According to SAWHNEY’S classification of TMJ ankylosis, complete joint architecture is destroyed by osseous union and no sigmoid notch is identifiable, this is:
Correct Answer: Type 4
Description: SAWHNEY'S GRADING OF ANKYLOSIS
TYPE 1: Flattening or deformity of the condyle with little joint space seen on the radiograph. Extensive fibrous adhesions seen during operations.
TYPE 2: Bony fusion of the outer edges of the articular surfaces with no fusion in the deeper areas of the joint.
TYPE 3: A bridge of bone is seen between ramus of the mandible and zygomatic arch.
TYPE 4: Entire joint is replaced by a mass of bone.
Category:
Surgery
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