Search results
Results From The WOW.Com Content Network
Trepanning, also known as trepanation, trephination, trephining or making a burr hole (the verb trepan derives from Old French from Medieval Latin trepanum from Greek trúpanon, literally "borer, auger"), [1] [2] is a surgical intervention in which a hole is drilled or scraped into the human skull.
Human skull with evidence of trepanation found at Monte Albán in Oaxaca, Mexico.. Trepanation in Mesoamerica has been practised by a number of pre-Columbian cultures in the Mesoamerican region, dating from at least the mid-Preclassic era (ca. 1500 BCE), and continuing up to the late Postclassic, or ca. 1200 CE.
[17] [20] [22] Several theories question the reasoning behind trepanning; it could have been used to cure certain conditions such as headaches and epilepsy. [23] [24] There is evidence discovered of bone tissue surrounding the surgical hole partially grown back, so therefore survival of the procedure did occur at least on occasion. [17]
It is composed of 270 bones at the time of birth, [2] but later decreases to 206: 80 bones in the axial skeleton and 126 bones in the appendicular skeleton. 172 of 206 bones are part of a pair and the remaining 34 are unpaired. [3] Many small accessory bones, such as sesamoid bones, are not included in this.
These pits were filled with ash, stones and potsherds. Some of the human skulls found here had trepanning (bored hole) marks. In many pits, bones of dogs and antlered deer were found along with human skeletons. The skeletons of humans were found in the burial pits in a sitting position along with bones of animals. [3] [10]
The first trepanning procedure consisted of different types of tools and techniques: at the beginning the only material that was available for use, it was a sharp and carved rock. The development of The Hippocratic Corpus, written in the fifth century B.C., is the first written source that can be found about trepanning. The aim of the procedure ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
The axial skeleton (80 bones) is formed by the vertebral column (32–34 bones; the number of the vertebrae differs from human to human as the lower 2 parts, sacral and coccygeal bone may vary in length), a part of the rib cage (12 pairs of ribs and the sternum), and the skull (22 bones and 7 associated bones).