AzTrials
AzTrials

Reverse Shoulder ArthroplastyNCT04728282

Comparison of Lateralized RTSA With and Without Subscapularis Repair

A study testing RTSA with subscapularis repair and RTSA without subscapularis repair in people with Reverse Shoulder Arthroplasty, run by Panam Clinic at 6 sites in Canada.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

The purpose of this double-blind randomized controlled trial is to compare patient-reported, clinical, and functional outcomes in patients undergoing RTSA with and without subscapularis repair after placement of a modern "lateralized" implant over the course of 24-months postoperative. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Reverse Shoulder Arthroplasty
What is being tested?
RTSA with subscapularis repair and RTSA without subscapularis repair
Type of treatment
Surgery or procedure
Could I receive a placebo?
No, everyone receives an active treatment
How many people
284 participants
Where
6 sitesCanada
Study dates
1 Nov 2021to 1 Mar 2030
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Clinical diagnosis of glenohumeral arthritis, rotator cuff arthropathy, or massive irreparable rotator cuff tear with surgeon-patient decision to undergo RTSA
  • First RTSA implantation
  • Absence of neoplastic diseases at the treated site
  • Fatty infiltration of the subscapularis is low-grade (i.e. Goutallier < Grade 3) based on pre-operative CT performed as standard of care in the patient group

Who cannot join

  • Previous shoulder arthroplasty (hemi-, total shoulder, or RTSA)
  • Avascular necrosis
  • Post-infectious arthritis
  • Proximal humerus fracture
  • Inflammatory arthritis
  • Inability to communicate in English
Show all 11Show fewer
  • Unable to return for study visits to 24-months post-operative (e.g. unable to arrange transportation to study appointments, plans to relocate, etc.)
  • Intra-operative Exclusions:
  • Subscapularis with fatty infiltration (Goutallier ≥ 3)
  • Subscapularis that is deemed to be irreparable. An irreparable tendon is defined as one that is not of sufficient quality or does not allow adequate excursion to reach the repair site
  • Any anatomical or patient characteristic that warrants a non-lateralized implant

Trial locations and contacts

6 sites in 1 country. Contact the study team or a site near you to ask about taking part.

6 sites in 1 country

Canada6 sites, 6 recruiting
  • St. Joseph's Healthcare Hamilton

    Hamilton, Ontario

    Danielle Dagher, 905-522-1155 ext. 32953, ddagher@stjoes.ca

    Moin Khan

    Not yet recruiting
  • Fraser Orthopaedic Institute

    New Westminster, British Columbia, V3L 0E4

    Manuja Annthakumar, 604-553-3247, manuja.annthakumar@fraserhealth.ca

    Farhad Moola

    Not yet recruiting
  • The Ottawa Hospital

    Ottawa, Ontario

    Katie McIlquham, 613-737-8899 ext. 79839, kmciquham@ohri.ca

    Peter Lapner, MD

    Not yet recruiting
  • Saint John Orthopaedics

    Saint John, New Brunswick

    Dresden Forshner, 506-566-2515, dresden.forshner@horizonNB.ca

    Eva Gusnowski, MD

    Not yet recruiting
  • University of British Columbia

    Vancouver

    Manuja Annthakumar, 778-945-6756, manuja.annthakumar@vch.ca

    Alex Hoffer, MD

    Not yet recruiting
  • Pan Am Clinic

    Winnipeg, Manitoba, R3M 3E4

    Heather Normand, 204-925-7469, hnormand3@panamclinic.com

    Jarret Woodmass, MD

    Recruiting

Other trials in Canada

About this study

Official title: Randomized Clinical Trial Comparing Lateralized Reverse Total Shoulder Arthroplasty (RTSA) With and Without Subscapularis Repair

The purpose of this double-blind randomized controlled trial is to compare patient-reported, clinical, and functional outcomes in patients undergoing RTSA with and without subscapularis repair after placement of a modern "lateralized" implant over the course of 24-months postoperative.

Read the detailed description

The main objective of this study is to compare patient-reported outcome measures (PROMs), and clinical and functional outcomes between RTSA with and without subscapularis repair. The specific aims for this study are:

Specific Aim 1:

To determine if there is a difference in PROM scores between RTSA with and without subscapularis repair during the 24-month postoperative period.

