MedPath

Comparison of Lateralized RTSA With and Without Subscapularis Repair

Early Phase 1
Recruiting
Conditions
Arthritis Shoulder
Interventions
Procedure: RTSA with subscapularis repair
Procedure: RTSA without subscapularis repair
Registration Number
NCT04728282
Lead Sponsor
Panam Clinic
Brief 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.

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.

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
84
Inclusion Criteria
  • 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
Exclusion Criteria
  • Previous shoulder arthroplasty (hemi-, total shoulder, or RTSA)
  • Avascular necrosis
  • Post-infectious arthritis
  • Proximal humerus fracture
  • Inflammatory arthritis
  • Inability to communicate in English
  • 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

Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Arm && Interventions
GroupInterventionDescription
RTSA with subscapularis repairRTSA with subscapularis repair-
RTSA without subscapularis repairRTSA without subscapularis repair-
Primary Outcome Measures
NameTimeMethod
ASES Score24 months post-operative

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.

Secondary Outcome Measures
NameTimeMethod
EQ5D-3L24 months, post-operative

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.

Range of Motion24 months, post-operative

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

SANE Score24 months post-operative

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)?"

Constant Score24 months post-operative

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.

Isometric Strength24 months, post-operative

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

ASES Score12 months, post-operative

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.

Trial Locations

Locations (1)

Pan Am Clinic

🇨🇦

Winnipeg, Manitoba, Canada

© Copyright 2025. All Rights Reserved by MedPath