Parabens Flocculation on the Anti Inflammatory Effects of Corticosteroid Injections for Total Knee Arthroplasty

Osteoarthritis, Knee Clinical Trial

— 5160373  

Official title:

Clinical Significance of Parabens Flocculation on the Anti Inflrammmatory Effects of Corticosteroid Injection Osteoarthritic Knees

Clinical Trial Details — Status: Withdrawn

Administrative data

• NCT number: NCT03445611
• Other study ID #: 5160373
• Status: Withdrawn
• Phase: Early Phase 1
• Start date: September 15, 2019
• Est. completion date: October 30, 2019

Study information

• Verified date: June 2021
• Source: Loma Linda University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The purpose of this study is to identify whether corticosteroid use with anesthetics containing preservatives (parabens) reduces clinical effectiveness of the anti-inflammatory agent Up to 100 patients, both male and female, between the ages of 18-89 will be enrolled and randomized into either of the following groups; Group 1: These patients will receive a corticosteroid solution with lidocaine containing parabens.

Group 2: These patients will receive corticosteroid solution with paraben free lidocaine.

Description:

Corticosteroid injections have been used to treat inflammatory conditions for many decades (Storz 1973; Roszental, Zurakowski and Blazar 2008). In order to maximize the effectiveness on the synovial tissue, the concentrated form of corticosteroids is typically mixed with an anesthetic preparation. The corticosteroid suspension in a large volume of anesthetic can then disperse throughout the entire joint more effectively, especially in larger joints such as the knee (Centeno and Moore 1994). In addition, the anesthetic provides immediate relief to the area and can help verify that the injected site was the source of pain (Cole and Schumacher 2005). Typical preparations of anesthetic medications are sold in multi-use vials. The anesthetic solution usually contains a paraben preservative, except in the single vials used for spinal injections, because the use of paraben preservatives is contraindicated in spinal injections (Centeno and Moore 1994).

Celestone and Kenalog are two corticosteroid products that are commonly used for intra-articular injections. If co-administration of a local anesthetic is desired, the suspension of Celestone or Kenalog is commonly mixed with 1% or 2% Lidocaine hydrochloride from multi-use vials containing parabens in Orthopedic and Rheumatology clinics.

The orthopedic literature relating to injections rarely addresses the use of the anesthetic commonly used in injections. Flocculation occurs significantly when parabens are present, but the influence on the efficacy of the corticosteroid is unknown (Philipose et al. 2011; Hwang et al. 2016). There is abundant evidence that flocculation occurs when steroids are mixed with anesthetic solutions containing parabens however, the clinical significance of this phenomenon has not been reported. (Skedros and Pitts 2008b; Andreson, Deodhar and O'Rourke 2005; Skedros and Pitts 2008; Lutt, O'Rouke and Deodhar 2007; Cole and Schumacher 2005).

Cole and Schumacher (2005) suggest that flocculation can result from a chemical incompatibility between corticosteroid and other agents. Flocculation that occurs when corticosteroid is mixed with an anesthetic containing parabens may reduce the anti-inflammatory effect of the steroid. There are two possible mechanisms in which the corticosteroid preparation may be less effective. Flocculation may cause the corticosteroid to precipitate, thus reducing dispersal within the injected area (Centeno and Moore 1994). Additionally, flocculation may result from corticosteroid bonding with another molecule (such as methylparaben) within the anesthetic preparation, making it chemically less effective. The purpose of this study is to identify whether corticosteroid use with anesthetics containing parabens reduces clinical effectiveness relative to paraben-free preparations.

STUDY DESIGN:

OBJECTIVES:

The purpose of this study is to identify whether corticosteroid use with anesthetics containing parabens reduces clinical effectiveness relative to para-free preparations.

Hypothesis Alternate: Flocculation due to lidocaine containing parabens decreases the anti-inflammatory effects of corticosteroids when compared to paraben-free lidocaine.

Procedure:

The investigator will enroll up to 100 patients, both male and female, between the ages of 18-89. Once the patient has been consented, They will be randomized into group 1 or group 2. The randomization is a 1 to 1 ratio. Subsequent follow-up via phone call will take place on week 1, week 2, week 4, week 8, and week 16.

Group 1: These patients will receive a corticosteroid solution with lidocaine containing parabens.

Group 2: These patients will receive corticosteroid solution with paraben free lidocaine.

Corticosteroid injections will be given with or without ore-aspiration of synovial fluid. Patient will be in supine position with superior-lateral injection.

Material identification: Celestone soluspan or Kenalog 1% 50mL multiuse vials without epinephrine, 1% 5mL lidocaine vials, 10mL syringes with 21mm x 1 ¼ inch needles, alcohol swabs, exam gloves, betadine solution.

DATA COLLECTION:

The investigator will collect the patients age, sex, BMI, Medical history, along with the WOMAC survey, which asks about the patients knee and activity level and VAS, pain sale (0-10) 0 being the lease amount of pain and 10 being the worst.

Recruitment information / eligibility

• Status: Withdrawn
• Enrollment: 0
• Est. completion date: October 30, 2019
• Est. primary completion date: October 15, 2019
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 19 Years to 89 Years

Eligibility

Inclusion Criteria:

• Diagnosis of symptomatic primary knee osteoarthritis according to the American Rheumatism Association classification criteria for knee osteoarthritis, ability to understand study protocol and agreement to participate

Exclusion Criteria:

• History of any knee injection in the past 6 months, History of more than 2 injections in the knee under study, previous fracture or surgical procedure of knee under investigation, any benign or malignant tumor in knee, chemotherapy, hemearthosis, current infection in the affected limb.

Related Conditions & MeSH terms

• Osteoarthritis, Knee

Intervention

Drug:
• corticosteroid solution with lidocaine containing parabens.
To identify whether corticosteroid use with anesthetics containing parabens reduces clinical effectiveness relative to para-free preparations.
• corticosteroid solution with lidocaine containing no paraben
To identify whether corticosteroid use with anesthetics containing parabens reduces clinical effectiveness relative to para-free preparations.

Locations

Country	Name	City	State
United States	Loma Linda University Health, Department of Orthopaedic Surgery	Loma Linda	California

Sponsors (1)

Lead Sponsor	Collaborator
Loma Linda University

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	WOMAC-Western Ontario and McMaster Universities Osteoarthritis Index	This is a survey that asks your view about your knee. This information will help track how you feel about your knee and how well you are able to do your usual activities	6 months
Secondary	VAS-Visual Analogue Scale	This is a Scale used to measure pain intensity. It is a continuous scale comprised of a horizontal line, usually 10cm or 100mm in length, the patient will mark a line between the two end-points, indicating there pain level.	6 months