Adductor canal catheters are being used to provide continuous postoperative analgesia after total knee arthroplasty surgery (TKA). There is much debate about where is the best position of continuous adductor canal block in patients undergoing TKA. Therefore, the investigators aim to compare the postoperative pain at three different level of continuous adductor canal block. Ninety six patients scheduled for total knee arthroplasty will be randomly divided into the three groups. In group 1, the adductor canal catheter is inserted at femoral triangle apex (the proximal end of the adductor canal). In group 2, the adductor canal catheter is inserted femur length/15\*2 cm above the location where the nerve block performed in group 1. In group 3, the adductor canal catheter is inserted femur length/15cm below the location where the nerve block performed in group 1.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
96
In group 1, the adductor canal catheter is inserted at femoral triangle apex (the proximal end of the adductor canal).
In group 2, the adductor canal catheter is inserted femur length/15\*2 cm above the location where the nerve block performed in group 1.
In group 3, the adductor canal catheter is inserted femur length/15 cm below the location where the nerve block performed in group 1.
Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institue, Yonsei Universiy College of Medicine
Seoul, South Korea
Pain : Visual Analogue Scale (VAS) for pain
The visual analog scale(VAS) is a validated, subjective measure for acute and chronic pain. Scores are recorded by making a handwritten mark on a 10-cm line that represents a continuum between "no pain" (0) and "worst pain." (10). The ends are defined as the extreme limits of the parameter to be measured(symptom,pain,health) orientated from the left(0, worst) to the right(10, best).
Time frame: Baseline (Before surgery)
Pain : Visual Analogue Scale (VAS) for pain
The visual analog scale(VAS) is a validated, subjective measure for acute and chronic pain. Scores are recorded by making a handwritten mark on a 10-cm line that represents a continuum between "no pain" (0) and "worst pain." (10). The ends are defined as the extreme limits of the parameter to be measured(symptom,pain,health) orientated from the left(0, worst) to the right(10, best).
Time frame: postoperative day 1
Pain : Visual Analogue Scale (VAS) for pain
The visual analog scale(VAS) is a validated, subjective measure for acute and chronic pain. Scores are recorded by making a handwritten mark on a 10-cm line that represents a continuum between "no pain" (0) and "worst pain." (10). The ends are defined as the extreme limits of the parameter to be measured(symptom,pain,health) orientated from the left(0, worst) to the right(10, best).
Time frame: postoperative day 2
muscle strength
Quadriceps strength of both legs was assessed by placing the dynamometer on the anterior of the ankle, between the malleoli.
Time frame: Baseline (Before surgery)
muscle strength
Quadriceps strength of both legs was assessed by placing the dynamometer on the anterior of the ankle, between the malleoli.
Time frame: postoperative day 1
muscle strength
Quadriceps strength of both legs was assessed by placing the dynamometer on the anterior of the ankle, between the malleoli.
Time frame: postoperative day 2
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