Development of Synovial Membrane in the Temporomandibular Joint of the Human Fetus
نویسندگان
چکیده
The development of the synovial membrane was analyzed in serial sections of 21 temporomandibular joints of human fetuses at 9 to 13 weeks of gestation. Sections of two fetuses at 12 weeks of development were used to perform immunohistochemical expression of the markers CD68 and Hsp27 on the synovial lining. Macrophage-like type A and fibroblast-like type B cells, which express CD68 and Hsp27, respectively, were observed at the twelfth week of development. Our results suggest that the development of the synovial membrane is related to the vascularization of the joint and the formation of the articular cavities.
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Synovial chondromatosis is a rare neoplastic condition which usually involves major joints. This tumor is a cartilaginous metaplasia which occurs within synovial membrane of joint or tendon sheets. Multiple cartilaginous nodules can become free from synovial membrane and float in the joint space. X-Ray almost always shows multiple calcified areas so evidently that usually diagnosis ...
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