Table 4.

Cross-sectional Association of Medial/Lateral Posterior Horn Meniscal Damage and Severe Synovitis Posterior to the PCL

Medial Posterior Horn Meniscal Damage (Predictor)		Severe Synovitis Posterior to the PCL (Outcome)		Crude OR OR (95% CI) p-value	Adjusted ORa OR (95% CI) p-value
	Total number of knees	≤ 4 mm (%)	>4 mm (%)
Absence	(N = 253)	188 (74.3)	65 (25.7)	1.0 (reference)	1.0 (reference)
Presence	(N = 123)	82 (66.7)	41 (33.3)	1.4 (0.9,2.3)	1.2 (0.7,2.1)
				0.129	0.552
0	(N = 253)	188 (74.3)	65 (25.7)	1.0 (reference)	1.0 (reference)
1	(N = 18)	10 (94.4)	8 (5.6)	2.3 (0.9,6.1)	2.2 (0.8,6.2)
				0.093	0.130
2	(N = 60)	42 (70.0)	18 (30.0)	1.2 (0.7,2.3)	1.1 (0.6,2.2)
				0.508	0.756
3 and 4	(N = 45)	30 (66.7)	15 (33.3)	1.4 (0.7,2.8)	0.9 (0.4,2.1)
				0.295	0.723
Lateral posterior horn meniscal damage (predictor)
	Total number of knees
Absence	(N = 367)	266 (72.5)	101 (27.5)	1.0 (reference)	1.0 (reference)
Presence	(N = 10)	5 (50.0)	5 (50.0)	2.6 (0.7,9.3)	2.9 (0.8,11.4)
				0.134	0.121
0	(N = 367)	266 (72.5)	101 (27.5)	1.0 (reference)	1.0 (reference)
1	(N = 1)	0 (100)	1 (0.0)	n/a	n/a
				0.988	0.987
2	(N = 7)	4 (57.1)	3 (42.9)	2.0 (0.4,8.9)	2.2 (0.5,11.0)
				0.381	0.324
3 and 4	(N = 2)	1 (50.0)	1 (50.0)	2.6 (0.2,42.3)	1.6 (0.1,48.4)
				0.500	0.786

^aAdjusting for age, sex, BMI, and radiographic OA.