The Starfish procedure consists in relocating remaining hand muscles closer to the surface of the skin to better control a myoelectric partial hand prosthesis.

This is a fairly recent procedure (2018) aimed at helping those who lost fingers. The original paper from doctors Glenn Gaston and Bryan Loeffler is here [warning: graphic].

And here’s an article about a veteran who received the procedure in 2022: Charlotte doctors create surgery to help amputee veteran regain control of hand

Finally, here’s the story of one man who also received the procedure in 2024 and rocks a prosthesis with one mechanical Naked Prosthetics MCPDriver prosthesis and 3 powered Össur i-Digits controlled by the relocated hand muscles: Tim Suttles