Platelet-rich Plasma in Calcific Tendinitis

April 17, 2026 updated by: Orthopedisch Centrum Oost Nederland

Calcific Tendinitis of the Rotator Cuff: a Randomized Controlled Trial to the Effects of the Adjuvant Application of Platelet-rich Plasma After Needle Aspiration of Calcific Deposits

Needle aspiration of calcific deposits (NACD ) is the treatment of choice for calcific tendinitis which does not respond to conservative treatment. NACD is effective in approximately 70% of the patients.When NACD is not effective, surgery is often the only treatment that remains.Surgery, however, is discouraged by th e Dutch guidelines for diagnosing and treating patients with subacromial pain syndrome.Therefore,both patients and the doctors treating those patients will benefit from a more effective minimal invasive treatment for calcific tendinitis.Injection of platelet-rich plasma (PRP) might, considering its positive effect on tissue repair, be a possible solution here.Previous research investigating the effects of PRP on other tendinopathies did, however, show controversial results. The aim of this double-blind randomized controlled trial is to investigate the effect of the adjuvant application of PRP after NACD on pain reduction ,recovery of shoulder function, tendon recovery,resorption of calcific deposits, the percentage of patients with persistent complaints and quality of life.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
80

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Netherlands
    • Overijssel
      • Hengelo, Overijssel, Netherlands, 7550 AM
        • Orthopedisch Centrum Oost Nederland/ZGT

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

14 years to 51 years (Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • age > 18 yrs
  • clinical manifestions of tendinitis calcarea (pain, stifness, lock sensations, muscle atrophy)
  • persistent pain sympoms >6 months
  • standardized AP x-ray shows calcific deposit of > 5mm & morphologic Type I & II deposits (classification of Gärtner en Simons)
  • ineffective intervention > 2 types of conservative treatment (among which are non-steroidal anti-inflammatory drugs, physiotherapy, local anesthesia injection and/or corticosteroids, extracorporele shock wave therapy)
  • indication and referral for barbotage by orthopeadic surgeon

Exclusion Criteria:

  • age > 55 years
  • morphological type III deposits according to classification of Gärtner and Simons) (as indicated by standardized x-ray AP)
  • bigliani type III acromion, and acromial spur of acromioclavicular osteovyt
  • previous (ineffective) barbotage
  • the existence of other shoulder related injuries next to calcific tendinitis (full-thickness rupture of the rotator cuff, adhesive capsulitis (frozen shoulder), arthrosis of the glenohumeral- or acromioclavicalar joint
  • shoulder joint instability
  • shoulder injury due to trauma or previous shoulder surgeries
  • other types of disorders that could negatively influence the outcomes (rheumatic arthritis. cervical spine disorders, neurological upper extremity disorders, diabetes mellitus, infections, blood disorders, malignity, pregnancy)
  • known allergic responses to one of the medications applied in the current study (lidocaine, bupivacaine, kenacort)
  • usage of anti-coagulants other than ascal of plavix

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: PRP group
PRP during barbotage
Other: PRP
platelet enriched autologous blood plasma
Other: Control group
Regular barbotage
Other: Control
Regular barbotage/care as usual

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Numeric Rating Scale (NRS) pain
Time Frame: 6 months post barbotage
Score to assess the amount of pain
6 months post barbotage

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Constant-Murley Score (CMS)
Time Frame: 6 weeks, 3 - 6- 12- 25 months post barbatoge
To assess shoulder function
6 weeks, 3 - 6- 12- 25 months post barbatoge
Quality of Life (EQ-5D)
Time Frame: 6 weeks, 3- 6- 12- 24 months post barbotage
score to assess the quality of life
6 weeks, 3- 6- 12- 24 months post barbotage

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Tendon recovery
Time Frame: 6 weeks, 3-6-12-24 months post barbotage
to visualize tendon recovery by ultrasound
6 weeks, 3-6-12-24 months post barbotage
calcifications
Time Frame: baseline, 3 + 12 months post barbotage
size of calcifications (X-ray)
baseline, 3 + 12 months post barbotage
plated plasma analysis
Time Frame: baseline
trombocytes analysis of PRP blood
baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Orthopedisch Centrum Oost Nederland

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Edwin Ooms, PhD, OCON
  • Study Director: Rianne Huis in 't Veld, PhD, OCON
  • Principal Investigator: Bart Oudelaar, MSc, OCON

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 1, 2014

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 13, 2019

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 13, 2019

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 19, 2014

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 23, 2014

First Posted (Estimated)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 25, 2014

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 22, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 17, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • NL47402.044.13
  • ABR 47402 (Other Identifier: Medical Ethical Committee Twente)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

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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