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Knee Injection RCT

Efficacy and Cost-effectiveness of Intra-Articular Ketorolac Injection for Knee Osteoarthritis: A Randomized, Controlled, Double-Blinded Study

Status
Terminated
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03694821
Enrollment
18
Registered
2018-10-03
Start date
2018-07-05
Completion date
2019-07-16
Last updated
2020-02-18

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

Conditions

Osteoarthritis

Keywords

Osteoarthritis, Knee, Injection, Ketorolac

Brief summary

Hypothesis: Ketorolac injection is a cost-effective adjunct in the nonoperative treatment of knee osteoarthritis (OA) compared to steroids and viscosupplementation. Aims/objectives: The objective of this randomized, controlled, double-blinded, prospective study is to assess the efficacy and cost-effectiveness of knee injection with ketorolac in the nonsurgical management of symptomatic OA compared to injections with corticosteroids and viscosupplements.

Detailed description

The purpose of this research study is to examine the effectiveness of intra-articular (inside the joint) ketorolac injection compared to injection with either corticosteroid or hyaluronic acid for the treatment of painful knee osteoarthritis. Patients will be randomly assigned to receive either ketorolac (a nonsteroidal anti-inflammatory drug, methylprednisolone (a steroid), hyaluronic acid (a substance that is naturally present in the human body).

Interventions

DRUGKetorolac Tromethamine Injection

One knee injection of 2cc of ketorolac tromethamine (15mg/cc) in 5cc of 0.5% ropivacaine hydrochloride without epinephrine

One knee injection of 2 cc of methylprednisolone acetate (40mg/cc) in 5cc of 0.5% ropivacaine hydrochloride without epinephrine

One knee injection of Hylan G-F 20 (Synvisc-One)

Sponsors

Orthopedic Research and Education Foundation
CollaboratorOTHER
UConn Health
Lead SponsorOTHER

Study design

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

Eligibility

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

Inclusion criteria

* Patients over the age of 18 who present with 1) symptomatic knee OA and radiographic evidence of joint space narrowing and 2) are interested in knee injections for pain relief.

Exclusion criteria

* Prior injections into the same knee within the past 6 months, * Pregnant and/or lactating women, * Inflammatory joint disease including rheumatoid or psoriatic arthritis, * Concurrent use of anti-rheumatic drugs, * Allergy or hypersensitivity to the study medications, * Patients on an active pain management contract, * Patients with insurance that requires pre-certification for any of the study drugs, * Inability to make own decisions regarding the informed consent, * Inability to read and/or understand English, * Patients who are unable to return for follow-up or be reached by phone.

Design outcomes

Primary

MeasureTime frameDescription
Visual Analogue Pain Scale (VAS)3 months post injectionaverage knee pain between 0 (no pain) and 10 (worst pain) 3 months following injection

Secondary

MeasureTime frameDescription
Oxford Knee Questionnaire3 and 6 months post injectionself-reported pain, stiffness and functioning
Koos, Jr. Knee Survey3 and 6 months post injectionself-reported pain, stiffness and functioning
Visual Analogue Pain Scale (VAS)6 monthsaverage knee pain between 0 (no pain) and 10 (worst pain) 6 months following injection
Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)3 and 6 months post injectionself-reported pain, stiffness and functioning
Non-routine Visits Due to Inadequate Pain Relief or Complications3 months post injectionAny additional visits due to inadequate pain relief or complications
Cost of Intervention3 months post injectioncost of each injection
Patient Satisfaction3 and 6 months post injectionsatisfaction with treatment rated as Yes or No

Countries

United States

Participant flow

Participants by arm

ArmCount
Ketorolac
One knee injection of 2cc of ketorolac tromethamine (15mg/cc) in 5cc of 0.5% ropivacaine hydrochloride without epinephrine Ketorolac Tromethamine Injection: One knee injection of 2cc of ketorolac tromethamine (15mg/cc) in 5cc of 0.5% ropivacaine hydrochloride without epinephrine
4
Corticosteroid
One knee injection of 2 cc of methylprednisolone acetate (40mg/cc) in 5cc of 0.5% ropivacaine hydrochloride without epinephrine Methylprednisolone Acetate Injection: One knee injection of 2 cc of methylprednisolone acetate (40mg/cc) in 5cc of 0.5% ropivacaine hydrochloride without epinephrine
8
Hyaluronic Acid
One knee injection of Hylan G-F 20 (Synvisc-One) Hylan G-F 20: One knee injection of Hylan G-F 20 (Synvisc-One)
6
Total18

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyStudy terminated484

Baseline characteristics

CharacteristicKetorolacCorticosteroidHyaluronic AcidTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants2 Participants2 Participants4 Participants
Age, Categorical
Between 18 and 65 years
4 Participants6 Participants4 Participants14 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants1 Participants1 Participants3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
3 Participants7 Participants5 Participants15 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants3 Participants1 Participants4 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants1 Participants1 Participants3 Participants
Race (NIH/OMB)
White
3 Participants4 Participants4 Participants11 Participants
Sex: Female, Male
Female
2 Participants5 Participants4 Participants11 Participants
Sex: Female, Male
Male
2 Participants3 Participants2 Participants7 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 40 / 80 / 6
other
Total, other adverse events
1 / 40 / 80 / 6
serious
Total, serious adverse events
0 / 40 / 80 / 6

Outcome results

Primary

Visual Analogue Pain Scale (VAS)

average knee pain between 0 (no pain) and 10 (worst pain) 3 months following injection

Time frame: 3 months post injection

Population: Data were collected, but the PI has left the institution. All efforts to locate and analyze the data have been exhausted; therefore no data are available to report.

Secondary

Cost of Intervention

cost of each injection

Time frame: 3 months post injection

Population: Data were collected, but the PI has left the institution. All efforts to locate and analyze the data have been exhausted; therefore no data are available to report.

Secondary

Koos, Jr. Knee Survey

self-reported pain, stiffness and functioning

Time frame: 3 and 6 months post injection

Population: Data were collected, but the PI has left the institution. All efforts to locate and analyze the data have been exhausted; therefore no data are available to report.

Secondary

Non-routine Visits Due to Inadequate Pain Relief or Complications

Any additional visits due to inadequate pain relief or complications

Time frame: 3 months post injection

Population: Data were collected, but the PI has left the institution. All efforts to locate and analyze the data have been exhausted; therefore no data are available to report.

Secondary

Oxford Knee Questionnaire

self-reported pain, stiffness and functioning

Time frame: 3 and 6 months post injection

Population: Data were collected, but the PI has left the institution. All efforts to locate and analyze the data have been exhausted; therefore no data are available to report.

Secondary

Patient Satisfaction

satisfaction with treatment rated as Yes or No

Time frame: 3 and 6 months post injection

Population: Data were collected, but the PI has left the institution. All efforts to locate and analyze the data have been exhausted; therefore no data are available to report.

Secondary

Visual Analogue Pain Scale (VAS)

average knee pain between 0 (no pain) and 10 (worst pain) 6 months following injection

Time frame: 6 months

Population: Data were collected, but the PI has left the institution. All efforts to locate and analyze the data have been exhausted; therefore no data are available to report.

Secondary

Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)

self-reported pain, stiffness and functioning

Time frame: 3 and 6 months post injection

Population: Data were collected, but the PI has left the institution. All efforts to locate and analyze the data have been exhausted; therefore no data are available to report.

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026