This paper embodies the clinical experience obtained from plastic operations on fifteen patients with depressions in the skull of varying degree. In seven of the cases there had been brain abscess or meningitis and the dura had been opened widely at the time of operation, exposing the brain. In three of the cases there was osteomyelitis of the frontal bone and the bone had been removed, exposing the dura, but the dura itself was not opened. In the remaining five cases there were depressed fractures of the frontal bone with the dura uninjured or only slightly lacerated.
Nine of the fourteen cases, from the standpoint of deformity, presented large depressions in the frontal region due to the removal of the bony brow, one or both frontal sinuses and an adjacent area of frontal bone. The remaining six cases exhibited less extensive depressions resulting from the removal of smaller areas of