The PENG Block in Elective Hip Surgery and Its Effect on Postoperative Pain and Length of Stay.

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

151 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-06-01

Study Completion Date

2023-11-30

Brief Summary

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Effective postoperative pain management in elective hip surgery is crucial for the patients well-being, rapid mobilisation and potential reduction of length of stay. In addition to standard intravenous pain medication, anaesthetic blocks are reportedly effective. Recently, the PENG block, a pericapsular pain block without impairment of the motor function has been introduced in literature and performed at the investigator's hospital (HFR Fribourg, Switzerland) for total hip arthroplasty and surgical hip dislocation - the two most commonly performed elective hip surgeries.

As high-quality evidence on the effectiveness of this novel block is lacking, the investigator's objective is to evaluate the effectiveness of (1) patient-reported pain reduction, (2) total consumption of postoperative morphine, and the length of stay at the hospital.

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Detailed Description

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Forty patients undergoing total hip arthroplasty and 40 patients undergoing surgical hip dislocation will be enrolled in a prospective, double-blind, controlled trial performed at the investigator's hospital.

This study will be the first prospective study evaluating the potential of this pain block in elective hip surgery potentially affecting both patients' postoperative well-being and optimizing costs of the hospital by reducing length of stay.

Conditions

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Pain, Postoperative

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Interdisciplinary, prospective, double-blind (participant and investigator), placebo-controlled, parallel-group study (experimental study, level of evidence I).

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Investigators

Study Groups

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PENG block for anterior total hip arthroplasty or surgical hip dislocation

All patients will undergo the same preoperative, standardized protocol. Upon arrival to the operating theatre, routine, standard pre-medication will be applied before induction of general anesthesia. After intubation, the PENG block is performed. Under sonographic guidance, 20 mL of 0.5% ropivacaine iv is injected.

Group Type EXPERIMENTAL

PENG block

Intervention Type PROCEDURE

All patients will undergo the same preoperative, standardized protocol. Upon arrival to the operating room, patients will be placed in supine position. Routine, standard pre-medication will be applied before induction of general anesthesia. After intubation, the PENG block is performed. Under sonographic guidance using a curvilinear probe, puncture will be performed in a lateromedial direction until the needle tip reaches the plane between the iliopsoas tendon and periosteum and between the anterior inferior iliac spine and iliopubic eminence. After a negative aspiration test, the blinded test item will be injected in the plane beneath the iliopsoas muscle. Patients will be randomly assigned to receive the test item (20 mL of ropivacaine 0.5%, Naropin). The anesthesiologist and the surgeon are blinded to the product injected.

Placebo for anterior total hip arthroplasty or surgical hip dislocation

All patients will undergo the same preoperative, standardized protocol. Upon arrival to the operating theatre, routine, standard pre-medication will be applied before induction of general anesthesia. After intubation, the PENG block is performed. Under sonographic guidance, 20 mL of NaCL 0.9% is injected.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type PROCEDURE

ll patients will undergo the same preoperative, standardized protocol. Upon arrival to the operating room, patients will be placed in supine position. Routine, standard pre-medication will be applied before induction of general anesthesia. After intubation, the PENG block is performed. Under sonographic guidance using a curvilinear probe, puncture will be performed in a lateromedial direction until the needle tip reaches the plane between the iliopsoas tendon and periosteum and between the anterior inferior iliac spine and iliopubic eminence. After a negative aspiration test, the blinded test item will be injected in the plane beneath the iliopsoas muscle. Patients will be randomly assigned to receive the placebo (20 mL of NaCL 0.9%). The anesthesiologist and the surgeon are blinded to the product injected.

Interventions

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PENG block

All patients will undergo the same preoperative, standardized protocol. Upon arrival to the operating room, patients will be placed in supine position. Routine, standard pre-medication will be applied before induction of general anesthesia. After intubation, the PENG block is performed. Under sonographic guidance using a curvilinear probe, puncture will be performed in a lateromedial direction until the needle tip reaches the plane between the iliopsoas tendon and periosteum and between the anterior inferior iliac spine and iliopubic eminence. After a negative aspiration test, the blinded test item will be injected in the plane beneath the iliopsoas muscle. Patients will be randomly assigned to receive the test item (20 mL of ropivacaine 0.5%, Naropin). The anesthesiologist and the surgeon are blinded to the product injected.

Intervention Type PROCEDURE

Placebo

ll patients will undergo the same preoperative, standardized protocol. Upon arrival to the operating room, patients will be placed in supine position. Routine, standard pre-medication will be applied before induction of general anesthesia. After intubation, the PENG block is performed. Under sonographic guidance using a curvilinear probe, puncture will be performed in a lateromedial direction until the needle tip reaches the plane between the iliopsoas tendon and periosteum and between the anterior inferior iliac spine and iliopubic eminence. After a negative aspiration test, the blinded test item will be injected in the plane beneath the iliopsoas muscle. Patients will be randomly assigned to receive the placebo (20 mL of NaCL 0.9%). The anesthesiologist and the surgeon are blinded to the product injected.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Anterior total hip arthroplasty for hip osteoarthritis
* Surgical hip dislocation for femoro-acetabular impingement (type cam-/pincer)
* Age 16-85 years
* American Society of Anesthesiologists (ASA) physical status 1 to 3

Exclusion Criteria

* Patient refusal/no informed consent
* Inability to give informed consent
* Lateral approach for total hip arthroplasty
* Bilateral procedure
* Additional osteotomies of the femur and/or acetabulum
* Previous hip \& pelvis surgery
* Chronic opioid users
* Known allergy or intolerance to medications used in the trial (local anesthetic, opioid)
* Infection at the injection site
* Body mass index \> 40kg/m2
* Spinal anesthesia

Minimum Eligible Age

18 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No