May 1943


Arch Surg. 1943;46(5):687-696. doi:10.1001/archsurg.1943.01220110103019

Bursas have been defined as the synovial strata which are found outside of joints to reduce friction.1 Normally they are located between the skin and bony projections and between tendons and prominences over which the tendons move.2 Albinus,3 while he was not the first to discover these synovial sacs, described their occurrence between muscles and gave them the name bursae mucosae. The normal bursas about the joints develop as a rule during the latter half of intrauterine life. Complete maturation of the bursal cavity and definition of its outline are believed to come only with fetal movement. Occasionally, normal bursas develop first in early childhood, and instances have been reported in which even the larger bursas were not present in adult life.4

In addition to the usual bursas about the joints present at birth, other bursas develop not infrequently beneath the skin or about the tendons

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