Tow Techniques of Adductor Canal Block for Analgesia After Total Knee Replacement

Peking Union Medical College Hospital62 enrolled

Overview

This study compares the tow technique of continues adductor canal block for total knee replacement surgery. Half participants will receive catheterization at the entrance of the adductor canal, while the other half will receive catheterization at the middle point of the adductor canal.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

SUPPORTIVE_CARE

Masking

TRIPLE

Enrollment

Conditions

Total Knee Arthroplasty Analgesia Nerve Block

Interventions

ultrasound-guided short-axis placement of catheter at the entrance of the adductor canalPROCEDURE

Ultrasound probe is placed at the entrance of the adductor canal in short axis ，insertion of a PAJUNK Contiplex S catheter with the tip of the catheter located at the entrance of the canal

ultrasound-guided long-axis placement of catheter at the middle of the adductor canalPROCEDURE

Ultrasound probe is placed at the middle of the adductor canal in long axis with the caphelad end of the probe aligned with the entrance of the canal. insertion of a PAJUNK Contiplex S catheter with the tip of the catheter located at the middle of the canal

Eligibility

Sex: ALLMin age: 18 YearsMax age: 80 Years

Medical Language ↔ Plain English

Inclusion Criteria: * 18-80 years * Knee-arthroscopy * Written consent * ASA I-III * BMI 19-35 Exclusion Criteria: * Unable to communicate with the investigators (e.g., a language barrier or a neuropsychiatric disorder). * coagulopathy or on anticoagulant medication * Allergic reactions toward drugs used in the trial * History of substance abuse * Infection at injection site * Can not be mobilised to 5 meters of walk pre-surgery

Locations (1)

Peking Union Medical College Hospital

Beijing, China

Outcomes

Primary Outcomes

cumulative sulfentanil consumption at 24 hours after surgery

Time frame: 24 hours after surgery

Secondary Outcomes

the strength of quadriceps femoris

Quadriceps strength was assessed on a 0-5 scale as per the Medical Research Council Scale quadriceps motor strength(0 = no voluntary contraction possible, 1 = muscle flicker, but no movement of limb, 2 = active movement only with gravity eliminated, 3 = movement against gravity but without resistance, 4 = movement possible against some resistance and 5 = normal motor strength against resistance)

Time frame: 0,2,4,8,24,48 hours postoperatively

The pain scores at rest determined by the numeric rating scale (NRS, 0-10)

11-point numerical rating scale (NRS; 0, no pain; 10, maximum pain imaginable).

Time frame: at 0,2,4,8,24,48 hours postoperatively

The pain scores on adduction of the keen determined by the numeric rating scale (NRS, 0-10)

11-point numerical rating scale (NRS; 0, no pain; 10, maximum pain imaginable).

Time frame: at 0,2,4,8,24,48 hours postoperatively

incidence of postoperative nausea and vomiting (PONV)

Time frame: within 48 hours after surgery

Patient satisfaction with anesthesia

Patient satisfaction with anesthesia was assessed using a 5-point scale (5, very satisfied; 4, satisfied; 3, neither satisfied nor dissatisfied; 2, dissatisfied; 1, very dissatisfied)

Time frame: within 5th day after surgery

complications

Record complications including catheter dislodgment, puncture point infection, leakage,falling down,et al.

Data from ClinicalTrials.gov

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