Sep 19, 2010 9:56 AM EST

Jason LaRue has decided to retire, just over a month after being injured in a scuffle against the Reds.

"I'm done," he says. "It's a simple decision."

LaRue related what he has experienced in nearly six weeks since an Aug. 10 incident in which pitcher Johnny Cueto lashed out during a first-inning scrum against the Great American Ball Park backstop.

Cueto's spikes raked Chris Carpenter's back and found LaRue's face, leaving the Cardinals' backup catcher with a severe concussion that only recently began to abate.

"When it first happened I thought it was just another concussion. I felt within a couple days I would be fine," La Rue recalled. "But I didn't feel good. And for a long time nothing progressed."

Via MLB.com