Where your knee hurts narrows the likely cause considerably. The knee is not one structure but several, and each sits in its own zone, so pain at the front points somewhere different than pain behind or inside. The knee pain location chart below maps eight areas of the knee, what each feels like, the causes most often behind it, and what makes it worse.

Find your spot in the table, then read the section underneath.

Where it hurts	What it usually feels like	Most likely causes	Worse when
Front of the knee, around the kneecap	Dull ache under or around the kneecap, sometimes grinding	Patellofemoral pain, patellar tendinopathy, prepatellar bursitis	Stairs, squatting, standing after sitting
Inner (medial) knee	Ache inside, sometimes a sharp catch	Medial osteoarthritis, medial meniscus tear, pes anserine bursitis, MCL strain	Twisting, stairs, rising from a chair
Outer (lateral) knee	Sharp or burning along the outside	Iliotibial band syndrome, lateral meniscus tear, lateral compartment wear	Running, walking downhill, cycling
Behind the knee	Tightness, fullness or pressure	Baker’s cyst, hamstring tendon problems, meniscus tear	Straightening the leg fully, kneeling
Below the kneecap	Pinpoint soreness on the tendon or bony bump	Patellar tendinopathy, Osgood-Schlatter changes in younger people	Jumping, landing, kneeling, stairs
Above the kneecap	Ache or soft fullness at the top	Quadriceps tendon problems, suprapatellar effusion (fluid above the kneecap)	Straightening against resistance, deep bending
The whole knee	Vague, hard to point to with one finger	Widespread osteoarthritis, inflammatory arthritis	Mornings, cold damp days, long walks
Deep inside the joint	Deep, gnawing, out of reach	Advanced joint wear, a large effusion, cartilage damage	Weight bearing, often at rest at night

Front of the knee and around the kneecap

Three causes account for most front-of-knee pain. Patellofemoral pain comes from the way the kneecap tracks in its groove as you bend. Patellar tendinopathy irritates the tendon anchoring the kneecap to the shin. Prepatellar bursitis inflames the small fluid sac in front of the kneecap, often after kneeling work.

The sitting pattern sets this zone apart: stiffness after a long drive.

Inner knee pain

The inside of the knee has a short list of culprits: wear in the medial compartment, a medial meniscus tear, pes anserine bursitis just below the joint line, and MCL strain after a twisting moment.

It is the most common place for knee osteoarthritis to begin, because the inner half of the joint carries more of your body weight with every step.

Outer knee pain

Iliotibial band syndrome is the usual answer in people who run, hike or cycle. The IT band is a thick strip of tissue down the outside of the thigh, irritated where it passes the outer knee. It usually flares at a predictable point into a run, not at the start.

A lateral meniscus tear catches or clicks, as if the knee snags on something.

Pain behind the knee

A Baker’s cyst is a pocket of joint fluid bulging backward. Hamstring tendon problems give a more localised soreness, usually to one side, and a meniscus tear at the back of the cartilage can refer pain here.

Calf swelling and tenderness alongside pain behind the knee can indicate a blood clot, which needs same-day assessment. Our post on pain behind the knee when straightening the leg covers this in more detail.

Pain below the kneecap

Below the kneecap is the patellar tendon, the cord connecting the kneecap to the shin bone. Patellar tendinopathy produces a sore spot you can find with one fingertip.

In younger people, a tender bony bump further down often relates to Osgood-Schlatter changes, where repeated pull from the tendon irritated the growth area at the top of the shin. In adults the bump may remain and stay mildly tender.

Pain above the kneecap

Above the kneecap sits the quadriceps tendon, which attaches the thigh muscle to the kneecap. Quadriceps tendon problems cause pain when you straighten the leg against resistance or stand up from a deep squat.

The other cause is a suprapatellar effusion, fluid collecting in the pouch above the kneecap. It blurs the normal outline of the knee, and points to an underlying cause rather than being a diagnosis itself.

Pain across the whole knee

When the whole joint aches and you cannot point to one spot, the problem is usually inside the joint rather than around it. Widespread osteoarthritis does this, and so does inflammatory arthritis, where the immune system irritates the joint lining.

