Table 3

 Minimum (SD) joint space width (mm) of the compartment adjacent to the narrowed compartment in knees with medial or lateral osteoarthritis

JSN locationNo JSNMedialNo JSNLateral
Compartment JSWLateralLateralMedialMedial
AP, anteroposterior; JSN, joint space narrowing; JSW, joint space width.
Comparison with the minimum JSW of the same compartment in knees with no JSN.
Standing AP Radiograph4.99 (1.27), n = 735.64 (1.47), n = 954.33 (1.00), n = 735.11 (1.14), n = 33
p Value<0.001<0.006
Lyon schuss radiograph5.32 (1.16) n = 385.78 (1.13), n = 963.94 (0.88) n = 385.28 (1.10) n = 64
p Value<0.038<0.001