Table 1: Wilkes classification [7,9].
Stage |
Clinical Findings |
Radiographic Findings |
I |
No limitation of opening Painless clicking |
Normal disc morphology Mild displacement with early reduction |
II |
Occasional painful click Intermittent lock |
Mild disc deformity Moderate displacement with late reduction |
III |
Limited opening Frequent painful clicking Joint tenderness |
Displaced, nonreducing disc |
IV |
Limited opening Chronic pain |
Severe displacement without reduction Degenerative bony changes |
V |
Variable joint pain Joint crepitus |
Nonreducing disc with perforation Degenerative bony changes |