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Updated: Mar 31, 2026

Reverse Total Shoulder Arthroplasty

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

Linked shoulder replacement: current design problems and a new design proposal.

Ali Abdullah Mohammed¹, Simon Peter Frostick²

¹Royal Liverpool University, Liverpool, L69 3GA, UK. ali5214954@yahoo.com.

Musculoskeletal Surgery

|October 31, 2015

Summary

Linked shoulder replacement implants can fail due to design flaws, necessitating early revision surgery. A new, more stable implant design is proposed to improve durability in complex shoulder revision cases.

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Area of Science:

Orthopedic Surgery
Biomedical Engineering
Implant Design

Background:

Totally constrained shoulder replacement with linked components is used for complex shoulder revision and post-tumor resection reconstruction.
Existing linked component designs present challenges and potential for mechanical failure.

Purpose of the Study:

To analyze immediate postoperative complications associated with linked constrained shoulder implants.
To propose an improved implant design to mitigate mechanical failures and reduce revision rates.

Main Methods:

Review of complications in patients undergoing linked shoulder replacement at the center.
Description of two specific cases of early implant disconnection requiring revision surgery.

Main Results:

Keywords:

Constrained shoulder arthroplasty Linked shoulder Revision shoulder replacement Upper limb reconstruction

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Two instances of early revision were required due to implant disconnection.
Complications included glenoid dislodgement and linkage mechanism disengagement.

Conclusions:

Current linked shoulder replacement designs require enhancement for improved stability.
A novel design is proposed to increase implant durability and decrease the need for revision surgery in complex cases.