It is found the suprasternal space should be enclosed by the superficial layer of the deep cervical fasciae and the fasciae of the infrahyoid muscles, rather than the past opinion of the textbook.

得出胸骨上间隙应是由颈深筋和舌骨下筋围成，于以往教科书中描述的由颈深筋分为两附着于胸骨形成。