Chondrocalcinosis
Informed by recognized medical guidance
Overview
Chondrocalcinosis (kon-droe-kal-sin-OH-sis) is a condition where tiny crystals made of calcium pyrophosphate build up in the cartilage of your joints. This can cause sudden pain, swelling, and redness, often in the knee. It is sometimes called pseudogout (SOO-doh-gout) because it acts like gout but is caused by different crystals.
Key facts
- It mostly affects the knees, but can also affect wrists, shoulders, and ankles.
- Flare-ups can come on suddenly and last for days or weeks.
- It is different from osteoarthritis and gout, but can overlap with them.
Chondrocalcinosis is fairly common, especially in people over 60. Many people have crystals in their joints without ever having symptoms.
It most often affects older adults, particularly those over 60. It can also occur in younger people if they have a metabolic condition like too much iron (hemochromatosis) or an overactive parathyroid gland (hyperparathyroidism).
Symptoms
- You have sudden, severe joint pain along with a high fever (temperature over 38°C/100.4°F). This could be a sign of a joint infection.
- You cannot move the joint at all.
- The joint looks deformed or is very hot and red.
- ⚠You have a sudden, very painful, swollen joint and cannot bear weight or use it normally.
- ⚠Your usual pain relievers are not helping.
Common symptoms
- Sudden, severe pain in a joint, most often the knee.
- Swelling, warmth, and redness around the joint.
- Stiffness and trouble moving the joint.
- Pain that lasts from a few days to a couple of weeks.
Symptoms in children
- Chondrocalcinosis is very rare in children. If it does occur, symptoms are similar to those in adults: sudden joint pain, swelling, and redness.
Symptoms in older adults
- Older adults may experience more frequent or chronic joint pain.
- Flare-ups may be less dramatic but last longer.
- Chronic inflammation can slowly damage the joint over time.
Causes
Main causes
- The exact reason crystals form is often unknown. It may be linked to changes in the joint cartilage with age.
- Some medical conditions can raise the risk, such as overactive parathyroid gland, too much iron in the body (hemochromatosis), low magnesium, or an underactive thyroid (hypothyroidism).
- Heavy exercise, joint surgery, or injury to a joint can sometimes trigger a flare-up.
Risk factors
- Age over 60.
- Previous joint injury or surgery.
- Family history of chondrocalcinosis.
- Certain metabolic disorders, such as hemochromatosis, hyperparathyroidism, or low magnesium levels.
When to see a doctor
See a doctor urgently if:
- If you have a sudden, very painful, swollen joint and a fever, see a doctor right away — this could be an infection.
- If the pain is so bad you cannot move the joint at all.
Book a routine appointment if:
- If you have repeated episodes of joint pain and swelling, even if mild.
- If you have joint stiffness that does not go away after a few days.
Diagnosis
Your doctor will ask about your symptoms and examine the painful joint. They will likely want to take a sample of fluid from the joint (joint aspiration) to look for the crystals under a microscope.
Tests that may be done
- Joint fluid analysis: a needle is used to draw fluid from the swollen joint. The fluid is checked for calcium pyrophosphate crystals.
- X-rays: can show calcium deposits in the cartilage (calcification), which is a sign of chondrocalcinosis.
- Blood tests: may be done to check for conditions that can cause the crystals, such as high calcium or iron levels.
What to expect at your appointment
You will be awake during the joint aspiration. The doctor will numb the skin with a local anesthetic. The procedure takes a few minutes and can also relieve pressure and pain from the swelling.
Treatment
There is no cure for chondrocalcinosis, but treatment can help manage flare-ups and prevent joint damage. The goal is to reduce pain and swelling and help you move better.
Self-care at home
- Rest the painful joint and avoid putting weight on it.
- Apply ice packs for 15–20 minutes several times a day to reduce swelling.
- Keep the joint elevated (for example, prop your knee on a pillow).
- Drink plenty of water.
Medical treatments
Your doctor may recommend anti-inflammatory medications to reduce pain and swelling. These can be taken by mouth or applied as a cream. For more severe flare-ups, a short course of steroids (given as pills or an injection into the joint) may be used. Always follow your doctor’s advice on which medicines and doses are right for you.
When is surgery considered?
Surgery is rarely needed. If the joint has been severely damaged by repeated inflammation, a joint replacement (such as a new knee) may be considered after other treatments have been tried.
Living with this condition
You can live a full life with chondrocalcinosis. During a flare-up, rest and ice will help. Between flare-ups, gentle movement is good. Learn to recognize what triggers your attacks — for example, overuse of a joint or getting dehydrated.
Lifestyle tips
- Stay active with low‑impact activities like walking, swimming, or cycling.
- Keep a healthy weight to reduce stress on your joints.
- Stay well‑hydrated — drink water throughout the day.
- Avoid exercises that make your joint hurt more.
Diet and exercise
There is no special diet proven to cure chondrocalcinosis. However, eating a balanced diet and maintaining a healthy weight can help your joints. Drinking enough water is important. Gentle stretching and strengthening exercises can keep joints flexible.
Mental health and emotional wellbeing
Living with a condition that causes sudden pain can be stressful and frustrating. It is normal to feel worried or down. Talk to your doctor if your mood or daily life is affected. Joining a support group or speaking with a counsellor can help.
Prevention
It is not possible to prevent crystals from forming or to remove them once they are there. However, managing any underlying medical conditions (like high calcium or iron levels) may help reduce the risk of flare-ups. Staying hydrated and avoiding injury to joints may also lower your chances of symptoms.
Complications
If left untreated
- Repeated flare-ups can damage the joint cartilage over time, leading to chronic osteoarthritis.
- Chronic inflammation may cause cysts or bone spurs around the joint.
- Very rarely, large collections of crystals called tophi can form, but this is not common.
Long-term outlook
Most people with chondrocalcinosis have occasional flare-ups that can be managed well with treatment. The condition does not shorten your life. With proper care, you can stay active and keep joint damage to a minimum.
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 16, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.