Interventional study of ultrasound-guided femoral nerve block in adductor canal and comparison with the classical method in relieving pain after elective knee surgery

Aim and This study aimed to determine the efficacy of femoral nerve block in adductor canal and comparison it with the classical method of femoral nerve block in terms of pain relief after elective surgery of the knee. In this study clinical trial study، 92 patients who were candidate for knee arthroscopy in Rasool Akram hospital during 2014- 2015 were evaluated. All patients were blocked after surgery using femoral nerve block or adductor canal block. 1 g Apotel was infused in each group and in the case of no betterment، additional NSAID was administrated. Severity of pain and sedation was measured. Satisfaction level was also evaluated. Data then were entered to SPSS v. 16and were analyzed. We found significant difference between two groups from the point of pain in 3، 6 and 24 hour after the block. The highest VAS score was seen in recovery time in both groups، while pain score was 5 in 50% of patients of each group and 5- 6 in 25- 75% of patients. Sedation was statistically different between the two groups just immediately after the block. Satisfaction in femoral group patients was significantly higher than adductor canal group. Adductor canal group significantly received more additional NSAIDS compared to the femoral group. This study showed that patients with femoral nerve block received lower additive analgesic and had more satisfaction، so this method can be used as an effective treatment for elective surgery knee.