Table 2.

Characteristics of TMJs (n = 850)

		No.	%
Disc configuration	Biconcave	257	30.2
Flattened	191	22.5
Convex	89	10.5
Folded	313	36.8
Internal derangement	Normal	245	28.8
DDWR	364	42.8
DDWOR	241	28.4
Condylar morphology	Normal	584	68.7
Flattening	67	7.9
Erosion	28	3.3
Sclerosis	17	2.0
Osteophyte	86	10.1
Combination	68	8.0
Condylar bone marrow signal pattern	Normal	726	85.4
Edema	67	7.9
Sclerosis	12	1.4
Edema with sclerosis	45	5.3
Joint effusion	Grade 0	371	43.6
Grade 1	285	33.5
Grade 2	124	14.6
Grade 3	70	8.2

TMJ, temporomandibular joint.