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Randomized Controlled Trial
. 2015 Jun 26:21:1843-9.
doi: 10.12659/MSM.893617.

Effects of Postoperative Continuous Femoral Nerve Block Analgesia with Braun Continuous Peripheral Nerve Block Catheter Set versus Novel Needle-Over-Cannula after Total Knee Arthroplasty

Bin Yu  1 , Xiaoxue Hu  2 , Tianxiao Zou  1 , Miao He  1 , Guangyu Cai  1
Affiliations
Randomized Controlled Trial

Effects of Postoperative Continuous Femoral Nerve Block Analgesia with Braun Continuous Peripheral Nerve Block Catheter Set versus Novel Needle-Over-Cannula after Total Knee Arthroplasty

Bin Yu et al. Med Sci Monit. .

Abstract

Background: The aim of this study was to compare the novel needle-over-cannula vs. the Braun continuous peripheral nerve block catheter set (Contiplex A) in postoperative analgesics after total knee arthroplasty (TKA).

Material and methods: Sixty patients undergoing total knee arthroplasty were randomly assigned to Braun continuous peripheral nerve block catheter set group (Braun Group, n=30) or the novel needle-over-cannula group (Cannula Group, n=30). All the patients in the 2 groups received continuous femoral nerve block (CFNB) for postoperative analgesics.

Results: We found no significant difference in analgesic effect between the 2 groups. The time of catheter or cannula insertion was shorter in the Cannula Group than in the Braun Group. Four (13.32%) out of 30 patients had failed catheter insertions in the Braun Group compared to none in the Cannula Group. Twelve (46%) out of 26 patients in the Braun Group had serious local anesthetic leakage at puncture sites during 12 h compared to none in the Cannula Group.

Conclusions: The novel needle-over-cannula is effective, convenient, and safe in CFNB after TKA.

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Figures

Figure 1
Figure 1
(A) A schematic of the novel needle-over-cannula; (B) The novel needle-over-cannula (22-gauge needle, 90-mm-length external indwelling cannula; Tuoren Group, Xinxiang, China) invented by Dr. Bin Yu, who is also the first author of the article.
Figure 2
Figure 2
The novel needle-over-cannula was inserted out-plane at an angle of about 30° to skin, vertical to arcus cruralis, parallel to femoral nerve.
Figure 3
Figure 3
Ultrasound of the perineural fluid space with injection of 20 ml 0.5% ropivacaine after the needle breaking through fascia iliaca and fascia lata.
Figure 4
Figure 4
After the needle was pulled out and the cannula was fixed to the skin with no-pressure medical tape.
Figure 5
Figure 5
Ultrasound image of the cannula after procedures.
See this image and copyright information in PMC

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