The Combination of the Tunnel View and Weight-Bearing Anteroposterior Radiographs Improves the Detection of Knee Arthritis

Table 1

The degenerative changes visualized in 100 knees.

Degenerative change	Compartment	AP	AP + tunnel	value
Joint space narrowing	Lateral	25	36	<0.001
	Medial	60	67	0.006
Tibial sclerosis	Lateral	5	9	0.041
	Medial	16	19	0.079
Femoral sclerosis	Lateral	1	3	0.153
	Medial	8	8	1.000
Subchondral cysts	Lateral	3	4	0.315
	Medial	6	11	0.022
Loose bodies	Lateral	0	0	1.000
	Medial	2	4	0.153
Subchondral tibial defect	Lateral	1	1	1.000
	Medial	2	3	0.315
Subchondral femoral defect	Lateral	0	0	1.000
	Medial	1	1	1.000
Osteophytes	Lateral	15	17	0.153
	Medial	15	21	0.012
	Intercond. notch	0	29	<0.001
	Tibial spine	0	13	<0.001

Significant value.