Analgesia, Nerve Block, Total Knee Arthroplasty
Conditions
Keywords
adductor canal block
Brief summary
This study compares the long-axis and short-axis technique of continues adductor canal block for total knee replacement surgery. Half participants will receive long-axis catheterization, while the other half will receive short-axis catheterization.
Interventions
PROCEDUREultrasound guided long axis placement of adductor canal catheter
The long axis of the ultrasound probe is placed parallel to the long axis of the adductor canal while scanning, and the catheter is placed along the long axis of the canal using an in-plane approach
PROCEDUREultrasound guided short axis placement of adductor canal catheter
The long axis of the ultrasound probe is placed vertical to the long axis of the adductor canal while scanning, and the catheter is placed along the short axis of the canal using an in-plane approach
DEVICEPhilip CX 50 Ultrasound Scanner
The linear (C5-12) probe of Philip CX 50 Ultrasound Scanner is used for scanning
DRUGRopivocaine
0.2% ropivacaine 10ml is given as loading dose. Following that, 0.2% ropivacaine 5ml/h is given as maintenance dose.
DRUGrescue sulfentanil given postoperatively as PICA
bolus: 2mg, lock time: 10min, 1h limitation: 8mg
Sponsors
Medical Consulting Center
Cui Xulei
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
TRIPLE (Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| the strength of quadriceps femoris | within 48hours after surgery | strength of quadriceps femoris measured on a Lovett muscle strength rating-scale within 48 hours after surgery |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| ambulation time | within the 7 days after surgery | SAX-group vs. LAX-group |
| quality of recovery | 3days and 7days after surgery | use the self-assessment 11item QoR scale to assess the patient's recovery quality,SAX-group vs. LAX-group |
| complications | within the 7 days after surgery | Record complications including catheter dislodgment, puncture point infection, leakage,falling down,et al. |
| postoperative nausea and vomiting score | 0-2, 2-4, 4-8, 8-24, 24-48 hours postoperative | Rating-scale 0-3 SAX-group vs. LAX-group |
| Pain-score (VAS), patient at rest | 0,2,4,8,24,48 hours postoperative | Pain-score measured on a Visual Analog Scale (VAS) .SAX-group vs. LAX-group |
| Pain-score (VAS), motion pain | 0,2,4,8,24,48 hours postoperative | Pain-score measured on a Visual Analog Scale (VAS) .SAX-group vs. LAX-group |
| sulfentanil consumption | 0,2,4,8,24,48 hours postoperative | record the amount（ml) of sulfentanil used |
| the strength of quadriceps femoris | 0,2,4,8,24,48 hours postoperative | SAX-group vs. LAX-group |
Countries
China
Outcome results
None listed