A Study Comparing Shoulder Replacement Techniques For Patients With Shoulder Arthritis And An Intact Rotator Cuff (SOAR)

May 7, 2026 updated by: Jonathan D. Barlow, Mayo Clinic

A Randomized Trial Comparing Anatomic And Reverse Total Shoulder Replacement For Shoulder Arthritis With An Intact Rotator Cuff

The purpose of this study is to determine if patients undergoing anatomic total shoulder arthroplasty (aTSA) will have improved patient reported outcome scores at 1 year compared to those undergoing reverse total shoulder arthroplasty (rTSA).

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

108

Phase

  • 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 Contact

Study Contact Backup

Study Locations

  • United States
    • Minnesota
      • Rochester, Minnesota, United States, 55905
        • Mayo Clinic in Rochester

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

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria

  • Shoulder arthritis
  • Intact rotator cuff
  • Glenoid retroversion less than 25°

Exclusion Criteria

  • Rotator cuff insufficiency
  • Fracture deformity/sequelae
  • Severe glenoid deformity (C glenoid, severe A2, B2 glenoid)
  • Current or previous infection of shoulder
  • Previous acromion fracture (not os acromiale)
  • Brachial plexopathy
  • Axillary neuropathy
  • Current drug or alcohol use or dependence that, in the opinion of the site investigator, would interfere with adherence to study requirements.
  • Inability or unwillingness of individual or legal guardian/representative to give written informed consent.
  • Medical conditions that would make 2 years follow up unlikely
  • Non-English speaking

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: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Anatomic total shoulder arthroplasty (aTSA)
Procedure: aTSA
Patients with shoulder arthritis with an intact rotator cuff that requires surgical correction will undergo anatomic total shoulder arthroplasty (aTSA) procedure.
Other Names:
  • Anatomic total shoulder arthroplasty
Other: Reverse total shoulder arthroplasty (rTSA)
Procedure: rTSA
Patients with shoulder arthritis with an intact rotator cuff that requires surgical correction will undergo reverse total shoulder arthroplasty (rTSA) procedure.
Other Names:
  • Reverse total shoulder arthroplasty

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
American Shoulder and Elbow Surgeons (ASES) Questionnaire score
Time Frame: 1 year
The American Shoulder and Elbow Surgeons (ASES) score is a self-report survey consisting of a pain scale and activities of daily living section. Total scores range from 0 to 100, where higher scores indicate better shoulder function and less pain.
1 year

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in Visual Analog Scale (VAS) Score
Time Frame: Baseline, 6 weeks, 3 months, 6 months, 12 months, 24 months
The Visual Analog Scale (VAS) is a 1 item self-report survey that asks the subject to rate the level of pain on a scale of 0 (no pain) - 10 (worst imaginable pain).
Baseline, 6 weeks, 3 months, 6 months, 12 months, 24 months
Change in Single Assessment Numeric Evaluation (SANE) Score
Time Frame: Baseline, 6 weeks, 3 months, 6 months, 12 months, 24 months
The Single Assessment Numeric Evaluation (SANE) is a 2 item self-report survey that asks subjects to rate the percent of normal range on both the affected joint/region and the opposite joint/region. Scores range from 0% - 100%, with 100% indicating normal range.
Baseline, 6 weeks, 3 months, 6 months, 12 months, 24 months
Change in American Shoulder and Elbow Surgeons (ASES) Questionnaire score
Time Frame: Baseline, 6 weeks, 3 months, 6 months, 24 months
The American Shoulder and Elbow Surgeons (ASES) score is a self-report survey consisting of a pain scale and activities of daily living section. Total scores range from 0 to 100, where higher scores indicate better shoulder function and less pain.
Baseline, 6 weeks, 3 months, 6 months, 24 months
Change in Shoulder Subjective Value (SSV) Score
Time Frame: Baseline, 6 weeks, 3 months, 6 months, 12 months, 24 months
The Subjective Shoulder Value (SSV) is 1 item self-report survey that asks subjects to rate their overall shoulder function as a percentage of a "normal" (100%) shoulder.
Baseline, 6 weeks, 3 months, 6 months, 12 months, 24 months
Change in Activities of Daily Living in External Rotation (ADLER) score
Time Frame: Baseline, 1 year
The Activities of Daily Living in External Rotation (ADLER) is a self-report tool used to assess shoulder disability by quantifying a patient's ability to perform 10 specific daily tasks requiring active external rotation. Higher maximum scores indicate better functional ability.
Baseline, 1 year
Change in Activities of Daily Living Includes Internal Rotation (ADLIR) score
Time Frame: Baseline, 1 year
The Activities of Daily Living Includes Internal Rotation (ADLIR) is a self-report tool used to assess shoulder disability by quantifying a patient's ability to perform 9 specific daily tasks requiring active internal rotation. Higher maximum scores indicate better functional ability.
Baseline, 1 year

Collaborators and Investigators

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

Sponsor

Mayo Clinic

Investigators

  • Principal Investigator: Jonathan D. Barlow, MD, Mayo Clinic

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.

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 (Estimated)

July 1, 2026

Primary Completion (Estimated)

July 1, 2029

Study Completion (Estimated)

December 1, 2029

Study Registration Dates

First Submitted

May 7, 2026

First Submitted That Met QC Criteria

May 7, 2026

First Posted (Actual)

May 13, 2026

Study Record Updates

Last Update Posted (Actual)

May 13, 2026

Last Update Submitted That Met QC Criteria

May 7, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • 26-002449

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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