Osteoarthritis pain tracks with use and eases with rest. Inflammatory arthritis is worse after rest, brings prolonged morning stiffness, and often involves other joints on both sides of the body.

Pain deep inside the joint

Some people describe pain they cannot reach, deep in the middle of the knee. This usually means advanced joint surface wear, cartilage damage, or a large effusion, meaning enough fluid inside the joint to raise the pressure in it.

Deep pain that shows up at rest, particularly at night, is worth having assessed rather than waiting out. It suggests the joint is irritated continuously.

What the pattern of your pain adds to the location

• Morning stiffness easing within about half an hour fits osteoarthritis. Stiffness lasting well over an hour points toward inflammatory arthritis.
• Locking or catching suggests something mechanical, often a meniscus tear.
• Giving way points to instability, or the thigh muscle switching off because of pain.
• Swelling within hours of an injury suggests bleeding from a significant tear. Swelling overnight suggests irritation and wear.

What can be done about knee pain

Treatment follows a ladder. Load management and strengthening come first. Adjusting what provokes the knee while building the quadriceps, glutes and calf reduces the load the joint absorbs. Physiotherapy guides that, and our physiotherapists and chiropractors work alongside the physicians here.

When pain persists, a pain clinic adds more options. Hyaluronic acid injections supplement the joint’s natural lubricating fluid, easing pain and stiffness for a period of months. Platelet-rich plasma, or PRP uses a concentrated portion of your own blood, for some tendon problems and early joint wear. Both are placed using ultrasound or x-ray, so the medication reaches the exact structure.

For persistent knee osteoarthritis pain, genicular nerve radiofrequency ablation is an option for people who are not candidates for knee replacement, or not ready for it. The genicular nerves are small sensory nerves that carry pain messages from the knee to the brain. They control no muscle. Using image guidance, a physician places a fine needle beside them and uses heat from radio waves to interrupt that signal. Nothing is removed and the joint is not operated on. Relief can last several months to a year or more.

Warning signs that need urgent care

Most knee pain can wait for a routine appointment. These cannot:

• A hot, red, swollen knee with a fever, which can mean joint infection and needs emergency assessment.
• Inability to put weight on the leg after an injury.
• A knee that locks and will not straighten.
• Calf swelling and tenderness with pain behind the knee, which can indicate a blood clot.
• Knee pain after significant trauma, such as a fall from height or a collision.

Questions patients ask about the knee pain location chart

What does the location of knee pain mean?
It tells you which structure is most likely involved, because the knee’s ligaments, tendons, cartilage and bursae each sit in a different zone. Front-of-knee pain points to the kneecap mechanism, inner pain to the medial compartment, and outer pain to the IT band.

Can I diagnose my knee from a chart?
No. A chart narrows the possibilities and helps you describe the problem accurately. It cannot confirm a diagnosis, because conditions overlap in the same zone and hip or lower back problems can be felt at the knee. Examination, and sometimes imaging, settles it.

Why does my knee hurt when I bend it?
Bending loads the kneecap against the thigh bone far more than flat walking does, and compresses the back of the meniscus. Pain on bending points most often to the kneecap mechanism or a meniscus problem, especially if squatting and stairs provoke it consistently.

How long should I wait before getting knee pain looked at?
If pain has not clearly improved after about six weeks of sensible activity adjustment, have it assessed. Go sooner if the knee swells repeatedly, locks, gives way, or wakes you at night. Earlier assessment is also sensible if the knee is affecting your work or your sleep.

This article is general information, not medical advice. It cannot diagnose your pain. If your symptoms are new, worsening, or worrying you, speak with your family doctor or contact us for an assessment.

Getting your knee assessed

An assessment at our Toronto clinic works out which structure in your knee is involved, and examines the hip and lower back at the same time, since both can send pain to the knee. Options are then matched to the cause, not the symptom.

Most services here are covered by OHIP with a physician referral, which your family doctor can send through our physician referral page. You can also refer yourself directly.