Table 4.

Comparison of severity of focal knee lesions (WORMS Max) in knee pairs of subjects with no, right, and bilateral knee pain. Frequencies of subjects with higher, lower, and equal severity of focal knee lesions in the right compared to the left knee are given in absolute numbers and on percentage basis. Severity of bilaterally prevalent focal knee lesions are compared by using Wilcoxon signed-rank tests and displayed as mean ± SD (p-value). P-values indicating statistical significance (p<0.05) are printed in bold.

	Subjects with right knee pain (n=30)	Subjects without knee pain (n=60)	Subjects with bilateral knee pain (n=30)
Meniscus bilateral WORMS Max >0:	18	34	12
right WORMS Max > left WORMS Max	5 (27.8%)	10 (29.4%)	2 (16.7%)
right WORMS Max < left WORMS Max	1 (5.6%)	8 (23.5%)	3 (25.0%)
right WORMS Max = left WORMS Max	12 (66.6%)	16 (47.1%)	7 (58.3%)
mean ± SD right vs. left WORMS Max	2.2±1.3 vs. 1.9±1.3 (p=0.290)	2.0±1.0 vs. 1.8±1.0 (p=0.474)	2.1±1.3 vs. 1.9±1.0 (p=0.680)
Cartilage bilateral WORMS Max >0:	26	39	24
right WORMS Max > left WORMS Max	12 (46.2%)	14 (35.9%)	5 (20.8%)
right WORMS Max < left WORMS Max	3 (11.5%)	7 (17.9%)	4 (16.7%)
right WORMS Max = left WORMS Max	11 (42.3%)	18 (46.2%)	15 (62.5%)
mean ± SD right vs. left WORMS Max	2.7±1.2 vs. 2.2±1.2 (p=0.057)	2.7±1.3 vs. 2.3±1.0 (p=0.041)	2.5±1.2 vs. 2.5±0.9 (p=0.857)
BMEP bilateral WORMS Max >0:	11	17	11
right WORMS Max > left WORMS Max	1 (9.1%)	3 (17.6%)	5 (45.5%)
right WORMS Max < left WORMS Max	2 (18.2%)	3 (17.6%)	1 (9.0%)
right WORMS Max = left WORMS Max	8 (72.7%)	11 (64.8%)	5 (45.5%)
mean ± SD right vs. left WORMS Max	1.8±0.8 vs. 1.9±0.5 (p=0.564)	1.9±0.5 vs. 1.9±0.5 (p=1.000)	2.3±0.5 vs. 1.8±0.6 (p=0.096)