Randomised Controlled Trial between Ultrasound Guided Femoral Nerve Block and Adductor Canal Block for Postoperative Pain and Functional Outcome in Anterior Cruciate Ligament Reconstruction
Journal Title: Journal of Clinical and Diagnostic Research - Year 2019, Vol 13, Issue 1
Abstract
ABSTRACT Introduction: Femoral Nerve Block (FNB) is used as an adjunct to postoperative analgesia in Anterior Cruciate Ligament (ACL) reconstruction surgeries. However, it causes a reduction in quadriceps strength following use. To mitigate the loss in muscle function and patient safety, surgeons and anaesthesiologists have recently been exploring the potential benefits of a motor sparing Adductor Canal Nerve Blockade (ACB). To date, few comparative studies exist to determine its clinical utility. Aim: To compare the efficacy of femoral nerve block versus ACB for postoperative pain and functional outcome in patients undergoing ACL reconstruction. Materials and Methods: This prospective, randomised controlled trial was done after approval from Institutional Ethics Committee, Kasturba Medical College, Mangalore, Karnataka, India, 76 ASA Class 1 and 2 patients posted for ACL reconstruction, aged 18-60 years were chosen after consent and were randomised into two groups using computer-generated block randomisation. Group F received femoral nerve block and Group A received adductor canal block postoperatively. Visual analogue scale score at 0, 12 and 24 hours and Medical Research Council grading at 2, 12 and 24 hours post-block were measured and compared between both groups. Data analysis was done using student unpaired t-test, student paired t-test and chi-square test. Results: Visual analogue scale scores at 0, 12 and 24 hours postoperative was 2.29, 3.26 and 3.86 in Group A and 2.59, 3.61 and 4.49 in Group F (statistically non significant). Average time for rescue analgesia was 1 hour and 8 hours in Group A and F respectively. Medical research council grading 2, 12 and 24 hours postoperative was 2.6, 4.09 and 4.77 in Group A and 2.8, 3.15 and 4.05 in Group F (statistically significant). Conclusion: Compared with femoral nerve block, the study suggests that adductor canal block preserves quadriceps strength but is equianalgesic for patients undergoing anterior cruciate ligament reconstruction.
Authors and Affiliations
Aghna Faryal Faiaz, Shaila Surendra Kamath
Keywords
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- EP ID EP556312
- DOI 10.7860/JCDR/2019/38453.12478
- Views 88
- Downloads 0
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