Pterygoideus proprius muscle
Musculus pterygoideus proprius
Definition
The pterygoideus proprius muscle, is an inconstant (12.82%) aberrant well-formed muscle between the temporalis and the lateral pterygoid muscles, extending between the infratemporal crest of the greater wing of sphenoid and the lateral pterygoid plate, superficial to the lateral pterygoid muscle.
The pterygoideus proprius muscle and other accessory pterygoid muscles, extending from the body of the sphenoid to the pterygoid process, may represent remnants of the muscles that act on the moveable pterygoids possessed by many lower vertebrates.
References
Penhall B, Townsend G, Tomo S, Nakajima K. The pterygoideus propius muscle revisited. Clin Anat. 1998;11(5):332-7. doi: 10.1002/(SICI)1098-2353(1998)11:5<332::AID-CA7>3.0.CO;2-R. PMID: 9725578.
Snoeck T, Provyn S, Balestra C, Parlak B, Emonts P, Sesbouë B, Clarys JP. The musculus pterygoïdeus proprius: an in-vivo approach with magnetic resonance imaging. J Anat. 2010 Dec;217(6):679-82. doi: 10.1111/j.1469-7580.2010.01308.x. Epub 2010 Oct 15. PMID: 20946540; PMCID: PMC3039180.
