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Pre vs Post Block in Total Knee Arthroplasty (TKA)

Pre vs. Postoperative Adductor Canal Block for Total Knee Arthroplasty: Prospective Randomized Trial

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05974501
Enrollment
84
Registered
2023-08-03
Start date
2023-09-29
Completion date
2024-01-22
Last updated
2025-02-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Knee Osteoarthritis, Arthroplasty Complications, Postoperative Pain

Brief summary

The purpose of this project is to determine if a change in patient reported pain, nausea and vomiting after total knee arthroplasty can be observed with the substitution of a post operative adductor canal block for a preoperative adductor canal block in the current established peri-operative pain protocol and if these changes lead to a decrease in opioid consumption (in morphine equivalents).

Interventions

DRUGDexamethasone

Dexamethasone 10mg administered via IV once postoperatively within 24 hours for pain and swelling

DRUGAcetaminophen

1,000mg administered via tablet every 8 hours for pain during the first 1-2 weeks postoperatively

DRUGLyrica

Administered via tablet 75mg nightly for pain during the first 1-2 weeks postoperatively

DRUGCelebrex

200mg administered via tablet twice a day for pain and swelling during the first 1-2 weeks postoperatively

DRUGMeloxicam

30mg administered via IV once postoperatively within 24 hours for pain and swelling

DRUGOxycodone

5mg administered via tablet every 4 hours as needed for pain during the first 1-2 weeks postoperatively

DRUGRopivacaine

20 milliliters Ropivacaine 0.2% administered via injection perioperatively.

Sponsors

University of Miami
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1- Patients 18 or older 2 - Patients undergoing primary total knee replacement at the University of Miami Hospital 3 - Patients that have capacity to provide medical consent

Exclusion criteria

1. All patients under the age of 18 2. Prisoners, uncontrolled diabetics, increased risk of bleeding, pregnant women, women planning on becoming pregnant in the next year, and women who think they might be pregnant. 3. Patients with prior surgery or history of infection on the joint of interest. 4. Patients on steroid preoperatively. 5. Inability to provide medical consent. 6. Patients with a history of significant unmitigated pain in parts of their body not including the knee the procedure is to be performed or a history of pain catastrophizing (the tendency to magnify the threat value of the pain stimulus and to feel helpless in the context of pain, and by a relative inability to inhibit pain-related thoughts in anticipation of, during or following a painful event) regarding pain anywhere in the body. 7. Any condition that, in the opinion of the investigator, would compromise the well-being of the patient or the study or prevent the patient from meeting or performing study requirements will exclude the participant. 8. Allergy to local anesthetic or any medication used in the standard protocol for joint replacement.

Design outcomes

Primary

MeasureTime frameDescription
Pain Status as Measured by Numeric Pain Scale2 hours postoperativelyScale with numeric scores ranging from 0 (least) to 10 (most) pain

Secondary

MeasureTime frameDescription
Episodes of Nausea2 hours postoperativelyCount of the number of episodes of nausea per patient
Patients Reporting Vomiting2 hours postoperativelyCount of the number of patients reporting vomiting
Episodes of Vomiting2 hours postoperativelyCount of the number of episodes of vomiting per patient
Total Opioid Consumption2 hours postoperativelyMeasure of the amount of morphine milliequivalents consumed by the patient
Patients Reporting Nausea2 hours postoperativelyCount of the number of patients reporting nausea
Hours HospitalizedUp to 336 hours postoperativelyNumber of hours hospitalized
Discharges by Midnight POD0Up to 24 hours postoperativelyThe number of patients discharged home by midnight on postoperative day zero
Discharges by Midnight on POD1Up to 48 hours postoperativelyThe number of patients discharged home by midnight postoperative day one
Nights HospitalizedUp to 14 nights postoperativelyNumber of nights hospitalized

