Surgical instruments of Guy de Chauliac, nos. 1, 2, 3, and 4 (fourteenth century);
and surgical apparatus of Hans von Gerssdorff, nos. 5, 6 and 7 (fifteenth century)
After plates in Gurlt’s “Geschichte der Chirurgie”


1. Trepan
2. Balista used for extraction of arrows
3. Cauterizing shears with cannula for cauterization of the uvula
4. Bistoury
5. Extension arrangement for reducing upper arm dislocations, called “The Fool”
6. Screwpiece for extending a knee contracture
7. Extension apparatus in the form of armour-arm and armour-leg plates
(“harness instruments”) for contractures of the elbow and knee joints