Design Development and Evaluation of A Prototype Modular Humeral Component for Shoulder Arthroplasty

Vol 28 | Issue 1 | Sep 2018 | page: 19-24 | Amitava Narayan Mukherjee, Tim Drew


Authors: Amitava Narayan Mukherjee [1], Tim Drew [1]

[1] Department of Orthopaedic & Trauma Suregry, TORT Centre, Ninewells
Hospital & Medical School, University of Dundee.

Address of Correspondence
Dr. Amitava Narayan Mukherjee
Department of Orthopaedic & Trauma Suregry, TORT Centre, Ninewells
Hospital & Medical School, University of Dundee.


Design Development and Evaluation of A Prototype Modular Humeral Component for Shoulder Arthroplasty

Abstract

Introduction: The complex proximal humeral pathologies are becoming challenging due to the increased functional demands of patients. The use of a modular stem system in primary shoulder arthroplasty provides the opportunity for precise placement of the humeral head and neck length adjustments, meticulous repair of the rotator cuff, tuberosities and proper soft tissue balancing. It also allows the conversion of shoulder hemiarthroplasty (SHA) to total shoulder arthroplasty (TSA) and TSA to reverse shoulder arthroplasty (RSA), without changing the well-fixed stem and thus minimizing intraoperative complications and a satisfactory clinical outcome.
Methods & Materials: This design process included a combination of 2D pencil sketches concepts, 3D CAD model
design, computer simulation in 3D bone model and lastly 3D printing with simulated sawbones models and cadaveric implantation.
Results: The sawbone and cadaveric implantation were successful in providing a practical and realistic concept evaluation of the shoulder modular stem implantation procedure. Optimum range of shoulder motion with optimum
balance between the prosthesis and the soft tissue was obtained.
Conclusion: This prototype modular humeral prosthetic design could play an essential role in primary shoulder
arthroplasty to replicate anatomical reconstruction in a wide range of patient profiles and in revision scenarios.
Key Words: Modular humeral component for shoulder arthroplasty.


References

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How to Cite this Article: Mukherjee AN, Drew T. Design Development and Evaluation of a Prototype Modular Humeral Component for Shoulder Arthroplasty. International Journal of Orthopaedic Surgery; July – Dec 2018; 28(1): 19-24 .

 


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