Classification of temporomandibular joint osteoarthrosis and internal derangement. 2. Specific diagnostic criteria.

Separate entities of temporomandibular joint osteoarthrosis and internal derangement are operationally defined. Criteria are based on an analysis of the diagnostic significance of symptoms and signs, principles of synovial joint pathology in general, and on therapeutic considerations. The primary goal was to enable identification of characteristic stages of osteoarthrosis and internal derangement using diagnostic tools readily available in practice.