Comparing the surgical and non-surgical treatment of acute shoulder joint dislocations

ISRCTN ISRCTN92265154
DOI https://doi.org/10.1186/ISRCTN92265154
Submission date
20/06/2020
Registration date
06/08/2020
Last edited
01/09/2023
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Musculoskeletal Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Background and study aims
Acromioclavicular (shoulder) joint dislocations are common shoulder injuries and are classified according to Rockwood. Type 3 injuries are defined as complete separations with tearing of both ligaments. The current literature is in favour of non-surgical treatment of Rockwood type 3 injuries. However, larger series of high evidence dealing with isolated type 3 injuries are lacking. The aim of this study is to conduct a multicentre, randomized trial comparing non-surgical and surgical treatment. The hypothesis is that surgical treatment in acute ACJ dislocations type 3 outperforms non-surgical treatment in terms of functional outcome after a follow-up period of 2 years.

Who can participate?
Patients aged between 18 and 65 years suffering from an acute (within 3 weeks after the trauma) acromioclavicular joint dislocation Rockwood type 3.

What does the study involve?
The study involves regular radiological and clinical follow up evaluation at baseline, 6 weeks, 3 months, 6 months, 12 months, and 24 months. Two treatment modalities are compared after randomized allocation of the study participants. The functional outcome of non-surgical and surgical treatment are evaluated using specific shoulder scores and the pain level is recorded at all timepoints. Radiological parameters are measured including the coracoclavicular distance and posttraumatic osteoarthritis or heterotopic ossifications.

What are the possible benefits and risks of participating?
All patients undergo standardized state of the art medical treatment when participating. Since the best treatment option for acute Rockwood type 3 injuries is still not determined, there is no benefit or risk of participating. After detailed information about kind of injury and possible treatment options patients are included after obtaining written informed consent.

Where is the study run from?
The study is allocated in 4 study centers. Three of them are located in Germany, one in Austria.

When is the study starting and how long is it expected to run for?
July 2010 to March 2018

Who is funding the study?
There is no outside funding of the study.

Who is the main contact?
Mark Tauber, MD
tauber@atos.de

Contact information

Prof Mark Tauber
Scientific

ATOS Clinic Munich
Effnerstrasse 38
Munich
81925
Germany

Phone +49 89 204000210
Email tauber@atos.de
Prof Mark Tauber
Public

ATOS Clinic Munich
Effenrstrasse 38
Munich
81925
Germany

Phone +49 89 204000210
Email tauber@atos.de

Study information

Study designMulticenter interventional randomized controlled trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment
Participant information sheet ISRCTN92265154_PIS_v1.0_German.pdf
Scientific titleNo difference between surgical and non-surgical treatment of acute acromioclavicular Rockwood type III injuries - a prospective, multicentric randomized trial
Study objectivesSurgical treatment in acute acromioclavicular joint (ACJ) dislocations Rockwood type III outperforms non-surgical treatment in terms of functional outcome after a follow-up (FU) period of 2 years.
Ethics approval(s)Approved 12/09/2010, Salzburg Ethics Committee (Ethical Committe for Salzburg County, Michael-Pacher-Strasse 36 (EG, Zi.48), 5020 Salzburg, Austria; no telephone number provided; ethikkommission@salzburg.gv.at), ref: 1277
Health condition(s) or problem(s) studiedAcute acromioclavicular joint dislocations Rockwood type 3
InterventionSurgical versus non-surgical treatment of acute acromioclavicular joint dislocations Rockwood type 3 will be compared.
Non-surgical treatment includes adequate pain management using non-steroidal antirheumatics for several days, accompanied by local ice therapy and immobilization of the injured shoulder using a simple sling. Duration of immobilization is based on the patient’s pain level and lasts usually between 10 to 14 days. Physical rehabilitation measures are initiated under a physiotherapist’s guidance and continued until free ROM is achieved.
Surgical treatment includes 4 different surgical techniques, one for each study center. These are the hook plate (center 1), the Tight Rope device (Arthrex, Naples, FL, USA) implanted arthrscopically in a double fashion (center 2), in a single fashion (center 3) and mini-open in a double fashion (center 4).
The postoperative protocol is the same for all techniques including pain management, local ice therapy, and immobilization for 6 weeks in a simple sling. During this period only passive motion and exercises until 90° of glenohumeral abduction are allowed. Actively assisted shoulder motion in all planes follows for the next 6 weeks starting with shoulder sports after 4 months.

