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Clinical Trials/NCT07430085
NCT07430085
Not yet recruiting
Phase 4

Postoperative Pain Outcomes After Use of Bupivacaine-Meloxicam Extended-Release Solution in Robot Assisted Total Knee Arthroplasty: A Prospective Study

Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)0 sites150 target enrollmentStarted: January 31, 2026Last updated:

Overview

Phase
Phase 4
Status
Not yet recruiting
Sponsor
Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)
Enrollment
150
Primary Endpoint
Patient reported outcome measure (Numeric Rating Scale)

Overview

Brief Summary

Prospective Cohort of patients who are scheduled for a Robot Assisted Total Knee Arthroplasty (RATKA). A prospective survey of patient reported outcome measures (Numeric Rating Scale) will be obtained postoperatively of 72 hours, as well as at the postoperative opioid consumption after 72 hours.

Detailed Description

Opioid use is a well-discussed issue in the United States among orthopedic surgeons, as while these drugs are helpful and necessary, they pose the risk of addiction and ultimately should be used as sparingly as possible. By taking a multimodal approach to pain management, this can be successfully achieved. Periarticular injections are currently used to achieve this goal, and 2021 a bupivacaine-meloxicam extended-release periarticular injection (Zynrelef) was introduced and is regularly implemented into RATKAs. Randomized clinical trials found that Zynrelef's use in traditional total knee arthroplasties (TKA) was just as effective as standard periarticular injections in reducing opioid use and pain, but whether Zynrelef works just as well if not better in RATKA is not yet established.

Objectives: (primary and important secondary objectives)

To evaluate the improvement in pain and use of opioids of a patient who received Zynrelef after undergoing RATKA compared to the traditional periarticular injections commonly used. The secondary objective will be documentation of the patient's use of other oral OTC pain relievers, such as acetaminophen or NSAIDs.

Study Design:

Prospective Cohort Study (double arm)

Setting/Participants:

Patients who have undergone a standard of care RATKA at any Allegheny Health Network facility who consent to filling out a survey addressing their reported outcomes.

Study Interventions and Measures:

Patients will be evaluated with the Numeric Rating Scale (NRS) on postoperative days 1-3. Patients will be given paper forms which will be collected by the physicians at their next postoperative visit. A retrospective review of Epic Electronic Medical Records (EMR) will also be conducted to describe basic demographic characteristics.

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel
Primary Purpose
Treatment
Masking
Double (Participant, Investigator)

Eligibility Criteria

Ages
18 Years to 89 Years (Adult, Older Adult)
Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Males or females aged 18-89 years
  • Diagnosed with knee osteoarthritis requiring surgical intervention
  • Indicated for unilateral RATKA

Exclusion Criteria

  • Pediatric, pregnant, or incarcerated patients
  • BMI of more than 45 kg/m2
  • Prolonged opioid use history of \>5 mg/day for \>1 month
  • History of contralateral TKA \<2 years prior to the index TKA
  • Type 1 Hypersensitivity to NSAIDs or local anesthetics
  • Diagnosis of severe renal disease

Arms & Interventions

Zynrelef

Experimental

Periarticular injection of bupivacaine-meloxicam extended release

Intervention: bupivacaine-meloxicam (extended release) (Combination Product)

Control

Active Comparator

Periarticular injection of bupivacaine, ketorolac, and lidocaine

Intervention: bupivacaine + ketorolac + lidocaine (Combination Product)

Outcomes

Primary Outcomes

Patient reported outcome measure (Numeric Rating Scale)

Time Frame: From completion of surgery to 3 days post-op

Self-report of pain using numeric scale

Amount of opioid medications used (measured in morphine milligrams equivalents)

Time Frame: From completion of surgery to 3 days post-op

Self-report of opioid medications

Secondary Outcomes

  • Complications and Adverse Events(From completion of surgery to 3 days post-op)
  • Amount of oral OTC pain reliever medications used(From completion of surgery to 3 days post-op)

Investigators

Sponsor
Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)
Sponsor Class
Other
Responsible Party
Principal Investigator
Principal Investigator

Andrew Waligora

Physician

Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)

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