The joints in the fingers are one of the examples of condyloid joints. The condyloid joint is formed when a bone with an elliptical end is connected to another bone with an elliptical cup. It allows for rotation in two planes. It is similar to ball and socket, but doesn't allow for full 360 degree rotation.
You should first apologize and say you put a no. 10 scalpel on the tray. Second, you should switch the no. 10 scalpel for a no. 11 scalpel. Then, you can continue the procedure.
