MedPath

A RCT Comparing Dronabinol to a Placebo for Post-operative Pain in Total Joint Arthroplasty

Phase 3
Recruiting
Conditions
Osteoarthritis, Knee
Interventions
Other: Placebo
Registration Number
NCT04298528
Lead Sponsor
Colorado Joint Replacement
Brief Summary

The primary purpose of this study was to determine if cannabinoid use decreases narcotic consumption in patients undergoing total knee arthroplasty (TKA).

Detailed Description

Subjects enrolled will be randomized into one of two groups either receiving the study drug or a placebo and will be followed for the first 6 weeks with regards to outcomes data.

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
460
Inclusion Criteria
  • Provision of signed and dated informed consent from
  • Stated willingness to comply with all study procedures and availability to attend all required visits for the duration of the study.
  • Male or Female
  • Age 21-75
  • Unilateral total knee arthroplasty at Colorado Joint Replacement
  • All individuals will be screened for drug use (including cannabis) at their preoperative appointment
  • Ability to take oral medication and be willing to adhere to the dronabinol regimen
  • For females of reproductive potential: use of highly effective contraception for at least 1 month prior to screening and agreement to use such a method during study participation.
  • For males of reproductive potential: use of condoms or other methods to ensure effective contraception with partner.
Exclusion Criteria
  • Narcotic use in the past 6 weeks
  • Regular cannabis use in the past 3 months
  • Major depression or anxiety disorders
  • Documented psychiatric illness (e.g. bipolar, schizophrenia)
  • Seizure disorder
  • Current or previous history of drug and alcohol abuse
  • Known allergic reactions to components of dronabinol
  • Tobacco use in the past 90 days
  • Treatment with another investigational drug
  • Patients that cannot receive spinal anesthesia
  • Patients that cannot receive the standardized multimodal pain medications (i.e. Tylenol, gabapentin and meloxicam)
  • Patients that are not able to go home after leaving the hospital and require a short term rehabilitation facility

Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Arm && Interventions
GroupInterventionDescription
placeboPlaceboPatient will be directed to take 2.5mg of Study Drug 2 times a day for 4 weeks. Patient is blinded as to whether or not this is Dronabinol.
dronabinolDronabinolPatient will be directed to take 2.5mg of Study Drug 2 times a day for 4 weeks. Patient is blinded as to whether or not this is Dronabinol.
Primary Outcome Measures
NameTimeMethod
Morphine Equivalence30 day's post operative

Morphine Equivalence of pain medication used after a total knee replacement

Secondary Outcome Measures
NameTimeMethod
Defense and Veterans Pain Scale30 day's post operative

Patients will keep a pain log after their joint replacement on a scale of 0 - 10

The Pittsburgh Sleep Quality Index4 weeks and 6 weeks post operative

To monitor sleeping habits

The Veterans Rand 12-Item Health Survey6 weeks post operative

Patient reported outcome

Nausea30 day's post operative

Patients post operative nausea will be collected as none/mild/moderate/severe

KOOS-12 Knee Survey6 weeks post operative

Patient reported outcome

Knee Society Score4 weeks post operative

Patient reported outcome

Trial Locations

Locations (1)

Colorado Joint Replacement

🇺🇸

Denver, Colorado, United States

© Copyright 2025. All Rights Reserved by MedPath