Michael J. Fox has suffered from a number of injuries as a result of his Parkinson's disease

which he was diagnosed with in 1991 at age 29

the actor revealed in an interview with Variety this week.

The 61-year-old "Back to the Future" star opened up about his battle with the disease

explaining the injuries he has gotten from losing his balance. 

The neurological disorder causes unintended stiffness

shakiness and difficulty with coordination, and worsens over time, according to the National Institutes of Health.

"I broke this shoulder — had it replaced. I broke this elbow. I broke this hand

I had an infection that almost cost me this finger. I broke my face.

I broke this humerus," Fox told Variety.