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Abstract
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Background and Aims The use of adductor canal block (ACB) for post endoscopic knee surgery (EKS) analgesia is a widely accepted technique. This study was conducted to assess the efficacy of combining ACB with anterior cutaneous femoral nerve block (ACFB) against ACB alone in EKS.
Methods A single blind randomized observational study of 35 patients in each group of ACB only (Gr-A) and ACB with ACFB (Gr-B). Both Gr-A and Gr-B received 25 ml of 0.2% ropivacaine with additional 3-5 ml for intermediate and medial femoral cutaneous nerve block (ACFB) in Gr-B. Both groups received routine paracetamol and rescue analgesia was maintained by PCA morphine. All patients were operated under spinal anesthesia. 24 hours data collected for vitals, duration of analgesia, morphine consumption and complications.
Results Demographically and hemodynamically all the groups were not significantly different, but Gr-B showed lower morphine consumption (5.5 ± 0.4) mg than Gr-A (7.4 ± 0.6) mg (p < 0.05) and longer duration of analgesia (6.7 ± 0.2) hour for Gr-B and (6.1 ± 0.3) for Gr-A, (p < 0.01). No significant complications observed in either group.
Duration of analgesia
Morphine consumption
Conclusions Addition of femoral sensory cutaneous blocks provide better analgesia and duration than adductor canal saphenous block alone in endoscopic knee surgery.