Pilot study comparing the efficacy of intra-articular glenohumeral injection combined with suprascapular nerve block versus intra-articular glenohumeral corticosteroid injection in adhesive capsulitis.

2026-525317-31-00 Protocol RC25_0554 Therapeutic exploratory (Phase II) Authorised, recruitment pending

Status Authorised, recruitment pending · 1 EU/EEA countries · 1 sites · Protocol RC25_0554

Overview

Sponsor-declared trial summary

Phase Therapeutic exploratory (Phase II)
Status Authorised, recruitment pending
Participants planned 38
Countries 1
Sites 1

Retractile Capsulitis

Compare the improvement in shoulder function at 3 months between the intra-articular injection group combined with a suprascapular nerve block and the intra-articular injection group combined with a placebo block.

Key facts

Sponsor
Centre Hospitalier Universitaire De Nantes
Participant type
Patients
Age range
18-64 years
Gender
Male and Female
Therapeutic area
Diseases [C] - Musculoskeletal Diseases [C05]
Decision date (initial)
2026-05-29
Transition trial
No
Low-intervention
Yes
Rare-disease indication
No
Vulnerable population
No
Funding sources
CHU de Nantes - Appel d'Offre Interne

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Therapy

Compare the improvement in shoulder function at 3 months between the intra-articular injection group combined with a suprascapular nerve block and the intra-articular injection group combined with a placebo block.

Secondary objectives 5

  1. Comparison of functional outcomes between the two groups up to 12 months
  2. Comparison of pain progression between the two groups over a 12-month period
  3. Comparison of joint range of motion between the two groups up to 12 months
  4. Assessment of tolerance of movements
  5. Assessment of return to work.

Conditions and MedDRA coding

Retractile Capsulitis

VersionLevelCodeTermSystem organ class
21.0 LLT 10017391 Frozen shoulder 10028395

Study design 1 period

#TitleAllocationBlindingRoles blindedArms
1 Overall Trial
- Overall Trial - Pilot study, - Single-center, - Prospective, - Double-blind (patient/evaluator) - Superiority study, - Randomized into 2 parallel groups (1:1 ratio) o Experimental group: suprascapular nerve block (with lidocaine and betamethasone) + intra-articular injection o Control group: suprascapular nerve block (with saline solution) + intra-articular injection
Randomised Controlled Double [{"id":184302,"code":2,"name":"Investigator"},{"id":184301,"code":1,"name":"Subject"}] Experimental group: suprascapular nerve block (lidocaine and betamethasone) + intra-articular injection
Control group: injection of saline solution around the suprascapular nerve (placebo) + intra-articular injection

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 3

  1. Patients with shoulder stiffness lasting at least 2 months and less than 12 months, with a loss of passive joint range of motion in at least 2 planes (lateral rotation, medial rotation, abduction, antepulsion) of at least 30 degrees compared to the contralateral side
  2. Patients aged between 18 and 65 years
  3. Patients affiliated with a social security system

Exclusion criteria 15

  1. Corticosteroid injection in the affected shoulder < 4 months
  2. Psychiatric condition likely to be decompensated by corticosteroids
  3. Women who are pregnant or breastfeeding or who refuse effective contraception
  4. Patients participating in another clinical research protocol involving a drug or medical device
  5. Patients refusing to participate in the study
  6. History of any surgery on the affected shoulder within the last 12 months
  7. Patients with neuromuscular disorders (neurological deficits) or shoulder disorders (arthropathy) that could interfere with the assessment of the primary endpoint
  8. Signs or risks of infection (bacterial infection and/or fever and/or antibiotic use)
  9. Poor skin condition of the pathological shoulder
  10. - Anticoagulation with VKA or anti-Xa, or bleeding disorder currently active or in remission for less than 5 years (malignant blood disorders, myelodysplasia, autoimmune thrombocytopenia) or chemotherapy (antiplatelet agents authorized except prasugrel and clopidogrel)*
  11. Uncontrolled high blood pressure,
  12. Uncontrolled diabetes or at risk of decompensation,
  13. Contraindications for diprosten, Kenacort, or lidocaine
  14. Persons belonging to a vulnerable group as defined by Regulation (EU) No. 536/2014 and French law
  15. Patients who are unable to comply with the protocol requirements

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. The primary endpoint is the difference in Quick DASH scores between enrollment and M3.