Countries

United States

Participant flow

Participants by arm

ArmCount
Preoperative Adductor Canal Block Group
Participants in this group will receive the standard of care treatment for pain management for TKA including a preoperative adductor canal block. Participants will be in this group for up to 24 hours after surgery. Dexamethasone: Dexamethasone 10mg administered via IV once postoperatively within 24 hours for pain and swelling Acetaminophen: 1,000mg administered via tablet every 8 hours for pain during the first 1-2 weeks postoperatively Lyrica: Administered via tablet 75mg nightly for pain during the first 1-2 weeks postoperatively Celebrex: 200mg administered via tablet twice a day for pain and swelling during the first 1-2 weeks postoperatively Meloxicam: 30mg administered via IV once postoperatively within 24 hours for pain and swelling Oxycodone: 5mg administered via tablet every 4 hours as needed for pain during the first 1-2 weeks postoperatively Ropivacaine: 20 milliliters Ropivacaine 0.2% administered via injection perioperatively.
46
Postoperative Adductor Canal Block Group
Participants in this group will receive the standard of care treatment for pain management after TKA, however, the adductor canal block will be placed postoperatively. Participants will be in this group for up to 24 hours Dexamethasone: Dexamethasone 10mg administered via IV once postoperatively within 24 hours for pain and swelling Acetaminophen: 1,000mg administered via tablet every 8 hours for pain during the first 1-2 weeks postoperatively Lyrica: Administered via tablet 75mg nightly for pain during the first 1-2 weeks postoperatively Celebrex: 200mg administered via tablet twice a day for pain and swelling during the first 1-2 weeks postoperatively Meloxicam: 30mg administered via IV once postoperatively within 24 hours for pain and swelling Oxycodone: 5mg administered via tablet every 4 hours as needed for pain during the first 1-2 weeks postoperatively Ropivacaine: 20 milliliters Ropivacaine 0.2% administered via injection perioperatively.
38
Total84

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyPhysician Decision01

Baseline characteristics

CharacteristicPreoperative Adductor Canal Block GroupPostoperative Adductor Canal Block GroupTotal
Age, Continuous65 years
STANDARD_DEVIATION 9.12
65 years
STANDARD_DEVIATION 9.75
65 years
STANDARD_DEVIATION 9.38
Body Mass Index (BMI)30.50 kg/m^2
STANDARD_DEVIATION 4.73
30.90 kg/m^2
STANDARD_DEVIATION 4.18
30.80 kg/m^2
STANDARD_DEVIATION 4.51
Race and Ethnicity Not Collected0 Participants
Sex: Female, Male
Female
31 Participants26 Participants57 Participants
Sex: Female, Male
Male
15 Participants12 Participants27 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 460 / 38
other
Total, other adverse events
0 / 460 / 38
serious
Total, serious adverse events
0 / 460 / 38

Outcome results

Primary

Pain Status as Measured by Numeric Pain Scale

Scale with numeric scores ranging from 0 (least) to 10 (most) pain

Time frame: 2 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (MEDIAN)
Preoperative Adductor Canal Block GroupPain Status as Measured by Numeric Pain Scale2 score on a scale
Postoperative Adductor Canal Block GroupPain Status as Measured by Numeric Pain Scale4.00 score on a scale
Primary

Pain Status as Measured by Numeric Pain Scale

Scale with numeric scores ranging from 0 (least) to 10 (most) pain

Time frame: 24 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (MEDIAN)
Preoperative Adductor Canal Block GroupPain Status as Measured by Numeric Pain Scale6.00 score on a scale
Postoperative Adductor Canal Block GroupPain Status as Measured by Numeric Pain Scale6.00 score on a scale
Secondary

Discharges by Midnight on POD1

The number of patients discharged home by midnight postoperative day one

Time frame: Up to 48 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Preoperative Adductor Canal Block GroupDischarges by Midnight on POD140 Participants
Postoperative Adductor Canal Block GroupDischarges by Midnight on POD129 Participants
Secondary

Discharges by Midnight POD0

The number of patients discharged home by midnight on postoperative day zero

Time frame: Up to 24 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Preoperative Adductor Canal Block GroupDischarges by Midnight POD03 Participants
Postoperative Adductor Canal Block GroupDischarges by Midnight POD04 Participants
Secondary

