Hypertrophy and laminar calcification of cartilage in loose bodies as probable evidence of an ossification abnormality

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Abstract
Of 83 [human] loose bodies containing hyaline cartilage, 54 were composed of cartilage alone and 29 of cartilage and bone. In both groups, hypertrophy of the cartilage was common, but 53% of the chondral bodies contained a laminar calcification close to the tidemark. The evidence suggested that this feature ante-dated separation of the loose body, and may indicate a metabolic insufficiency because of the increased thickness of the cartilage. The most likely explanation for the hypertrophy was that it was seconary to a local retardation of ossification in the periphery of the epiphysis.

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