Specific Aim 2:

To determine if there is a difference between the two surgical approaches with respect to shoulder function, specifically range of motion and strength, during the 24-month postoperative period.

Specific Aim 3:

To determine if there is a difference in shoulder dislocation rates between RTSA with and without subscapularis repair during the 24-month postoperative period.

Specific Aim 4:

To determine if there is a difference in surgical complications, re-operation or revision rates between RTSA with and without subscapularis repair during the 24-month postoperative period.

Specific Aim 5:

To quantify the operative times for RTSA with and without subscapularis repair, and determine if there is a difference between the two approaches.

Being tested
RTSA with subscapularis repair, RTSA without subscapularis repair
Keywords
reverse total shoulder arthroplasty, subscapularis, repair

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • RTSA with subscapularis repairProcedure or surgery

    Lateralized reverse total shoulder arthroplasty with repair of subscapularis

  • RTSA without subscapularis repairProcedure or surgery

    Lateralized reverse total shoulder arthroplasty without repair of subscapularis

Study groups in NCT04728282
Study groupRoleWhat they receive
RTSA with subscapularis repairExperimentalNot described
Receives: Procedure: RTSA with subscapularis repair
RTSA without subscapularis repairActive comparatorNot described
Receives: Procedure: RTSA without subscapularis repair

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. ASES Score

    The ASES is a patient-reported upper extremity-specific functional assessment tool and is scored out of a maximum 100 points, where 100 represents maximum function and no pain (Richards et al., 1994). It has a pain component measured on a visual analog scale as well as ten Likert-scale questions on function (e.g., put on a coat, sleep on affected side). The ASES is reliable and is validated for this population and is one of the most commonly used shoulder outcomes in North America.

    Measured: 24 months post-operative

Secondary outcomes (29)
  1. Constant Score

    The Constant Score is validated and reliable PROM/clinical tool used to evaluate overall shoulder function based on pain, activities of daily living, and the clinical evaluation of ROM and strength (Constant \& Murley, 1987). This score is widely reported in European-based literature. Minimum value is 0 and maximum value is 100, with higher scores being a better outcome.

    Measured: baseline pre-operative

  2. Constant Score

    The Constant Score is validated and reliable PROM/clinical tool used to evaluate overall shoulder function based on pain, activities of daily living, and the clinical evaluation of ROM and strength (Constant \& Murley, 1987). This score is widely reported in European-based literature. Minimum value is 0 and maximum value is 100, with higher scores being a better outcome.

    Measured: 3 months post-operative

  3. Constant Score

    The Constant Score is validated and reliable PROM/clinical tool used to evaluate overall shoulder function based on pain, activities of daily living, and the clinical evaluation of ROM and strength (Constant \& Murley, 1987). This score is widely reported in European-based literature. Minimum value is 0 and maximum value is 100, with higher scores being a better outcome.

    Measured: 6 months post-operative

  4. Constant Score

    The Constant Score is validated and reliable PROM/clinical tool used to evaluate overall shoulder function based on pain, activities of daily living, and the clinical evaluation of ROM and strength (Constant \& Murley, 1987). This score is widely reported in European-based literature. Minimum value is 0 and maximum value is 100, with higher scores being a better outcome.

    Measured: 12 months post-operative

  5. Constant Score

    The Constant Score is validated and reliable PROM/clinical tool used to evaluate overall shoulder function based on pain, activities of daily living, and the clinical evaluation of ROM and strength (Constant \& Murley, 1987). This score is widely reported in European-based literature. Minimum value is 0 and maximum value is 100, with higher scores being a better outcome.

    Measured: 24 months post-operative

  6. SANE Score

    The Single Assessment Numeric Evaluation (SANE) score is a single question that asks patients to rate their affected shoulder as a percentage of normal to provide a simple and efficient measure of patient outcome (Gowd et al., 2019). Patients will be asked the following question: "How would you rate your affected shoulder today as a percentage of normal (0% to 100% scale with 100% being normal)?"

    Measured: baseline pre-operative

  7. SANE Score

    The Single Assessment Numeric Evaluation (SANE) score is a single question that asks patients to rate their affected shoulder as a percentage of normal to provide a simple and efficient measure of patient outcome (Gowd et al., 2019). Patients will be asked the following question: "How would you rate your affected shoulder today as a percentage of normal (0% to 100% scale with 100% being normal)?"

