Calcification in calcium pyrophosphate dihydrate (CPPD) crystalline deposits in the knee: anatomic, radiographic, MR imaging, and histologic study in cadavers (original) (raw)

Abstract

Objective

To demonstrate and determine the frequency and location of calcification within cadaveric knees with or without calcification typical of calcium pyrophosphate dihydrate (CPPD), utilizing histologic, radiographic and MR imaging techniques.

Design and patients

Ten cadaveric knees of elderly individuals that demonstrated no radiographic evidence of prior surgery or trauma were studied with MR imaging and subsequently sectioned in planes corresponding to those obtained with MR imaging. The slices were imaged with high-resolution radiography. Two musculoskeletal radiologists correlated the anatomic, MR and radiographic findings. Three of the knees, which did not demonstrate calcifications, were utilized as controls. Histologic sections were obtained from four knees that contained calcifications and from the three controls, and analyzed with special histologic stains that demonstrate phosphorus and calcium.

Results

Radiographic imaging and histologic analysis demonstrated widespread CPPD crystal deposition in four of the 10 knee specimens (40%). MR imaging demonstrated some calcifications only within the articular cartilage of the femoral condyles in three of the four (75%) specimens that had CPPD deposits. In all four specimens radiographs and histologic analysis were more sensitive than MR imaging. Histologic analysis demonstrated no evidence of CPPD crystals in the control specimens.

Conclusion

MR imaging is insensitive to the presence of CPPD deposits in the knee, even when such deposits are widespread. Our study suggests that the sensitivity of MR imaging was significantly better in detecting CPPD deposits in the hyaline cartilage of the femoral condyles when compared with other internal structures, even when such structures contained a higher amount of calcification.

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Authors and Affiliations

  1. Department of Musculoskeletal Radiology, University of California, San Diego, VA San Diego Healthcare System, 3350 La Jolla Village Drive, San Diego, CA 92162, USA
    M. Abreu, C. B. Chung, J. E. de Lima Jr. & D. Trudell
  2. Department of Rheumatology, University of California, San Diego, VA San Diego Healthcare System, 3350 La Jolla Village Drive, San Diego, CA 92162, USA
    K. Johnson, R. Terkeltaub & D. Resnick
  3. University of California, San Diego, VA San Diego Healthcare System, 3350 La Jolla Village Drive, San Diego, CA 92162, USA
    S. Pe

Authors

  1. M. Abreu
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  2. K. Johnson
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  3. C. B. Chung
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  4. J. E. de Lima Jr.
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  5. D. Trudell
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  6. R. Terkeltaub
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  7. S. Pe
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  8. D. Resnick
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Corresponding author

Correspondence toJ. E. de Lima Jr..

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Abreu, M., Johnson, K., Chung, C.B. et al. Calcification in calcium pyrophosphate dihydrate (CPPD) crystalline deposits in the knee: anatomic, radiographic, MR imaging, and histologic study in cadavers.Skeletal Radiol 33, 392–398 (2004). https://doi.org/10.1007/s00256-004-0767-9

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