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Medical Definition of Limbs of bony semicircular canals
1. The extremities of the bony semicircular canals in which the corresponding membranous limbs of the semicircular ducts are located; they are the common bony crus, simple bony crus, and ampullary bony crus. Synonym: crura ossea canalium semicircularium, limbs of bony semicircular canals. (05 Mar 2000)