Corky, a seven-month-old kitten, was born with a congenital deformity called Bilateral Anthrogryposis. This means that Corky’s hind legs are backwards and crisscrossed.

Though Corky was able to get around despite his deformity, a talented orthopedic surgeon named Dr. Dan Burchill invented a surgery to repair Corky’s legs.

Click here to read more about Corky and to see images of this adorable kitty before and after surgery.