The effect of reversed shoulder arthroplasty (RSA) on deltoid muscle degeneration - a histological study

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00015778

Enrollment

Registered

2018-10-22

Start date

2010-07-02

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

DEFECTIVE ARTHROPATHY M75.1

Interventions

Group 1: Implantation of a reversed shoulder arthroplasty, harvesting of a deltoid muscle biopsy intraoperatively and after 12 months to determine the development of the mean muscle fibre area. Additi

Eligibility

Sex/Gender

All

Age

65 Years to 99 Years

Inclusion criteria

Inclusion criteria: - Cuff tear arthropathy classified more than grade 2 according to the Hamada classification - conservative treatment of a minimum of 6 months and additionally limited active range of motion (abduction and flexion less than 90°) - availability of the complete data of the CS (Constant Scores), DASH score as well as complete histological analysis of intra- and 12 months postoperative deltoid muscle biopsies

Exclusion criteria

Exclusion criteria: - incomplete data - patients younger than 65 years - relevant glenoid bone loss - post-traumatic conditions - prior open surgery using a delta split approach

Design outcomes

Primary

Measure	Time frame
mean deltoid muscle fibre area after 12 months	—

Secondary

Measure	Time frame
12 months follow up, functional outcome after reversed shoulder arthroplasty	—

Countries

Germany

Contacts

Public ContactStefan Greiner

sporthopaedicum Regensburg/ Straubing

greiner@sporthopaedicum.de0941/ 46392912

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026