"Comparison of Intra-articular of 0.2% Ropivacaine vs. 0.75% Ropivacaine in Postoperative of Knee Arthroscopy"

NCT ID: NCT05807945

Last Updated: 2024-10-15

Study Results

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

70 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-04-01

Study Completion Date

2023-02-01

Brief Summary

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All patients with acute lesions that attend the orthopedic and trauma center of the ABC medical center are invited to participate in the study. Those that meet the inclusion criteria and later sign an informed consent are randomized to receive 10 ml of a solution with ropivacaine at 0.75% and 0.2% intraarticular for the first 5 minutes after the end of surgery (closing of surgical wounds). Both the patient, the physician who applies it and the evaluator of outcomes remain blinded to the dose of ropivacaine the patient receives.

Two hours after the end of the surgery, while the patient is in his room, the presence of pain is evaluated by a visual analog scale (VAS), while the patient is asked to flex and extend his knee. The result is quantified continuously, to later categorize the pain in none to slight pain (0-3 points) and moderate-severe pain (4-10 points). All the information is recorded on established forms in the clinical file (general data), that includes the variables of interest for the study, and is reported by the physicians after standardization of all those in charge with collecting information to comply with the conceptual and operative operationalization of the variables described in the research protocol. In addition to the evaluation of pain, the administration of opioids to patients for necessary reasons (presence of pain) by the physicians in charge is recorded.

It is hoped that, in patients with knee arthroscopy for acute lesion, there is a difference in the frequency of moderate-severe pain of 30% in the post-operative (frequency of 37.5% in patients with ropivacaine at 0.2% and frequency of 0.75% in patients with ropivacaine at 0.75%).

Detailed Description

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In previous studies the prevalence of moderate-severe intensity pain in patients post knee arthroscopy is 71.2%, and the prevalence of acute pain in post-operative is 37.5%, surpassing the prevalence when compared with other surgical procedures of various specialties.

The administration of opioids is part of common practice in managing pain. However, it represents a risk for patients due to adverse effects and the high risk of dependence. It is necessary to seek alternatives that reduce the consumption of opioids in patients post knee arthroscopy.

Characteristics of the patients reported in other studies, such as sex, body mass index, sedentarism, the cause, duration and use of tourniquet in surgery, in addition to the type of lesion of articular cartilage and the presence of neuropathies, may influence in the presence of pain severity.

Conditions

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Knee Arthroscopy Acute Pain

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

After confirming that the patients meet the selection criteria, they are invited to participate in the study. Upon accepting through signed informed consent, the physician in charge of randomization (physician 1) is informed and the surgery scheduled. The day of the surgery, the physician in charge of randomization reports the maneuver to be received from the anesthesiologist (physician 2) in charge, who prepares the dose of ropivacaine and gives it to a physician blinded to the maneuver (physician 3); this physician applies the ropivacaine intraarticular to the patient. The level of pain is evaluated two hours after the end of surgery by a physician blinded to the maneuver the patient has received (physician 4), while the patient is in his room, and the presence of acute-moderate-severe pain (4-10 points) is evaluated by a visual analog scale (vas) while the patient is requested to flex and extend the knee.
Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors
Masking was performed once the patient agreed to participate; the physician in charge of randomization informs the anesthesiologist of the maneuver that corresponds to the patient programmed for surgery, who prepares the dose for the patient and hands it to the physician who applies the maneuver (who is blinded to the maneuver). All patients receive 10 ml of solution with different doses of ropivacaine, the application vehicles being equal in physical appearance. The physician who evaluate the outcome does not participate in the randomization, surgery or application of the maneuver, and remains blinded to the dose the patient receives, as does the patient.

Study Groups

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Ropivacaine 0.75% Injectable Solution

The patients receive 10 ml of intraarticular solution in the knee (at the anatomical point at the level of the upper pole of the ball joint, under the iliotibial band), with different content of ropivacaine 0.75%; the vehicle for application presents the same physical appearance for all patients and is applied by previously standardized treating physicians.

Group Type EXPERIMENTAL

Ropivacaine 0.75% Injectable Solution

Intervention Type DRUG

The patients receive 10 ml of intraarticular solution in the knee (at the anatomical point at the level of the upper pole of the ball joint, under the iliotibial band), with different content of ropivacaine 0.75%; the vehicle for application presents the same physical appearance for all patients and is applied by previously standardized treating physicians.

Ropivacaine 0.2% Injectable Solution

The patients receive 10 ml of intraarticular solution in the knee (at the anatomical point at the level of the upper pole of the ball joint, under the iliotibial band), with different content of ropivacaine 0.2%; the vehicle for application presents the same physical appearance for all patients and is applied by previously standardized treating physicians.

Group Type ACTIVE_COMPARATOR

Ropivacaine 0.2% Injectable Solution

Intervention Type DRUG

The patients receive 10 ml of intraarticular solution in the knee (at the anatomical point at the level of the upper pole of the ball joint, under the iliotibial band), with different content of ropivacaine 0.2%; the vehicle for application presents the same physical appearance for all patients and is applied by previously standardized treating physicians.

Interventions

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Ropivacaine 0.75% Injectable Solution

The patients receive 10 ml of intraarticular solution in the knee (at the anatomical point at the level of the upper pole of the ball joint, under the iliotibial band), with different content of ropivacaine 0.75%; the vehicle for application presents the same physical appearance for all patients and is applied by previously standardized treating physicians.

Intervention Type DRUG

Ropivacaine 0.2% Injectable Solution

The patients receive 10 ml of intraarticular solution in the knee (at the anatomical point at the level of the upper pole of the ball joint, under the iliotibial band), with different content of ropivacaine 0.2%; the vehicle for application presents the same physical appearance for all patients and is applied by previously standardized treating physicians.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Mental health: healthy (not taking any medication)
* Articular cartilage lesion Grade I, II or III by Outerbridge
* Elective knee surgery
* Patients with any of the following diagnoses:
* Simple meniscal lesion
* Lesion of a single knee (unilateral)

Exclusion Criteria

* Neuromotor diseases (alterations in step, strength or sensitivity)
* History of knee surgery (orthopedic)
* Instability that includes knee ligament lesions
* Addictions
* Mental diseases in medical treatment
* Hepatic diseases
* Allergy to any of the medications used in the study
* Epidural or peridural anesthesia
* Chronic pain in treatment
* Postoperative drain of knee arthroscopy
* Pregnant or lactating
Minimum Eligible Age

18 Years

Maximum Eligible Age

50 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Paola M Zamora Munoz

OTHER

Sponsor Role lead

Responsible Party

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Paola M Zamora Munoz

Principal Investigator

Responsibility Role SPONSOR_INVESTIGATOR

Locations

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American British Cowdray Medical Center

Mexico City, Cuajimalpa, Mexico

Site Status

Countries

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Mexico

References

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Provided Documents

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Document Type: Study Protocol and Statistical Analysis Plan

View Document

Other Identifiers

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001230620

Identifier Type: -

Identifier Source: org_study_id

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