Radiographic and Clinical Outcomes After Short-Stem Reverse Shoulder Arthroplasty

NCT07651215 | Enrolling By Invitation

• 1 other identifier: 1035/2026
• Study Type: observational
• Target: 50
• Locations: 1 country
• Sites: 1

Brief Summary

Reverse total shoulder arthroplasty (RTSA) has become increasingly common in recent years due to expanding indications and improved surgical techniques. Short-stem humeral implants have gained attention because they preserve bone stock, allow metaphyseal fixation, and facilitate potential revision procedures. The aim of this study is to evaluate radiographic and clinical outcomes following reverse shoulder arthroplasty with a short humeral stem after a minimum follow-up of two years. Patients who underwent RTSA at the Department of Orthopedics at Ordensklinikum Linz will be invited for clinical and radiographic follow-up. Clinical outcomes will be assessed using established shoulder scores including the Constant Score, the American Shoulder and Elbow Surgeons (ASES) score, and the Simple Shoulder Test (SST). Radiographic evaluation will focus on humeral-sided changes such as stress shielding, radiolucent lines, osteolysis, and fractures. Patient satisfaction will additionally be assessed using visual analogue scales and patient-reported outcome measures. Demographic variables, comorbidities, and implant-related characteristics will be collected to allow descriptive evaluation of factors potentially associated with clinical and radiographic outcomes.

Conditions

Shoulder Arthroplasty; Shoulder Joint Disease; Reverse Shoulder Prosthesis

Outcome Measures

Primary Outcomes (1)

• Radiographic Changes of the Humeral Component

  Assessment of humeral-sided radiographic changes including: Stress shielding Radiolucent lines Osteolysis Periprosthetic fractures Measured using standardized radiographs at follow-up.

  ≥2 years postoperatively

Secondary Outcomes (4)

• Constant-Murley Score (Constant Score)

  up to 3 years postoperatively

• American Shoulder and Elbow Surgeons Score (ASES)

  up to 3 years postoperatively

• Simple Shoulder Test Score (SST)

  up to 3 Years Postoperatively

• Return to Sport Rate (RTS)

  up to 3 years postoperatively

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

The study population consists of adult patients who underwent reverse total shoulder arthroplasty with a short humeral stem at the Department of Orthopedics, Ordensklinikum Linz, Austria. All eligible patients who received this procedure at least two years prior to enrollment will be invited for a clinical and radiographic follow-up examination. Participants are identified through institutional medical records and include both male and female patients. Only patients who provide written informed consent will be included in the study.

You may qualify if:

• Reverse shoulder arthroplasty with short humeral stem
• Surgery performed at Ordensklinikum Linz
• Minimum postoperative follow-up of 2 years
• Written informed consent

You may not qualify if:

• Perioperative complications not related to the surgical procedure
• Lack of consent for study participation

Sponsors & Collaborators

• Krankenhaus Barmherzige Schwestern Linz: lead

Study Sites (1)

Ordensklinikum Linz - Barmherzige Schwester

Linz, 3340, Austria

Location

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: OTHER
• Target Duration: 2 Years
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: June 1, 2026
• First Posted: June 16, 2026
• Study Start: February 1, 2026
• Primary Completion (Estimated): December 31, 2026
• Study Completion (Estimated): December 31, 2026
• Last Updated: June 16, 2026

Record last verified: 2026-06

Locations

AU (1)