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CompletedNCT03474445Updated Apr 6, 2022

Comparison of Two Volar Plating Systems for Distal Radius Fractures

An interventional study of Volar Plate Osteosynthesis Aptus 2.5 and Volar Plate Osteosynthesis Inteos 2.5 in Distal Radius Fracture, sponsored by Medical University of Vienna. Completed at 1 site in Austria. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2022-04-06.

Sponsored by Medical University of Vienna · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 1 year after the study started (first participant enrolled Mar 2017, registered Mar 2018).
Phase
Not applicable
Study type
Interventional
Enrollment
106
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
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Study summary

We plan to compare 2 types of plating systems for volar plating of distal radius fractures (Aptus 2.5® Medartis AG, Basel, Switzerland vs. INTEOS 2.5® - Hofer Medical GmbH and Co KG, Austria) in a prospective single-blinded controlled clinical trial.

Read the detailed description

This study represents a prospective randomized clinical trial comparing two different systems of volar plate osteosynthesis in patients with distal radius fractures.

Patients meeting the inclusion criteria will be enrolled in the present study provided they give their consent. Informed written consent will be obtained. Envelopes will be prepared containing equal number of cards representing either the conventional or the novel plating syste. On the morning of the surgery a randomly picked envelope decides allocation one of the study groups. Patients will be blinded to treatment until completion of the study. Patients allocated to the control group receive Aptus 2.5® volar plate for distal radius fractures (Medartis AG, Basel, Switzerland), while patients in the study group will receive the plating system INTEOS 2.5® (Hofer GmbH and Co KG, Austria). In the control group, the pronator quadratus muscle will be cut prior mounting of the plate, while in the treatment group the plate will be inserted underneath the pronator quadratus leaving the muscle intact.

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Conditions studied

  • Distal Radius Fracture

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03

In context

Wrist Fractures

329 studies on the registry are indexed under Wrist Fractures; 69 are open to participants now.

This study's enrollment of 106 is above the median of 63 across 267 interventional studies indexed under Wrist Fractures.

Browse Wrist Fractures studies →

Lead sponsor

Medical University of Vienna is the lead sponsor of 1,105 studies on the registry; 182 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • " Distal radius fracture, Type A2, A3, B1, B2, B3, C1, C2 (according to AO Müller classification3) " Patient age between 18 and 75 years " Closed fracture or I° open fractures (according to Gustilo-Anderson classification6) " Agreement of patient to participate and written informed consent

Exclusion criteria

Exclusion Criteria:

  • " Polytraumatized patients " Severe systemic disorder (ASA 3) " New and/or preexisting fracture/Injury of contralateral forearm " II° and III° open fractures (according to Gustilo-Anderson classification6) " Associated injuries of the ipsilateral wrist (e.g. scapholunate dissociation, concomitant fractures) " Non-compliance to postoperative protocol (e.g. physiotherapy) " Delayed definitive surgical treatment of more than 14 days after injury " Change from temporary procedure (e.g. Fixateur externe) " Complex regional pain syndrome (CRPS, M.Sudeck) " Loss to follow-up
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
106 participants (actual)

Study arms

  • Active comparator
    Control group

    Volar Plate Osteosynthesis Aptus 2.5

    Procedure: Volar Plate Osteosynthesis Aptus 2.5

  • Active comparator
    Study Group

    Volar Plate Osteosynthesis Inteos 2.5

    Procedure: Volar Plate Osteosynthesis Inteos 2.5

Interventions

  • ProcedureVolar Plate Osteosynthesis Aptus 2.5

    Volar plating of distal radius fracture. Device: Aptus 2.5

    Also known as: Henry approach, cutting of pronator quadratus

  • ProcedureVolar Plate Osteosynthesis Inteos 2.5

    Volar plating of distal radius fracture. Device: Inteos 2.5

    Also known as: Henry approach, preservation of pronator quadratus

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What researchers measure

Primary outcomes

  1. Patient rated wrist evaluation

    Outcome score based on a standardised questionnaire, 15 items, range 0-100, 0 =best possible score, 100=worst possible score

    Time frame: 12 months

Secondary outcomes

  1. Mayo wrist score

    Function-based evaluation of the wrist, range 0-100, 90-100=very good, 80-89=good, 65-79=satisfying, \<65=poor

    Time frame: 8 weeks, 3 months, 6 months, 12 months

  2. Radiological Outcome

    x-ray based outcome of plate osteosynthesis (including ap and volar inclination angles, joint congruency, ulna length). Measurements will be performed on digitalised radiographs with IMPAX viewer (Agfa Ges.m.bH)

    Time frame: 2weeks, 4 weeks, 8 weeks, 3 months, 6 months, 12 months

  3. strength measurement

    dynamometer-based strength evaluation

    Time frame: 4 weeks, 8 weeks, 3 months, 6 months, 12 months

  4. Volumetric evaluation

    With a standardised device using water displacement wirst swelling will be assessed.

    Time frame: 4 weeks, 8 weeks, 3 months, 6 months, 12 months

  5. Disabilities of the Arm, Shoulder and Hand, Outcome Score - DASH

    patient-based standardised questionnaire, 30 items, range 0-100, 0=best outcome, 100=worst outcome

    Time frame: 4 weeks, 8 weeks, 3 months, 6 months, 12 months

  6. Patient rated wrist evaluation

    Outcome score based on a standardised questionnaire, 15 items, range 0-100, 0 =best possible score, 100=worst possible score

    Time frame: 4 weeks, 8 weeks, 3 months, 6 months

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Study locations

1 site
  • Medical Universtiy of Vienna
    Vienna, A-1090, Austria
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References and documents

Publications

  • Thalhammer G, Hruby LA, Dangl T, Liebe J, Erhart J, Haider T. Does the pronator-sparing approach improve functional outcome, compared to a standard volar approach, in volar plating of distal radius fractures? A prospective, randomized controlled trial. J Orthop Traumatol. 2023 Apr 28;24(1):16. doi: 10.1186/s10195-023-00700-y. PubMed 37118158 ↗

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 6, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03474445
Responsible party
Thomas Haider (Principal Investigator, Medical University of Vienna) — Principal investigator
First posted
Mar 22, 2018
Start date
Mar 1, 2017
Primary completion
Nov 30, 2021
Completion
Feb 28, 2022
Last update
Apr 6, 2022

Study contacts

Thomas Haider, M.D., Ph.D.
principal investigator · Medical University of Vienna

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2022. You cannot join it, but the record below documents what was studied.

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