Secondary endpoints 5

  1. Assessment of function using a Quick Dash score on D0, M1, M3, M6, and M12 and measurement of the area under the curve.
  2. Assessment of pain: VAS on D0, M1, M3, M6, and M12
  3. Measurement of joint range of motion with a goniometer on D0, M1, M3, M6, and M12.
  4. EVA pain before and after the procedure; collection of adverse events at Day 0, Month 1, Month 3, Month 6, and Month 12.
  5. Time to return to work after the procedure for patients who were employed at Day 0, 1 month, 3 months, 6 months, and 12 months.

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 2

DIPROSTENE, suspension injectable en seringue pré-remplie

PRD8891787 · Product

Active substance
Betamethasone Dipropionate
Pharmaceutical form
SUSPENSION FOR INJECTION
Route of administration
INFILTRATION
Max daily dose
1 ml millilitre(s)
Max total dose
1 ml millilitre(s)
Max treatment duration
1 Day(s)
Authorisation status
Authorised
ATC code
H02AB01 — BETAMETHASONE
Marketing authorisation
34009 320 050 9 3
MA holder
ORGANON FRANCE
MA country
France
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Lidocaine Hydrochloride

SUB88133 · Substance

Active substance
Lidocaine Hydrochloride
Pharmaceutical form
SOLUTION FOR INJECTION
Route of administration
INFILTRATION
Max daily dose
10 ml millilitre(s)
Max total dose
10 ml millilitre(s)
Max treatment duration
1 Day(s)
Authorisation status
Authorised
ATC code
- — -
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Placebo 1

Sodium Chloride

SUB12581MIG · Substance

Active substance
Sodium Chloride
Pharmaceutical form
SOLUTION FOR INJECTION
Route of administration
INFILTRATION
Max daily dose
9 ml millilitre(s)
Max total dose
9 ml millilitre(s)
Max treatment duration
1 Day(s)
Authorisation status
Authorised
ATC code
- — -
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Centre Hospitalier Universitaire De Nantes

Sponsor organisation
Centre Hospitalier Universitaire De Nantes
Address
5 Allee De L Ile Gloriette, Cs 69301 Cs 69301
City
Nantes Cedex 1
Postcode
44093
Country
France

Scientific contact point

Organisation
Centre Hospitalier Universitaire De Nantes
Contact name
Arnolfo

Public contact point

Organisation
Centre Hospitalier Universitaire De Nantes
Contact name
Arnolfo

Locations

1 EU/EEA country · 1 investigational sites

By country

CountryMS statusPlanned subjectsSites
France Authorised, recruitment pending 38 1
Rest of world 0

Investigational sites

France

1 site · Authorised, recruitment pending
Centre Hospitalier Universitaire De Nantes
Service de Rhumatologie, 5 Allee De L Ile Gloriette, Cs 69301, Nantes Cedex 1

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Documents 6 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Protocol (for publication) D1_Protocol_2026-525317-31-00_FP 1.3
Recruitment arrangements (for publication) K1_Recruitment arrangements 2
Subject information and informed consent form (for publication) L1_SIS and ICF adults FP 1.3
Summary of Product Characteristics (SmPC) (for publication) G2_SmPC_Diprostene 1
Summary of Product Characteristics (SmPC) (for publication) G2_SmPC_Lidocaine 1
Synopsis of the protocol (for publication) D1_Protocol synopsis uk_2026-525317-31-00 1.2

Application history

1 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2026-02-06 France Acceptable
2026-05-26
2026-05-29