Articular synovial microchondromatosis.

Under the general heading of articular osteochondromatosis, there is particular interest in those cases where the synovial change generates small cartilaginous bodies. These exhibit little or no calcification and are found both in the articular cavity and within the synovial tissue. This suggests a pathogenesis in which the disease evolves from a micronodular form into a macronodular chondromatosis of various sizes. These considerations also raise the possibility of regression of the process in its microchondromatosic form towards normalization of the synovial membrane.