Rogerius (before 1140 – c. 1195), also called Rogerius Salernitanus, Roger Frugard, Roger Frugardi, Roggerio Frugardo, Rüdiger Frutgard and Roggerio dei Frugardi, was a Salernitan surgeon who wrote a work on medicine entitled Practica Chirurgiae ("The Practice of Surgery") around 1180 (sometimes dated earlier to 1170; sometimes later, to 1230).
He recommended a dressing of egg-albumen for wounds of the neck, and did not believe that nerves, when severed, could be regenerated (consolidari), though he thought they may undoubtedly be reunited (conglutinari).
[2] Rogerius' work was the first medieval text on surgery to dominate its field in all of Europe, and it was used in the new universities in Bologna and Montpellier.
Rogerius' work maintained the strong tradition of Salerno's medical school, in existence since the ninth century, which pioneered the study of anatomy and surgery.
Surgery had a lower status than pure medicine, beginning as a craft tradition until Rogerius composed his treatise, which laid the foundation for the species of the occidental surgical manuals, influencing them up to modern times.