Chondrocalcinosis 2: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Chondrocalcinosis 2?
A primary care doctor is often first to evaluate painful joints and can order X-rays and joint fluid testing. Care is often shared with a rheumatologist, a joint disease specialist. Orthopedic surgeons may help if a joint is severely damaged.
What it is
Chondrocalcinosis 2 is a rare genetic condition in which calcium crystals build up in the cartilage that cushions the joints, most often in the knee and wrist. Doctors call this family of conditions CPPD. The type 2 form runs in families. Many people never feel pain, while others have sudden attacks resembling gout.
Symptoms
Symptoms vary from person to person. Some people have no symptoms and only learn of the deposits on an X-ray taken for another reason. Others have sudden attacks in which a joint becomes painful, swollen, warm, and red, lasting days to weeks. Over time, the deposits can damage cartilage and lead to osteoarthritis.
Causes and who gets it
Chondrocalcinosis 2 is caused by a change in the ANKH gene, which leads to calcium crystal deposits in cartilage. It is autosomal dominant, meaning a child of an affected parent has a one in two chance of getting the changed gene.
How doctors diagnose it
Doctors often first spot the condition on an X-ray showing calcium deposits in the cartilage. To confirm a flare, a doctor can remove joint fluid and check it for calcium pyrophosphate crystals. Blood tests may rule out gout and infection.
Treatment
There is no treatment that removes the crystals, so care focuses on easing symptoms and protecting the joints. Flares are treated with anti-inflammatory medicines such as NSAIDs, or sometimes steroid pills or a joint injection. Rest, ice, and gentle activity between flares can help.
When to see a doctor
See a doctor if a joint suddenly becomes painful, swollen, warm, or red. Get care quickly if the joint is very hot, you have a fever, or the skin looks infected. Also see a doctor if attacks recur or pain limits daily activities.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor charges more and often works alongside insurance. Either type can order X-rays, test joint fluid, prescribe medicines, and follow you between flares, referring you to a specialist when needed. These doctors often offer longer visits and easier access.
Common questions
Is chondrocalcinosis 2 the same as gout?
No. Gout is caused by uric acid crystals. Chondrocalcinosis 2 is caused by calcium pyrophosphate crystals. The attacks can feel similar, so doctors often test joint fluid to tell them apart.
Can the crystals be removed from my joints?
There is currently no reliable way to dissolve or remove the crystals once they form. Treatment aims to control pain and swelling and keep the joints working well.
Will my children inherit it?
Because the condition is autosomal dominant, each child of an affected parent has a one in two chance of inheriting the changed gene. Having the gene does not always mean a person will have symptoms.
Can diet or exercise help?
Regular gentle exercise, keeping a healthy weight, and protecting the joints can ease stress on the knees and wrists. There is no proven diet that removes the crystals, but a doctor can suggest safe ways to stay active during and between flares.
Sources
- NIH Genetic and Rare Diseases Information Center - Chondrocalcinosis 2
- National Organization for Rare Disorders - Familial Calcium Pyrophosphate Deposition Disease
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
