About this trial
Hip replacement surgery is one of the most commonly performed surgical procedures in France, with approximately 150,000 procedures per year. Postoperative recovery has significantly improved in recent years, enabling faster rehabilitation.
Although generally considered moderately painful, hip replacement surgery can, in some difficult-to-predict cases, lead to severe postoperative pain, requiring high doses of morphine, which may cause side effects and delay recovery.
In other surgical procedures, regional anesthesia (nerve blocks) has been successfully used for pain relief. However, its effectiveness after hip replacement surgery has not yet been fully proven.
A recent regional anesthesia technique-the Supra-Inguinal Fascia Iliaca Block (SIFIB)-which numbs a significant portion of the nerves around the hip, has recently been developed.
When performed in all patients undergoing hip arthroplasty, the benefit of this technique could not be demonstrated. In addition, this technique may lead to transcient muscle blockade, wich also can delay recovery.
In order to limit the use of nerve blocks to painful patients, we designed this study where the nerve block is performed only in patients experiencing significant paint after surgery.
In conclusion, this study aims to assess the benefits of performing a rescue SIFIB in the recovery room for patients who experience significant postoperative pain after hip replacement surgery. The evaluation will focus on pain relief and ability to walk.
No new treatment is being tested. The technique uses a commonly administered local anesthetic to numb the nerves.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
patient scheduled for a primary total hip arthroplasty under general anesthesia,
written informed consent.
contra indication to ropivacaine
vulnerable person
Disqualifiers
per-operative complication making wheight-bearing and walking contra-indicated.
patient without significant pain post-operatively.
Trial design
Parallel
Treatments tested in this trial
Ultrasound guided supra inguinal fascia iliaca block
Procedure/SurgeryThe ultrasound probe is placed in a cephalo-caudal orientation, over the inguinal ligament, lateral to the femoral nerve. The iliacus muscle, which is covered caudally by the sartorius muscle and cephalically by the internal oblique muscle, is visualized in depth. Between these two muscles, an area is identified where the iliacus muscle is covered only by subcutaneous tissue. The needle is introduced in a cranio-caudal direction, and the injection is initiated in this area, beneath the fascia iliaca. The needle then advances through the space created by the injection, as far as possible in a cephalic direction, beneath the internal oblique muscle. An injection of 40 ml of 0.1% ropivacaine is administered.
Placebo Injection
Procedure/SurgeryFive milliliters of saline are injected subcutaneously under ultrasound guidance
Surgical and anesthetic protocol
Procedure/SurgeryAll patients receive standard general anesthesia: * Induction of anesthesia by sufentanil, ketamine, propofol and tracrium if needed, * Maintenance of anesthesia by sevoflurane and sufentanil if needed, * Prevention of PONV by dexamethasone and droperidol, * Post-operative analgesia by paracetamol, ketoprofene, nefopam, as indicated. Total hip arthroplasty is performed by anterior or postero-lateral approach, depending on surgeon preference. In the post-anesthesia care unit, if numerical pain rating scale at rest is \>=4, patients are randomized to receive experimental or placebo intervention.
Treatment groups
Trial outcomes
Primary outcomes
Composite outcome
Composite outcome is validated if all of these 3 items are validated: * numerical pain rating scale (from 0 to 10) at rest is \< 4, * and intravenous morphine \< 0,1 mg/kg, * and first mobilization successful. First mobilization is validated if patient can stand up, walk 5 meters then sit down in a wheelchair.
Secondary outcomes
Morphine consumption
oral morphine equivalent needings
Pain evaluation
Numerical pain rating scale (0-10=) at rest Numerical rating scale for pain is described as a scale from a minimum of 0, associated with no pain, to a maximum of 10, associated with the worst possible pain.
Length of hospital stay
Number of in-hospital post operative nights
Patient satisfaction
Patient satisfaction assessment on pain management, using a 5-degrees Likert scale. (1 = very dissatisfied, 2 = dissatisfied, 3 = neutral, 4 = satisfied, and 5 = very satisfied)
Sponsors and contacts
Click on the lead sponsor to view all of their trials.