Surgery Chair

The Surgery chair is a settlement object added in the Vault-Tec Workshop add-on of Fallout 4.

Description
Surgery chairs can be built in any settlement, but require a Settler to operate it. The Sole Survivor can then use it to perform reconstructive surgery on themselves without needing to visit Diamond City. All sessions are free of charge.

Behind the scenes
Early descriptions of the add-on implied that surgery chairs could also be used to customize the appearance of other settlers. However, this detail was omitted from the final version for unknown reasons.