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Shoulder surgery showdown: onlay vs. inlay – which works better?

NCT ID NCT05297305

Knowledge-focused Sponsor: Corewell Health East Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early This study
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

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

Summary

This study looked at two different ways surgeons place the top part of a reverse shoulder replacement: sitting on top of the bone (onlay) or set into the bone (inlay). The goal was to see if one method leads to better arm movement after surgery. The study enrolled 19 people with shoulder arthritis or rotator cuff injuries, but it was stopped early, so results are limited.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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

19 people

The number who actually took part.

Started

Oct 2023

Finished

Nov 2025

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

18 years and older

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: * Patients undergoing primary reverse total shoulder arthroplasty with the following components: 1. Onlay group: Ascend Flex stem, Perform Reversed standard +3 lateralized 25mm baseplate with standard 36 mm glenosphere or +6 lateralized 25mm baseplate with 39mm glenosphere 2. Inlay group: Perform Stem Reverse, Perform Reversed +3 lateralized 25mm baseplate with standard 36mm glenosphere or +6 lateralized 25mm baseplate with 39mm glenosphere * Diagnosis of cuff tear arthropathy, massive cuff tear, or primary osteoarthritis with cuff tear * Negative external rotation lag sign, ability to externally rotate beyond neutral * Age 18 years or older Exclusion Criteria: * Revision arthroplasty * Prior open shoulder surgery * Concomitant tendon transfer (Latissimus Dorsi, Pectoralis Tendon, Lower Trapezius) * Diagnosis of rheumatoid arthritis, infection, acute trauma or instability * Patients not willing to undergo a standardized physical therapy protocol or home therapy program after surgical intervention * Patient anatomy does not accommodate the study implants per surgeon discretion * Pregnant, patient-reported * Minors (under 18 years of age) * Cognitively impaired based on a diagnosis of dementia, psychiatric disorder, or any cognitive deficit that will not allow for proper informed consent or answering of study questionnaires

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Conditions

The condition(s) this trial relates to.

arthritic joint disease osteoarthritis Rotator Cuff Injuries rotator cuff syndrome Shoulder Pain

As listed by the trial registrant

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

Arthritis shoulder Rotator cuff injuries

Contacts and locations

Locations

  • William Beaumont Hospital

    Royal Oak, Michigan, 48073, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.