[Diagnostic arthroscopy of the Maraca mulatto's TMJ].

To gain further knowledge about features of Maraca mulatto's TMJ,occlusion,and teeth,we underwent examining 4 rhesus monkeys with 8 joints.The same and different features were concluded between Maraca mulatto's anatomical structures and human begins.Afterwards,10 aged rhesus monkeys with 20 joints were examined by TMJ arthroscopy.The results showed that the appearances in 70%(14/20) of the aged were the same as those in human pathologic TMJs. In conclusion,the Maraca mulatto can suffer from the same arthropathy as human being,and it is possible to choose the aged as a natural pathologic model.