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Related Experiment Video

Updated: Mar 15, 2026

Surgical Fixation of Sternal Fractures: Preoperative Planning and a Safe Surgical Technique Using Locked Titanium Plates and Depth Limited Drilling
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Four corner fusion using a multidirectional angular stable locking plate.

Tahseen Chaudhry1, Michelle Spiteri1, Dominic Power1

  • 1Tahseen Chaudhry, Michelle Spiteri, Dominic Power, Mark Brewster, Department of Hand Surgery, Queen Elizabeth Hospital, Birmingham B15 2TH, United Kingdom.

World Journal of Orthopedics
|September 14, 2016
PubMed
Summary

The Medartis Aptus system for wrist four corner fusion demonstrated comparable short-term outcomes to other fixation methods. This study reviewed 17 procedures, finding a mean union time of 6 months with good functional results.

Keywords:
ArthrodesisLocking platePartial fusionScaphoidectomyWrist surgery

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Lateral-PLIF for Lumbar Spinal Arthrodesis: A Detailed Step-By-Step Surgical Technique

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Area of Science:

  • Orthopedic surgery
  • Hand and wrist surgery

Background:

  • Four corner arthrodesis is a surgical procedure to fuse the scaphoid, lunate, triquetrum, and capitate bones in the wrist.
  • The Medartis Aptus plating system offers a combination of compression and variable angle locking screws for wrist fusion.

Purpose of the Study:

  • To evaluate the clinical and radiographic outcomes of the Medartis Aptus plating system in wrist four corner arthrodesis.
  • To assess the efficacy and safety of this specific fixation method.

Main Methods:

  • Retrospective review of 17 wrist four corner fusions using the Medartis Aptus system in 16 patients.
  • Procedures performed between May 2010 and June 2014.
  • Primary outcome: radiographic and clinical union; secondary outcomes: DASH score, grip strength, range of motion.

Main Results:

  • Mean union time was 6 months, with a mean follow-up of 20.6 months.
  • Post-union DASH score averaged 36, grip strength 27 kg, and range of motion 30° flexion/31° extension.
  • Two non-unions occurred, requiring revision; all patients achieved restored scapholunate angle without dorsal impingement.

Conclusions:

  • The Medartis Aptus plating system provides comparable short-to-medium term results for four corner wrist arthrodesis.
  • The system is a viable option for wrist fusion, achieving bony union and functional recovery.