One look at Thurman Thomas' achievements and you cannot help but be impressed.

The former Buffalo Bills running back rushed for over 12,000 yards and 65 touchdowns in his career while averaging 4.2 yards per carry. Thomas was more than just a threat on the ground. The back was also a threat in the receiving game. He caught 472 passes in his career for 4,458 yards and 23 touchdowns.

His play also earned him many accolades. Thomas was named to the Pro Bowl five times and was a first-team All-Pro three times in his career. He was also named NFL MVP once his career. All of Thomas' accomplishments and achievements ultimately led to the running back being enshrined in the Pro Football Hall of Fame in 2007.

Some news that Thomas shared on social media recently should have fans even more impressed with his career. It turns out that Thomas played his entire career on a partially torn ACL.

A fan sent Thomas a question asking if he was wearing an ice pack in a picture during his time at Oklahoma State. Thomas told the fan that it was actually a brace that he wore after tearing his ACL in 1986. The back would undergo an arthroscopic procedure that year, but avoided major knee surgery. Thomas said he wore the brace as a way to avoid having major surgery and missing time.

When a fan asked how long Thomas played with the torn ACL, Thomas responded by saying he played the rest of his career with the injury. He'd later add that his ACL was about 85 percent torn.

Rest of my career https://t.co/qSAbLw85C9 — Thurman Thomas (@thurmanthomas) July 18, 2018

Looking back at Thomas' career, it's amazing to consider just how elusive the back was on the field and how durable he was despite the injury. Thomas appeared in 14 regular season games or more in his first 11 seasons with Buffalo.