Episodes of Nausea

Count of the number of episodes of nausea per patient

Time frame: 2 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (MEDIAN)
Preoperative Adductor Canal Block GroupEpisodes of Nausea0.00 number of episodes per patient
Postoperative Adductor Canal Block GroupEpisodes of Nausea0.00 number of episodes per patient
Secondary

Episodes of Nausea

Count of the number of episodes of nausea per patient

Time frame: 24 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (MEDIAN)
Preoperative Adductor Canal Block GroupEpisodes of Nausea0.00 number of episodes per patient
Postoperative Adductor Canal Block GroupEpisodes of Nausea0.00 number of episodes per patient
Secondary

Episodes of Vomiting

Count of the number of episodes of vomiting per patient

Time frame: 24 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (MEDIAN)
Preoperative Adductor Canal Block GroupEpisodes of Vomiting0.00 number of episodes per patient
Postoperative Adductor Canal Block GroupEpisodes of Vomiting0.00 number of episodes per patient
Secondary

Episodes of Vomiting

Count of the number of episodes of vomiting per patient

Time frame: 2 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (MEDIAN)
Preoperative Adductor Canal Block GroupEpisodes of Vomiting0.00 number of episodes per patient
Postoperative Adductor Canal Block GroupEpisodes of Vomiting0.00 number of episodes per patient
Secondary

Hours Hospitalized

Number of hours hospitalized

Time frame: Up to 336 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (MEDIAN)
Preoperative Adductor Canal Block GroupHours Hospitalized23.66 hours
Postoperative Adductor Canal Block GroupHours Hospitalized25.92 hours
Secondary

Nights Hospitalized

Number of nights hospitalized

Time frame: Up to 14 nights postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (MEDIAN)
Preoperative Adductor Canal Block GroupNights Hospitalized1.00 nights
Postoperative Adductor Canal Block GroupNights Hospitalized1.00 nights
Secondary

Patients Reporting Nausea

Count of the number of patients reporting nausea

Time frame: 2 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Preoperative Adductor Canal Block GroupPatients Reporting Nausea7 Participants
Postoperative Adductor Canal Block GroupPatients Reporting Nausea4 Participants
Secondary

Patients Reporting Nausea

Count of the number of patients reporting nausea

Time frame: 24 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Preoperative Adductor Canal Block GroupPatients Reporting Nausea8 Participants
Postoperative Adductor Canal Block GroupPatients Reporting Nausea5 Participants
Secondary

Patients Reporting Vomiting

Count of the number of patients reporting vomiting

Time frame: 2 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Preoperative Adductor Canal Block GroupPatients Reporting Vomiting1 Participants
Postoperative Adductor Canal Block GroupPatients Reporting Vomiting1 Participants
Secondary

Patients Reporting Vomiting

Count of the number of patients reporting vomiting

Time frame: 24 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Preoperative Adductor Canal Block GroupPatients Reporting Vomiting3 Participants
Postoperative Adductor Canal Block GroupPatients Reporting Vomiting2 Participants
Secondary

Total Opioid Consumption

Measure of the amount of morphine milliequivalents consumed by the patient

Time frame: 2 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (MEDIAN)
Preoperative Adductor Canal Block GroupTotal Opioid Consumption19.50 milligram morphine equivalents
Postoperative Adductor Canal Block GroupTotal Opioid Consumption30.00 milligram morphine equivalents
Secondary

Total Opioid Consumption

Measure of the amount of morphine milliequivalents consumed by the patient

Time frame: 24 hours postoperatively

Population: Patients who completed the study in one of the two groups

ArmMeasureValue (MEDIAN)
Preoperative Adductor Canal Block GroupTotal Opioid Consumption45.00 milligram morphine equivalents
Postoperative Adductor Canal Block GroupTotal Opioid Consumption36.00 milligram morphine equivalents

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026