After obtaining the patients’ written consent 1:1 allocation to either surgical or non-surgical treatment was performed by the treating surgeon at each center based on a pre-specified list generated by the principal investigator using a web-based internet randomizer [www.randomize.net].
Intervention typeProcedure/Surgery
Primary outcome measureThe functional outcome using the Constant score is measured at baseline, 6 weeks, 3 months, 6 months, 12 months, and 24 months
Secondary outcome measuresRecovery measured using the following measures:
1. Pain measured using a numeric rating scale at baseline, 6 weeks, 3 months, 6 months, 12 months, and 24 months
2. The Acromioclavicular Joint Injury Score measured at baseline, 6 weeks, 3 months, 6 months, 12 months, and 24 months
3. The Taft score measured at baseline, 6 weeks, 3 months, 6 months, 12 months, and 24 months
4. The American Shoulder and Elbow Surgeon's score measured at baseline, 6 weeks, 3 months, 6 months, 12 months, and 24 months
5. The coracoclavicular distance (in milimeters) measured at baseline, 6 weeks, 3 months, 6 months, 12 months, and 24 months
Overall study start date01/07/2010
Completion date31/03/2018

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
SexBoth
Target number of participants90
Key inclusion criteria1. Presence of an acute (within 3 weeks after trauma) ACJ injury
2. ACJ dislocation type III according to the classification of Rockwood defined by an increase of the coracoclavicular distance of 25-100% compared to the contralateral side on a panorama stress-view with 10kg of load on the hanging arm
3. Aged between 18 and 65 years
4. Written informed consent to participate in the study
Key exclusion criteria1. Patient’s request for reconstruction out of cosmetic purposes
2. Pre-existing shoulder- or ACJ-related pathologies of the affected or contralateral shoulder
3. Acute or chronic infections of the involved joint
4. Neurological or musculoskeletal diseases affecting the shoulder
5. Inadequate compliance
6. Inability to participate in the regular FUs
7. Abuse of drugs or alcohol
8. Worker’s compensation claim
Date of first enrolment01/01/2011
Date of final enrolment31/03/2016

Locations

Countries of recruitment

  • Austria
  • Germany

Study participating centres

ATOS clinic Munich
Effnerstrasse 38
Munich
81925
Germany
University Clinic Charitè
Department of Orthopaedics and Trauma Surgery
Charitèplatz 1
Berlin
10117
Germany
University clinic Mannheim
Department of Orthopaedics and Trauma Surgery
Theodor-Kutzer-Ufer 1 - 3
Mannheim
68167
Germany
University clinic Salzburg
Department of Orthopaedics and Trauma Surgery
Muellner Hauptstrasse 48
Salzburg
5020
Austria

Sponsor information

Paracelsus Medical University
University/education

Strubergasse 20
Salzburg
5020
Austria

Phone +43 662 2420-80205
Email claudia.melchart@pmu.ac.at
Website http://www.pmu.ac.at/
ROR logo "ROR" https://ror.org/03z3mg085

Funders

Funder type

Other

Investigator initiated and funded

No information available

Results and Publications

Intention to publish date01/08/2020
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryStored in repository
Publication and dissemination planPlanned publication in a high-impact peer-reviewed journal.
IPD sharing planThe datasets generated during and/or analysed during the current study will be stored in a non-publically available repository.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Participant information sheet version v1.0 06/08/2020 No Yes
Results article 25/08/2023 01/09/2023 Yes No

Additional files

ISRCTN92265154_PIS_v1.0_German.pdf
Uploaded 06/08/2020

Editorial Notes

01/09/2023: Publication reference added.
06/08/2020: Internal review.
06/08/2020: The participant information sheet has been uploaded.
13/07/2020: Trial’s existence confirmed by Land Salzburg ethics board.