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Journal of Hand Surgery (British and European Volume)
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Articles

Ultrastructure of Solitary Enchondromas

MARILYN L. ZIMNY
I. REDLER

From the Louisiana State University Medical Center, New Orleans, Louisiana

Solitary enchondromas obtained from the small bones of the hand were studied with transmission electron microscopy.

Three cell types were seen as follows: (1) young looking, active cells with extensive dilated rough endoplasmic reticulum and well defined Golgi and mitochondria; (2) older looking, degenerating cells with dilated rough endoplasmic reticulum, well defined Golgi, glycogen masses, vacuoles containing tropocollagen, lipid and myelin figures; and (3) dying cells showing loss of cell membrane and lysosomal-like bodies.

A young chondroblastic cell may try to mature, become a normal chondrocyte that produces normal matrix but it does not succeed and dies.

Enchondromal cells are not capable of forming tropocollagen or synthesizing proteoglycans for the matrix.

Journal of Hand Surgery (British and European Volume), Vol. 9, No. 1, 95-97 (1984)
DOI: 10.1016/0266-7681(84)90027-5
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