FEM (n=40) FIC (n=40) p - values
Onset time of sensory block  
Anterior cranial (minutes) 3 (3) 5 (5) 0.04*
Anterior knee (minutes) 4 (3) 7 (6) 0.002*
Lateral cranial (minutes) 6 (4) 6 (6) 0.99
Lateral knee (minutes) 5 (4) 7 (6) 0.20
Onset time of motor block  
Knee extension (minutes) 6 (6) 9 (6) 0.0002*
Thigh adduction (minutes) 7 (7) 10 (7) 0.08
Table 3: Onset time of complete sensory and motor blockade after bolus injection of 50 ml prilocaine 1% Values are expressed as mean (standard deviation). *Statistically significant (<0.05).