Shoulder surgery showdown: which replacement works best?

NCT ID NCT04629391

Disease control Sponsor: La Tour Hospital Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study compares two types of shoulder replacement surgery for people aged 65-85 with shoulder arthritis. The goal is to see if a newer type of replacement (reverse shoulder) works as well as the standard one. Participants will be randomly assigned to one surgery and followed for two years to measure function, pain, and complications.

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Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 296 people

The number the study aims to enrol. It can still change while the study runs.

Started

Sep 2020

Expected to finish

May 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

65 to 85 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Primary glenohumeral arthritis, * Intact rotator cuff, * No important glenoid bone loss (cf exclusion criteria), * Patients between 65 and 85 years old * Informed Consent as documented by signature (Appendix Informed Consent Form). Exclusion Criteria: * B2 glenoid with \> 80% posterior humeral head subluxation or greater 25 degrees neoglenoid retroversion, * B3 and C type glenoids, * Full thickness rotator cuff tear, * Acute or malunited proximal humeral fracture, * Chronic locked dislocation * Rheumatoid arthritis, * Revision surgery or surgical antecedents, * Tumors, * Axillary nerve damage, * Non-functioning deltoid muscle, * Glenoid vault deficiency precluding baseplate fixation, * Infection and neuropathic joints, * Known or suspected non-compliance, drug or alcohol abuse, * Patients incapable of judgement or under tutelage, * Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, contraindication for CT scan etc. of the participant, * Enrolment of the investigator, his/her family members, employees and other dependent persons.

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Conditions

The condition(s) this trial relates to.

arthritic joint disease osteoarthritis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Arthritis shoulder

How to take part

Only the study team decides who joins. These are the ways to reach them.

The places running it

1 site. The list below names each one and where it is.
The official record

ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

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A doctor treating you

A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Shoulder surgery showdown: which replacement works best?

What the study statuses mean