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Knee

The knee is the middle area on the front of the leg, between the thigh and lower leg, and covers both skin, muscles, tendons and the underlying kneecap.

Quick version

What is the knee?

The knee is the front, outer part of the middle part of the leg where the thigh and lower leg meet. The most obvious structure on the front is the kneecap (patella), which is embedded in the tendon from the front of the thigh. The knee has an important role in the movement of the leg, but is also a common site for pain and injury due to pressure, strain and trauma to its surface.

Anatomy of the front of the knee

The front of the knee is dominated by the kneecap, which lies inside the quadriceps tendon. Beneath the kneecap is a mucous sac (bursa) and tendon attachments that can cause discomfort when overused. The skin over the knee is thin and mobile, making the area sensitive to pressure and impact.

Function and load

The knee allows the leg to bend and extend. The front of the knee acts as a protector when walking, running and kneeling. It is exposed to pressure from muscles and body weight, especially when climbing stairs, squatting and sitting down.

Common causes of pain in the front

Anterior knee pain is often caused by overload, inflammation of the bursa, softening of the cartilage behind the kneecap or irritated tendon attachments. This is common in young athletes and people who spend a lot of time on their knees.

Common conditions and diseases

Pain in the front of the knee can be due to Schlatter (in growing children), jumper's knee (tendon inflammation), patellofemoral pain syndrome, or bursitis (inflammation of the bursa).

Examination and diagnosis

The front of the knee is examined by the doctor pressing on the structures around the kneecap, testing the muscles and tendons, and evaluating gait and load patterns. Sometimes ultrasound or MRI of the knee is used for unclear pain or suspected cartilage damage.

Relevant symptoms

  • Pain when walking up stairs or after sitting still
  • Tenderness over the lower edge of the kneecap
  • Clipping or cracking sounds with movement
  • Swelling at the front of the knee
  • Pain when kneeling

Related conditions and diagnoses

  • Patellofemoral pain syndrome
  • Jumper's knee
  • Schlatter's disease
  • Prepatellar bursitis
  • Chondromalacia patellae

Questions and answers

Runner's knee is an overuse injury in which a tendon on the outside of the knee becomes irritated, often during long-distance running. The condition causes pain during activity.

Pain in the front of the knee is often due to overuse, irritated tendon attachments, bursitis, or cartilage problems behind the kneecap.

Jumper's knee is an inflammation of the patellar tendon that causes pain just below the kneecap. This occurs especially when jumping or walking up stairs.

Yes, growing children, often between the ages of 8-15, can suffer from Schlatter's disease, which causes pain under the kneecap where the tendon attaches to the tibia.

You should contact healthcare for an assessment if the pain does not go away, affects walking, swells, or makes it difficult to bend the leg.

Treatment includes rest, physical therapy, adapted exercise and sometimes anti-inflammatory medications or knee braces.

Popping is often harmless but can be caused by the kneecap moving unevenly or by irritation in tendons or bursae.

You can prevent knee pain by strengthening your thigh muscles, avoiding overtraining, using good shoes, and varying the load during exercise and work.

Tests related to Knee


MRI Knee

MRI Knee

Magnetic Resonance Imaging
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Medical comment included

With us, you will always receive a doctor’s opinion from a licensed physician when you order a medical check-up that includes a medical opinion. The doctor’s opinion includes an overall assessment of your results from laboratory analysis. The opinion is individual and may vary depending on the specific tests your medical check-up includes.

What can I expect in the medical report?

The medical opinion will summarize the results of your test results to give you an assessment of your health including any abnormalities outside the reference ranges. In case of abnormalities or need, your doctor may also contact you for a free conversation to explain and talk about your results. Remember that a health check always includes specific test results based on your health and your personal circumstances. Values outside the reference range should therefore always be discussed with a doctor before any decisions regarding possible treatment are made.

What does the doctor look at during a health check?

When assessing a blood test or health check, your doctor will look at several different parameters to evaluate your health and identify any abnormalities. Below are some common aspects your doctor may examine:

Blood counts: Your doctor will check red, white and platelet counts to identify any signs of anaemia, infection or bleeding.

Nutrients and biochemical markers: Includes, for example, analysis and monitoring of blood sugar (glucose) levels, electrolyte levels (e.g. sodium, potassium), liver function tests (e.g. liver enzymes), kidney function tests (e.g. creatinine, urea) and lipid profile (e.g. cholesterol, triglycerides). The results of the tests give your doctor a better idea of your organ function, blood sugar level, cholesterol conditions and other important health aspects.

Inflammatory markers: Your doctor may measure health markers such as C-reactive protein (CRP) or red blood cell decrease rate (SR) to evaluate inflammatory conditions or confirm an active infection.

Hormone levels: Your doctor may monitor your hormone levels to assess hormonal imbalances or diseases, such as thyroid hormones (TSH, T3, T4), sex hormones or other specific hormones such as testosterone levels.

Specific tests: Depending on your goal of your health check or medical history, your doctor may look into specific tests to investigate conditions or diseases, such as diabetes, vitamin deficiency or autoimmune diseases.

In conclusion, the doctor weighs all test results based on the health check to assess your overall health, detect any abnormalities and identify possible underlying medical conditions.

What happens if I have abnormal test results?

If your blood count is abnormal, this will be addressed in your personal medical opinion. Depending on the nature and extent of the abnormality, your doctor may also contact you directly through the test result service for further guidance. Various measures and advice will be provided based on the specific abnormalities observed along with your medical history.

Call included

Call included, one of our doctors will contact you.
  • MRI knee – advanced magnetic resonance imaging without referral.
  • Recommended for knee pain, instability, or suspected injury.
  • High-precision imaging of meniscus, cruciate ligaments, cartilage, and joint structures<./li>
  • Fast, painless examination with specialist evaluation within a few days.

4 295 kr

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