AxonArm Ergo | AxonArm Ergo | Michelangelo/Axon-Bus System | Upper Limb Prosthetics | Prosthetics | Ottobock CA B2B Site
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AxonArm Ergo

Item #: 12K501=M-1
Color number 11.

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The AxonArm Ergo is a manually powered elbow component with electronic lock that adapts the proven strengths of the familiar 12K50 ErgoArm to the new Axon-Bus system.

It is intended exclusively for use with the Michelangelo Hand. Thanks to the electronic lock, unlocking and locking the elbow joint is realised with myoelectric signals picked up by electrodes.

Now all the advantages of the Michelangelo Hand (extraordinary functionality, natural design and trendsetting technology) are now also available to transhumeral amputees.


  • Easy Plug (electronic through connection)
  • Automatic Forearm Balance (AFB)
  • Electronic ratchetless lock
  • Humeral rotation joint (humeral rotation feature)
  • Adjustable friction
  • Forearm can be shortened

Technical data:

  • Weight (without battery): approximately 750 g
  • Power supply: 757B501
  • Battery charger: 757L500

Michelangelo System Brochure

Product Information: (EN)

Published Date: July 1, 2014

12K500 AxonArm Hybrid, 12K501 AxonArm Ergo - Instructions for Use

Instructions for Use: 647G790 (EN/DE/FR/IT/ES/PT/NL/SV/DA/NO/FI/CS)

12K500 / 12K501

Published Date: November 10, 2014

12K500=* AxonArm Hybrid 12K501=* AxonArm Ergo Casting and Lamination Instructions - Technical Information 3.3.6

Product Information: 646T3=3.6 (EN)

Published Date: November 12, 2013

Axon-Bus Prosthetic System - Instructions for use (user)

Instructions for Use: 647D115 (EN)

Published Date: June 30, 2014

12K501=M-S AxonArm Ergo Service - Instructions for Use

Instructions for Use: 647G976 (EN/DE)

Published Date: November 10, 2014

Embrace the Everyday with Michelangelo

Product Information: (EN)

Published Date: November 1, 2018

UL Documentation Packet

Product Information: (EN)

Reimbursement: Documentation Guide

Published Date: February 28, 2020