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Liposomal Bupivacaine vs Perineural Adjuvants in Adductor Canalf and iPACK Blocks in Total Knee Arthroplasty

Liposomal Bupivacaine vs Perineural Adjuvants in Adductor Canal and iPACK Blocks in Patients Undergoing Primary Total Knee Arthroplasty

Status
Not yet recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07097493
Enrollment
90
Registered
2025-07-31
Start date
2027-02-01
Completion date
2027-06-01
Last updated
2026-08-25

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

Conditions

Knee Arthroplasty, Total

Keywords

pain, knee surgery, pain management

Brief summary

The purpose of this research study is to compare two different combinations of anesthetic medications to see which works the best in providing the longest lasting pain relief for total knee arthroplasty surgery. The drugs being used are liposomal bupivacaine compared to a combination of bupivacaine, clonidine, epinephrine, buprenorphine, and dexamethasone. Pain scores will be collected at different intervals during study participation.

Detailed description

This double-blinded prospective randomized control trial will evaluate analgesia following total knee arthroplasty for patients who receive an adductor canal block and infiltration between the popliteal artery and condyles of the knee (iPACK) block utilizing bupivacaine with the adjuvants clonidine, epinephrine, buprenorphine and dexamethasone (BPV-CEBD), as compared to patients who receive liposomal bupivacaine (LB) for both blocks. All patients will receive a spinal anesthetic with ropivacaine (17.5 mg) and fentanyl (10 mcg), and an adductor canal and iPACK block for analgesia. Patients randomized to the LB group will receive 10 ml of 0.25% bupivacaine expanded with 133 mg (10 ml volume) of LB into both the adductor canal and iPACK blocks (total of 40 ml). The BPV-CEBD group will receive a 20 ml of solution consisting of 0.25% bupivacaine, 1.667mcg/ml of clonidine, 1:400,000 epinephrine, 0.15 mg total of buprenorphine, and 2 mg total of preservative free dexamethasone - which will be used in both the adductor canal block and iPACK block (total of 40 ml). On post-operative day (POD) 0, rest and movement pain scores will be collected at 4 hours and 8 hours with time "zero" being the time of the final block placement. On POD 1 and 2, questionnaires will be collected for pain scores at 0700, 1200 and 1700. Participants will be called once daily on days 3 through 7 to collect remaining secondary data, including sleep score, quality of recovery, worst daily pain score, and patient satisfaction (POD 7 only).

Interventions

DRUGLiposomal Bupivacaine

10 ml of 0.25% bupivacaine expanded with 133 mg (10 ml volume) of liposomal bupivacaine into both the adductor canal and iPACK blocks (total of 40 ml)

DRUGBupivacaine, Clonidine, Epinephrine, Buprenorphine and Dexamethasone (BPV-CEBD) Combination

20 ml of solution consisting of 0.25% bupivacaine, 1.667mcg/ml of clonidine, 1:400,000 epinephrine, 0.15 mg total of buprenorphine, and 2 mg total of preservative free dexamethasone which will be used in both the adductor canal block and iPACK block (total of 40 ml)

Sponsors

Wake Forest University Health Sciences
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)

Eligibility

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

Inclusion criteria

* 18-80 years of age * Receiving primary total knee arthroplasty * Patients receiving a spinal anesthetic with ropivacaine and fentanyl * American Society of Anesthesiology (ASA) category 1 to 3

Exclusion criteria

* Revision of Total Knee Arthroplasty * Opioid use in the prior 6 months \> 40 mg oxycodone equivalents per day or long-acting opioids as determined by the Prescription Drug Monitoring Program (PDMP) * Patients planned to receive general anesthesia * Patients planned to receive a spinal other than ropivacaine * History of peripheral neuropathy * Poorly controlled diabetes (Hgb A1C \>8) * Allergies or contraindications to study medications: acetaminophen, celecoxib (including sulfa), methocarbamol, midazolam, fentanyl, bupivacaine, dexamethasone, acetaminophen, buprenorphine, NSAIDs, clonidine, epinephrine, and liposomal bupivacaine. * Unable to provide informed consent

Design outcomes

Primary

MeasureTime frameDescription
Pain Score with MovementBaselinenumerical rating scale pain score with movement utilizing the numerical rating pain score scale of 0 to 10, where 0 is no pain and 10 is the worst imaginable pain

Secondary

MeasureTime frameDescription
Pain Score with RestHour 48 post final block placementnumerical rating scale pain score with movement utilizing the numerical rating pain score scale of 0 to 10, where 0 is no pain and 10 is the worst imaginable pain
Pain Score with MovementHour 72 post final block placementnumerical rating scale pain score with movement utilizing the numerical rating pain score scale of 0 to 10, where 0 is no pain and 10 is the worst imaginable pain
Highest Daily Pain ScorePostop Days 3, 4, 5, 6, 7numerical rating scale pain score with movement utilizing the numerical rating pain score scale of 0 to 10, where 0 is no pain and 10 is the worst imaginable pain
Cumulative Opioid ConsumptionHour 48 post final block placementall opioids consumed and recorded in morphine milligram equivalents (MME) for postoperative Day 2
Quality of Recovery-15 Patient SurveyPostop Days 3, 4, 5, 6, 7quality of life questions rated on a 0-10 scale for 0=none of the time up to 10=all of the time on a daily basis; pain/nausea/vomiting/depression questions answered in a 10=none of the time down to a 0=all of the time (scales reversed on that scale)
Distance Walked24 hoursdistance (feet) walked during first physical therapy appointment
PROMIS Sleep Disturbance SurveyPostop Days 3, 4, 5, 6, 7quality of sleep rated on a scale of 0=very poor/not at all up to 5=very good/very much
Patient SatisfactionPostop Day 7measured with a 5-point Likert scale 0=not satisfied at all up to 5=best level of satisfaction
Incidence of Postoperative NauseaUp to Postop Day 7overall number of nausea occurrences
Incidence of Postoperative VomitingUp to Postop Day 7overall number of vomiting occurrences

Countries

United States

Contacts

CONTACTAfua Gyamfi, MD
agyamfi@wakehealth.edu336-716-4498
CONTACTLynnette Harris, RN
lynnette.harris@advocatehealth.org336-716-8791
PRINCIPAL_INVESTIGATORAfua Gyamfi, MD

Atrium Health Wake Forest Baptist

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 26, 2026