    Measured: 3 months post-operative

  8. SANE Score

    The Single Assessment Numeric Evaluation (SANE) score is a single question that asks patients to rate their affected shoulder as a percentage of normal to provide a simple and efficient measure of patient outcome (Gowd et al., 2019). Patients will be asked the following question: "How would you rate your affected shoulder today as a percentage of normal (0% to 100% scale with 100% being normal)?"

    Measured: 6 months post-operative

  9. SANE Score

    The Single Assessment Numeric Evaluation (SANE) score is a single question that asks patients to rate their affected shoulder as a percentage of normal to provide a simple and efficient measure of patient outcome (Gowd et al., 2019). Patients will be asked the following question: "How would you rate your affected shoulder today as a percentage of normal (0% to 100% scale with 100% being normal)?"

    Measured: 12 months post-operative

  10. SANE Score

    The Single Assessment Numeric Evaluation (SANE) score is a single question that asks patients to rate their affected shoulder as a percentage of normal to provide a simple and efficient measure of patient outcome (Gowd et al., 2019). Patients will be asked the following question: "How would you rate your affected shoulder today as a percentage of normal (0% to 100% scale with 100% being normal)?"

    Measured: 24 months post-operative

  11. EQ5D-3L

    The EQ-5D is valid, reliable, responsive PROM used to document overall wellness based on 5 dimensions: mobility, self-care, usual activities, pain, anxiety/depression (Herdman et al., 2011). A single value is calculated (the value index), which indicates how good or bad a patient's health state is relative to a specified population. There are two components, VAS for general health, with 0 minimum and 100 maximum, with higher scores being more positive. The second component is a 25 point scale with minimum 5 and maximum 25 wit h lower scores more positive.

    Measured: baseline, pre-operative

  12. EQ5D-3L

    The EQ-5D is valid, reliable, responsive PROM used to document overall wellness based on 5 dimensions: mobility, self-care, usual activities, pain, anxiety/depression (Herdman et al., 2011). A single value is calculated (the value index), which indicates how good or bad a patient's health state is relative to a specified population. There are two components, VAS for general health, with 0 minimum and 100 maximum, with higher scores being more positive. The second component is a 25 point scale with minimum 5 and maximum 25 wit h lower scores more positive.

    Measured: 3 months, post-operative

  13. EQ5D-3L

    The EQ-5D is valid, reliable, responsive PROM used to document overall wellness based on 5 dimensions: mobility, self-care, usual activities, pain, anxiety/depression (Herdman et al., 2011). A single value is calculated (the value index), which indicates how good or bad a patient's health state is relative to a specified population. There are two components, VAS for general health, with 0 minimum and 100 maximum, with higher scores being more positive. The second component is a 25 point scale with minimum 5 and maximum 25 wit h lower scores more positive.

    Measured: 6 months, post-operative

  14. EQ5D-3L

    The EQ-5D is valid, reliable, responsive PROM used to document overall wellness based on 5 dimensions: mobility, self-care, usual activities, pain, anxiety/depression (Herdman et al., 2011). A single value is calculated (the value index), which indicates how good or bad a patient's health state is relative to a specified population. There are two components, VAS for general health, with 0 minimum and 100 maximum, with higher scores being more positive. The second component is a 25 point scale with minimum 5 and maximum 25 wit h lower scores more positive.

    Measured: 12 months, post-operative

  15. EQ5D-3L

    The EQ-5D is valid, reliable, responsive PROM used to document overall wellness based on 5 dimensions: mobility, self-care, usual activities, pain, anxiety/depression (Herdman et al., 2011). A single value is calculated (the value index), which indicates how good or bad a patient's health state is relative to a specified population. There are two components, VAS for general health, with 0 minimum and 100 maximum, with higher scores being more positive. The second component is a 25 point scale with minimum 5 and maximum 25 wit h lower scores more positive.

    Measured: 24 months, post-operative

  16. Range of Motion

    For both shoulders, forward flexion and external rotation at 0 and 90 degrees abduction will be measured with a goniometer and reported in degrees.

    Measured: baseline, pre-surgery

  17. Range of Motion

    For both shoulders, forward flexion and external rotation at 0 and 90 degrees abduction will be measured with a goniometer and reported in degrees.

