PubMed Central, : RMMJ Rambam Maimonides Medical Journal Rambam Health Care Campus 2017 January; 8(1): e0006. ISSN: 2076-9172Published online 2017 January 30. doi: 10.5041/RMMJ.10281.

	FNBG (n=30)	MNBG (n=31)	Control (n=29)	P Value
Age (years) ^*	69±1.24	69±1.56	67±1.22	0.58
Gender (M:F) ^†	9:21	12:19	11:18	0.74
Height (m) ^‡	1.61±0.02	1.63±0.01	1.63±0.02	0.78
BW (kg) ^‡	85.98±2.88	81.55±2.70	92.97±2.80	0.01
BMI (kg/m²) ^‡	33.06±0.94	30.6±1.06	35.15±1.12	0.01
Pain VAS rest (mm) ^‡,^**	10.85±2.91	10.59±3.01	17.63±4.46	0.85
Flexion (centigrade) ^*,^§	104.37±4.54	109.94±5.31	110.24±4.67	0.63
Pain VAS flexion (mm) ^‡,^§,^**	41.54±4.95	35.71±5.24	46.82±6.76	0.45
Extension (centigrade) ^‡,^§	179.33±0.40	176.55±1.95	178.45±0.79	0.72
Pain VAS extension (mm) ^‡,^§,^**	21.15±4.22	25.61±4.61	32.98±6.79	0.58
Walking without pain (m) ^‡	188.17±35.97	350.45±69.81	246.38±73.18	0.25

All values are presented as mean ±SE.

^*Age and flexion were of normal distribution (Shapiro–Wilk test) and homogeneous of variances (Levene test). These variables were analyzed using ANOVA test for comparison of means between three groups.

^†Pearson chi-square test for proportions between categorical variables.

^‡All variables were of abnormal distribution. Therefore, the Kruskal–Wallis test was used for comparison of continuous variables between three independent groups. The Mann–Whitney post-hoc test was used following the Kruskal–Wallis test, if necessary.

^§Flexion or extension: maximal possible range of motion during flexion and extension were measured by goniometer in centigrade.

^**Pain VAS rest (mm), Pain VAS flexion, Pain VAS extension: pain intensity at rest, during flexion, or during extension were measured by VAS in mm.

BMI (kg/m²), body mass index; BW (kg), body weight in kilograms; FNBG, femoral nerve block group; MNBG, multiple nerve block group; VAS, visual analogue scale.