The radial nerve is one of those front-end nerves that can make a horse look lazy, clumsy, resistant, or weak… when really the limb just is not getting clean instructions.

This nerve has a huge job in how the horse organizes the shoulder, elbow, forearm, knee, and lower limb. It helps the front leg reach, support, extend, and carry weight without the horse dumping into the chest or bracing through the shoulder.

You may see a horse that trips more than usual, drags a toe, shortens the front stride, leans into the hand, or feels like the shoulder keeps tightening no matter how many times you work on it. Sometimes they just look like they have lost confidence in the front end. Not dramatic. Not always lame. Just… not quite right.

The radial nerve does not just affect one little spot. It runs through a busy mechanical neighborhood, and when it is unhappy, the horse may compensate through the thoracic sling, triceps, shoulder, carpus, and even the way the hoof loads the ground.

Sometimes the shoulder is not the problem. Sometimes it is just the place the nervous system finally got loud enough for us to notice.


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