    Measured: 3 months, post-operative

  18. Range of Motion

    For both shoulders, forward flexion and external rotation at 0 and 90 degrees abduction will be measured with a goniometer and reported in degrees.

    Measured: 6 months, post-operative

  19. Range of Motion

    For both shoulders, forward flexion and external rotation at 0 and 90 degrees abduction will be measured with a goniometer and reported in degrees.

    Measured: 12 months, post-operative

  20. Range of Motion

    For both shoulders, forward flexion and external rotation at 0 and 90 degrees abduction will be measured with a goniometer and reported in degrees.

    Measured: 24 months, post-operative

  21. Isometric Strength

    Measured using a hand-held dynamometer, in flexion, abduction, and external rotation

    Measured: baseline, pre-surgery

  22. Isometric Strength

    Measured using a hand-held dynamometer, in flexion, abduction, and external rotation

    Measured: 3 months, post-operative

  23. Isometric Strength

    Measured using a hand-held dynamometer, in flexion, abduction, and external rotation

    Measured: 6 months, post-operative

  24. Isometric Strength

    Measured using a hand-held dynamometer, in flexion, abduction, and external rotation

    Measured: 12 months, post-operative

  25. Isometric Strength

    Measured using a hand-held dynamometer, in flexion, abduction, and external rotation

    Measured: 24 months, post-operative

  26. ASES Score

    The ASES is a patient-reported upper extremity-specific functional assessment tool and is scored out of a maximum 100 points, where 100 represents maximum function and no pain (Richards et al., 1994). It has a pain component measured on a visual analog scale as well as ten Likert-scale questions on function (e.g., put on a coat, sleep on affected side). The ASES is reliable and is validated for this population and is one of the most commonly used shoulder outcomes in North America.

    Measured: baseline, pre-operative

  27. ASES Score

    The ASES is a patient-reported upper extremity-specific functional assessment tool and is scored out of a maximum 100 points, where 100 represents maximum function and no pain (Richards et al., 1994). It has a pain component measured on a visual analog scale as well as ten Likert-scale questions on function (e.g., put on a coat, sleep on affected side). The ASES is reliable and is validated for this population and is one of the most commonly used shoulder outcomes in North America.

    Measured: 3 months, post-operative

  28. ASES Score

    The ASES is a patient-reported upper extremity-specific functional assessment tool and is scored out of a maximum 100 points, where 100 represents maximum function and no pain (Richards et al., 1994). It has a pain component measured on a visual analog scale as well as ten Likert-scale questions on function (e.g., put on a coat, sleep on affected side). The ASES is reliable and is validated for this population and is one of the most commonly used shoulder outcomes in North America.

    Measured: 6 months, post-operative

  29. ASES Score

    The ASES is a patient-reported upper extremity-specific functional assessment tool and is scored out of a maximum 100 points, where 100 represents maximum function and no pain (Richards et al., 1994). It has a pain component measured on a visual analog scale as well as ten Likert-scale questions on function (e.g., put on a coat, sleep on affected side). The ASES is reliable and is validated for this population and is one of the most commonly used shoulder outcomes in North America.

    Measured: 12 months, post-operative

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted28 Jan 2021
  2. Study start1 Nov 2021
  3. Primary completion1 Mar 2030 (estimated)
  4. Study completion1 Mar 2030 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
This is a double-blinded randomized clinical trial comparing two groups, RTSA with and RTSA without subscapularis repair. Eighty-four participants will be randomized at a 1:1 ratio in blocks of 12. All participants will be recruited from the patient populations of six fellowship trained upper extremity orthopaedic surgeons at initial consult. Patients will be randomized intraoperatively using a telephone/web-based system.
Masking
Double blind
Who is masked
Participant, Outcomes assessor
Enrolment
284 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04728282
Sponsor's protocol ID
RSASUB-16-01-2021
Status last verified
Oct 2026
First submitted
22 Jan 2021
Last updated
27 Oct 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A study testing RTSA with subscapularis repair and RTSA without subscapularis repair in people with Reverse Shoulder Arthroplasty, run by Panam Clinic at 6 sites in Canada.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 27 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 6 sites in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Heather Normand (204-925-7469, hnormand3@panamclinic.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

ASES Score (time frame: 24 months post-operative). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Oct 2026.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in