- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02967640
Does Subacromial Injection With Glutamate Receptor Antagonist, Ketamine, Attenuate Pain in Rotator Cuff Tendinopathy?
Does Subacromial Injection With Glutamate Receptor (NMDAR) Antagonist, Ketamine, Attenuate Pain in Rotator Cuff Tendinopathy?
The hypothesis of the present study is that in patients with rotator cuff tendinopathy a specific pharmacological blocking of peripheral glutamate-receptor N-methyl-d-aspartate receptor type1 (NMDAR) glutamate receptors will result in pain alleviation. Activated NMDAR1 has been demonstrated to be crucial for pain regulation in various pain disorders, and in biopsies from patients with tendinopathy, NMDAR1 was found to be activated.
To test this hypothesis a specific NMDA receptor antagonist, ketalar (ketamine), will be injected guided by ultrasound into the subacromial space in patients with rotator cuff tendinopathy, and subsequently the pain response will be assessed.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Anticipated)
Phase
- Phase 2
- Phase 3
Contacts and Locations
Study Locations
-
-
-
Kristiansund, Norway
- Recruiting
- Department of Orthopedic Surgery, Kristiansund Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- diagnosis of rotator cuff tendinopathy by exercise-related shoulder pain with positive impingement tests as described by Hawkins and Neers, and MRI findings consistent with tendinopathy.
- Symptom duration at least 1 year to ensure neuronal ingrowth and NMDAR expression
Exclusion Criteria:
- previous surgery in any shoulder.
- previous cortisone use, either as injections or orally
- symptoms or signs of cervicobrachialgia or polyneuropathy
- full thickness rotator cuff ruptures verified by MRI
- primary inflammatory mediated pain, hence, patients with glenohumeral arthrosis, glenohumeral arthritis or systemic disorders predisposing for arthritis
- a central component of pain perception manifested by radiating pain in the involved limb; implying worse outcome after subacromial decompression.
- pregnancy
- breastfeeding
- reduced liver function (Increased serum bilirubin, ASAT or ALAT), decompensated heart failure (NYHA class 3-4)
- increased intracranial pressure or disease of the central nervous system (CNS)
- chronic alcoholism
- epilepsy
- psychiatric disease, increased intraocular pressure
- acute intermittent porphyria
- hyperthyroidism
- use of thyroid hormones
- upper respiratory tract infections
- pneumonia
- intracranial lesions
- acute head injuries
- ocular injuries
- hydrocephalus
- risk factors predisposing for intra-articular bleeding
- increased risk of infection
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Ketalar
ketalar injection, subacromial
|
2,5 ml - if well tolerated immediately followed by another 2,5 ml - of an approximately 1 mg/ml ketalar solution (1 ml of ketalar 10 mg/ml + 9 ml of NaCl 9%) injected 2 times with 1-12 weeks between each injection
Other Names:
2,5 ml - if well tolerated immediately followed by another 2,5 ml - of a 9% NaCl solution injected 2 times with 1-12 weeks between each injection
|
Placebo Comparator: Placebo
physiological sodium chloride (NaCl 9%) injection, subacromial
|
2,5 ml - if well tolerated immediately followed by another 2,5 ml - of an approximately 1 mg/ml ketalar solution (1 ml of ketalar 10 mg/ml + 9 ml of NaCl 9%) injected 2 times with 1-12 weeks between each injection
Other Names:
2,5 ml - if well tolerated immediately followed by another 2,5 ml - of a 9% NaCl solution injected 2 times with 1-12 weeks between each injection
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Supraspinatus pressure pain threshold
Time Frame: 30 minutes
|
Comparison of supraspinatus pressure pain threshold measured in Lbs/cm3, after selective N-methyl-d-aspartate receptor type 1 blocking by ketalar injection subacromially controlled against ringer acetate injection
|
30 minutes
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Western Ontario Rotator Cuff Index
Time Frame: 30 minutes
|
Comparisons of shoulder function assessed by Western Ontario Rotator Cuff index in the same patient group after selective N-methyl-d-aspartate receptor type 1 blocking by ketalar injection subacromially controlled against Ringer acetate injection.
|
30 minutes
|
Oxford Shoulder Score
Time Frame: 30 minutes
|
Comparison of shoulder function assessed by Oxford Shoulder Score after selective N-methyl-d-aspartate receptor type 1 blocking by ketalar injection subacromially controlled against Ringer acetate injection.
|
30 minutes
|
Pain
Time Frame: 30 minutes
|
Comparison of pain assessed by a visual analogue scale both at rest and abduction, after selective N-methyl-d-aspartate receptor type 1 blocking by ketalar injection subacromially controlled against Ringer acetate injection.
|
30 minutes
|
Pressure pain tolerance
Time Frame: 30 minutes
|
Comparison of pressure pain tolerance measured in Lbs/cm3, both at rest and abduction, after selective N-methyl-d-aspartate receptor type 1 blocking by ketalar injection subacromially controlled against Ringer acetate injection.
|
30 minutes
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Pain
- Neurologic Manifestations
- Wounds and Injuries
- Musculoskeletal Diseases
- Muscular Diseases
- Rupture
- Shoulder Injuries
- Tendon Injuries
- Rotator Cuff Injuries
- Chronic Pain
- Tendinopathy
- Physiological Effects of Drugs
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Central Nervous System Depressants
- Peripheral Nervous System Agents
- Analgesics
- Sensory System Agents
- Anesthetics, Dissociative
- Anesthetics, Intravenous
- Anesthetics, General
- Anesthetics
- Excitatory Amino Acid Antagonists
- Excitatory Amino Acid Agents
- Ketamine
Other Study ID Numbers
- 2012/1199
- 2012-002782-35 (EudraCT Number)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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