Alright guys, it’s time to go in-depth with the extensor muscles. I’m assuming you already watched Part 1, so let’s jump right in.
Squished between the ridge muscles and extensor digitorum is the “floating muscle,” extensor carpi radialis brevis. The ridge muscle it’s touching is actually named extensor carpi radialis longus. Similar names, similar function, sitting side by side. Anyway, the extensor carpi radialis brevis originates from the… watch the video