Complex sentence: By 1890, Dr. Gillette was Minnesota's first full-time orthopaedist and was an instructor at the University of Minnesota Medical School in what he called "this almost new science" of orthopaedic surgery.
Split into simpler sentences: By 1890, Dr. Gillette was Minnesota's first full-time orthopaedist. He was an instructor at the University of Minnesota Medical School in what he called "this almost new science" of orthopaedic surgery.