Simultaneous occurrence of calcium pyrophosphate dihydrate and basic calcium phosphate (hydroxyapatite) crystals in a knee

P. B. Halverson, Herman S Cheung, R. Johnson, J. Struve

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

An 82-year-old man developed periarticular roentgenographic calcifications of the knee joint. Fragments of meniscus and peritendinous tissue were collected during total knee arthroplasty. Crystals were released from tissues by collagenase digestion. Calcium pyrophosphate dihydrate crystals were identified in the meniscus, and basic calcium phosphate crystals were identified in the peritendinous tissue. Methods of crystal identification included compensated polarized light microscopy, scanning electron microscopy with X-ray energy dispersive analysis, and X-ray diffraction.

Original languageEnglish
Pages (from-to)162-165
Number of pages4
JournalClinical Orthopaedics and Related Research
Issue number257
StatePublished - Jan 1 1990
Externally publishedYes

Fingerprint

Calcium Pyrophosphate
Durapatite
Knee
Polarization Microscopy
Knee Replacement Arthroplasties
Collagenases
Knee Joint
X-Ray Diffraction
Electron Scanning Microscopy
Digestion
X-Rays
dihydrate calcium phosphate
Meniscus

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

Cite this

Simultaneous occurrence of calcium pyrophosphate dihydrate and basic calcium phosphate (hydroxyapatite) crystals in a knee. / Halverson, P. B.; Cheung, Herman S; Johnson, R.; Struve, J.

In: Clinical Orthopaedics and Related Research, No. 257, 01.01.1990, p. 162-165.

Research output: Contribution to journalArticle

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