Calcium Pyrophosphate Dihydrate Deposition Disease
(CPPD; Pseudogout; Chondrocalcinosis)
DefinitionCalcium pyrophosphate dihydrate deposition disease (CPPD) is a build up of calcium crystals in the joints. These crystals cause inflammation in the joints, which causes arthritis like conditions known as:
- Pseudorheumatoid arthritis
|Arthritis of the Knee|
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CausesIt is not known what causes these calcium pyrophosates to form, but genetics appears to play a role.
Risk FactorsIncreasing age is the most common factor that may increase your chance of getting CPPD. Other factors include:
- Family members with CPPD
- Previous joint damage
- Hypothyroidism —an underactive thyroid
- Hemochromatosis —excess iron storage
- Overactive parathyroid glands
- Hypercalcemia—excess calcium in the blood
- Low magnesium levels in the blood
SymptomsIn most cases, CPPD does not lead to symptoms. Symptoms may come and go in acute attacks called flare-ups.Pseudoosteoarthritis symptoms are the most common type, especially in the knee. Symptoms may be on both sides of the body, but are generally worse on one side. Pseudoosteoarthritis may cause:
- Joint degeneration that worsens over time
- Joint misalignment and deformity
- Periodic swelling may be seen in chronic cases
- Sudden, intense pain in one joint
- Warmth, redness, and swelling
- Joint damage from the breakdown of cartilage, which can lead to chronic pain
- Joint swelling
- Morning stiffness in the joints
- Joint deformities
DiagnosisYour doctor will ask about your symptoms and medical history. A physical exam will be done. Tests can be used to diagnose CPPD, or to rule out other conditions.Tests may include:
- Synovial fluid analysis on the affected joint
- Blood tests—to rule out other conditions
- Imaging tests such as:
TreatmentThere is no cure for CPPD and nothing is available to dissolve the crystal deposits that already exist.Treatment of CPPD is focused on managing the discomfort during flare-ups. Without treatment, the pain and discomfort of CPPD will go away on its own within days to weeks.Talk with your doctor about the best treatment plan for you. Rest, ice, and elevation may help relieve some pain. Other treatment options may include:
MedicationsMedication may help to decrease inflammation, pain, and stiffness. Medications may include:
- Nonsteroidal anti-inflammatory drugs (NSAIDs)
- Gout medications that change the way the body reacts to the crystals
ProceduresAdditional procedures may be needed if home care and medications are not effective. Additional procedures may include:
- Corticosteroid shots—injected directly into the affected joint to decrease inflammation
- Arthrocentesis—to remove excess fluid and crystals
- Surgery—to repair or replace any damaged joints
|Steroids Injected into Joint|
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PreventionThere are no current guidelines to prevent CPPD because the cause is not clear.
American College of Rheumatology
National Institute of Arthritis and Musculoskeletal and Skin Diseases
The Arthritis Society
Calcium pyrophosphate dihydrate deposition disease. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated June 18, 2013. Accessed August 26, 2013.
Calcium pyrophosphate dihydrate crystal deposition disease (CPPD) (Pseudogout). The Arthritis Foundation website. Available at: http://www.arthritis.org/conditions-treatments/disease-center/calcium-pyrophosphate-dihydrate-crystal-deposition-disease-cppd-pseudo-gout. Accessed August 26, 2013.
Calcium pyrophosphate deposition (CPPD) (formerly called pseudogout). American College of Rheumatology website. Available at: http://www.rheumatology.org/practice/clinical/patients/diseases%5Fand%5Fconditions/pseudogout.asp. Updated September 2012. Accessed August 26, 2013.
Tenenbaum J. Inflammatory musculoskeletal conditions in older adults. Geriatrics Aging. 2005; 8(3):14-17.
Pseudogout. Cleveland Clinic website. Available at: http://my.clevelandclinic.org/orthopaedics-rheumatology/diseases-conditions/hic-pseudogout.aspx. Accessed on August 26 ,2013.
4/24/2014 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed: Wise JN, Weissman BN, et al. American College of Radiology (ACR) Appropriateness Criteria for chronic foot pain. Available at: http://www.acr.org/~/media/ACR/Documents/AppCriteria/Diagnostic/ChronicFootPain.pdf. Updated 2013. Accessed April 24, 2014.
- Reviewer: Fahran Tahir, MD
- Review Date: 06/2013
- Update Date: 04/24/2014