Novel lumbar plexus block versus femoral nerve block for analgesia and motor recovery after total knee arthroplasty

Author:

Gong Wen-Yi1,Zou Feng2,Yue Xiao-Fang3,Li Chen-Guang4,Zhang Jing-Yu5,Fan Kun2

Affiliation:

1. Department of Anesthesiology, Zhongshan Wusong Hospital Affiliated to Fudan University , Shanghai , China

2. Department of Anesthesiology, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiaotong University School of Medicine , Shanghai , 200233 , China

3. Department of Neurology, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiaotong University School of Medicine , Shanghai , China

4. Department of Anesthesiology, Tianshui First People’s Hospital , Tianshui , Gansu , China

5. Department of Anesthesiology, The Second Hospital, Lanzhou University , Lanzhou , Gansu , China

Abstract

Abstract This study aimed to compare the postoperative analgesic efficacy and motor recovery of a novel lumbar plexus block (LPB) with that of a femoral nerve block (FNB) after total knee arthroplasty (TKA). Forty patients who underwent TKA were randomised equally into an lumbar plexus and sciatic nerve (LS) group (receiving novel LPB) and an femoral and sciatic nerves (FS) group (receiving FNB). The assessed variables were the onset time of pain, time to the first analgesic request, pain scores, motor block at 6, 12, and 24 h after TKA, and the number of patients receiving successful blockade for each branch of the lumbar plexus. In the LS group, the femoral, lateral femoral cutaneous, genitofemoral, iliohypogastric, ilioinguinal, and obturator nerves were blocked in 18, 20, 16, 18, 15, and 19 patients. Compared to the FS group, the LS group had a significantly shorter onset time of pain and time to the first analgesic request, a significantly larger total postoperative dose of sufentanil, significantly higher numeric rating scale scores for both rest and dynamic pain at 6, 12, and 24 h, and faster motor recovery. Novel ultrasound-guided LPB has a high blocking success rate and provides inferior postoperative analgesia, but faster motor recovery after TKA than FNB.

Publisher

Walter de Gruyter GmbH

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