs?

Pain on stairs is one of the most com­mon knee com­plaints and often points to the kneecap (patellofemoral) area or ear­ly wear in the joint. Stairs load the front of the knee heav­i­ly, espe­cial­ly going down. It is fre­quent­ly helped by strength­en­ing the thigh and hip mus­cles, adjust­ing activ­i­ty, and improv­ing move­ment habits, often through phys­i­cal ther­a­py. If it is per­sis­tent or wors­en­ing, have it evaluated.

I have knee pain but did not injure it. What could it be?

Knee pain with­out a clear injury is com­mon and often comes from overuse, arthri­tis, kneecap track­ing prob­lems, or inflam­ma­tion like bur­si­tis or gout. Wear-relat­ed (osteoarthri­tis) pain tends to build grad­u­al­ly and feels stiff and achy, worse with activ­i­ty. Because the caus­es dif­fer a lot, pain that lasts more than a week or two, or keeps return­ing, is worth hav­ing checked so you get the right plan.

Should I rest my knee or keep moving?

It depends on the cause, but for most knee pain a short rest from what aggra­vates it, fol­lowed by gen­tle move­ment, beats long inac­tiv­i­ty. Too much rest can stiff­en the joint and weak­en the sup­port­ing mus­cles, while gen­tle activ­i­ty and tar­get­ed exer­cis­es usu­al­ly speed recov­ery. For arthri­tis espe­cial­ly, stay­ing active in a joint-friend­ly way helps. A provider or phys­i­cal ther­a­pist can tell you how much to do.

When should I see a doc­tor for knee pain?

See a provider if knee pain lasts more than a week or two, keeps com­ing back, fol­lows a spe­cif­ic injury, comes with sig­nif­i­cant swelling or insta­bil­i­ty, or lim­its your dai­ly life or sleep. Go soon­er, to imme­di­ate care or the ER, for severe pain, an inabil­i­ty to bear weight, a deformed knee, or a hot, swollen knee with fever. When in doubt, get­ting it checked ear­ly often pre­vents a big­ger problem.

Where can I get knee pain treat­ed in Chicagoland?

Duly Health and Care offers ortho­pe­dic, sports med­i­cine, and phys­i­cal ther­a­py care for knee pain across the Chica­go sub­urbs, with imag­ing and a coor­di­nat­ed plan from diag­no­sis through rehab. For a recent injury, a Duly imme­di­ate care cen­ter can eval­u­ate it and get you start­ed. You can book an ortho­pe­dic or sports med­i­cine vis­it online for ongo­ing or recur­ring knee pain.

Care at Duly Health and Care

Knee pain can side­line you from the things you love, but most caus­es respond well to the right care, and few peo­ple need surgery. Duly Health and Care com­bines ortho­pe­dics, sports med­i­cine, and phys­i­cal ther­a­py across the Chica­go sub­urbs to find the cause, ease the pain, and rebuild strength so your knee works the way you need it to. Whether your knee pain is new, recur­ring, or long-stand­ing, the team helps you move bet­ter and get back to your routine.

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Med­ical­ly reviewed by Michael Cof­fel, APN, FNP-BC · Last reviewed June 2026