Abstract
1. The insertion of skull calipers is not generally known to be associated with any morbidity or mortality.
2. In the past six years the details of three fatal complications have been collected: there was one case each of cerebral abscess, subdural abscess and extradural abscess.
3. Brief notes of eleven other similar cases, five of cerebral abscess and six of osteomyelitis of the skull, have been supplied by colleagues.
4. The implications of these findings are discussed.