CClinicalTrials.gg
Status unknownNCT05751421Updated Mar 2, 2023

Pain Relief After PrimaryTKA

A Phase 3 interventional study of Zynrelef (Bupivacaine 60 MG / Meloxicam 1.8 MG) Per 2.3 ML Extended Release Solution and Bupivacaine HCl 0.5% Injectable Solution in Pain, Postoperative, sponsored by Rothman Institute Orthopaedics. Status unknown at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-03-02.

Sponsored by Rothman Institute Orthopaedics · Phase 3, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Feb 2023), so the status shown — last known as Enrolling by invitation — may be out of date.
Phase
Phase 3
Study type
Interventional
Enrollment
60
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

While a majority of people who undergo TKA have significant long-term improvement in functional ability, many patients may experience significant pain in the early postoperative period, which may adversely impact postoperative rehabilitation and recovery. Traditionally, opioid medications have been used to control postoperative pain. However, there are many risks with using opioid medications, including addiction and overdose, which kills over 48,000 people yearly. In an effort to overcome this, opioid-sparing multimodal analgesia (MMA) regimens have been developed, commonly using nonsteroid anti-inflammatory drugs (NSAIDs), acetaminophen, regional nerve blocks, and local anesthesia.

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Conditions studied

  • Pain, Postoperative

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03

In context

Pain, Postoperative

5,093 studies on the registry are indexed under Pain, Postoperative; 1,140 are open to participants now.

This study's planned enrollment of 60 is below the median of 75 across 4,344 interventional studies indexed under Pain, Postoperative.

Browse Pain, Postoperative studies →

Lead sponsor

Rothman Institute Orthopaedics is the lead sponsor of 118 studies on the registry; 17 are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Patients 18 years or older
  • Patients undergoing primary unilateral TKA
  • Patients receiving spinal anesthesia during primary TKA
  • Patients with adequate cognitive function to participate and complete questionnaires for the study

Exclusion criteria

Exclusion Criteria:

  • Patients undergoing bilateral simultaneous TKA
  • Patients undergoing conversion TKA
  • Patients undergoing unicompartmental knee arthroplasty
  • Patients undergoing patellofemoral arthroplasty
  • Patients with an allergy to NSAIDs or bupivacaine
  • Patients who have a contraindication to the use of NSAIDs
  • Patients who are using chronic anticoagulation, precluding them from using NSAIDs
  • Patients with a history or diagnosis of chronic pain syndrome or complex regional pain syndrome
  • Patients who are determined to be in severe pain from other concomitant conditions
  • Patients with chronic opioid use disorder, defined as patients who are taking more than 20 mg/day morphine milligram equivalents for 30 days consecutively in the 3 months prior to surgery.
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Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
60 participants (estimated)

Study arms

  • Experimental
    primary total knee replacement + Zynrelef

    Patients undergoing primary total knee replacement with Extended Relief Bupivacaine and Meloxicam (Zynrelef)

    Drug: Zynrelef (Bupivacaine 60 MG / Meloxicam 1.8 MG) Per 2.3 ML Extended Release Solution · Procedure: primary total knee replacement

  • Active comparator
    primary total knee replacement + adductor canal block (ACB)

    Patients undergoing primary total knee replacement with routine adductor canal block

    Drug: Bupivacaine HCl 0.5% Injectable Solution · Procedure: primary total knee replacement

Interventions

  • DrugZynrelef (Bupivacaine 60 MG / Meloxicam 1.8 MG) Per 2.3 ML Extended Release Solution

    zynrelef will be administered during surgery

  • DrugBupivacaine HCl 0.5% Injectable Solution

    adductor canal block will be performed using bupivacaine before surgery

  • Procedureprimary total knee replacement

    primary total knee replacement

06

What researchers measure

Primary outcomes

  1. Postoperative pain

    This will be measured by a postoperative Visual Analog Score (VAS) completed by the participant

    Time frame: 14 days

  2. Opioid consumption

    Participants will be asked to keep a diary of how much pain medication they took after surgery

    Time frame: 14 days

07

Study locations

1 site
  • Rothman Orthopaedic Institute
    Philadelphia, Pennsylvania 19107, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 2, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05751421
Lead sponsor
Rothman Institute Orthopaedics
Responsible party
Sponsor
First posted
Mar 2, 2023
Start date
Feb 28, 2023 (estimated)
Primary completion
Feb 28, 2024 (estimated)
Completion
Feb 28, 2024 (estimated)
Last update
Mar 2, 2023

Oversight

FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Feb 2023. You cannot join it, but the record below documents what was studied.

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