The Dublin Arm, prosthetic limb 1920s.

The Dublin Arm was invented in 1921, It was a significant advancement in artificial limb technology. It operated using a Bowden cable mechanism, where cables connected to the individuals residual limb enabled hand or hook movements. By contracting specific muscles, the user could control the cables, allowing them to grasp objects and perform various tasks with improved dexterity. This pioneering prosthetic limb set the foundation for future advancements in the field.