An Anatomical Study of the Projection Region of the Dome of the Pleura to the surface of the Anterior Neck. (Part II). Geographical Relationship with the Sternocleidomastoid Muscle, Clavicle, and Acupuncture Points of the Lower Anterior Neck / 全日本鍼灸学会雑誌

Twenty-six domes of the pleura of thirteen cadavers were investigated. The summits of all domes protruded above the clavicle. Mediolateral positions of the summits were located between the lateral edge of the origin of the sternal head of the sternocleidomastoid muscle (CL3) and the lateral edge of the origin of its clavicular head (CL5), and their craniocaudal positions were located between the Point “Suitotsu” (S₁₀) and the medial edge of the origin of the clavicular head (CL4). The lateral edges of the domes did not reach the level of the clavicle. Their mediolateral positions were located between CL4 and the Point “Ketsubon” (S₁₂), and their craniocaudal positions were located between CL5 and the sternal extremity of the clavicle (CL2). The medial edges of the domes were both mediolaterally and craniocaudally located between CL2 and the suprasternal point. Projection regions of the domes of the pleura to the surface of the anterior neck were included, in all cases, within the quadrate region connecting the following four points: the Point “Suitotsu” (S₁₀), a point of intersection between the median line and a line drawn vertically from the Point “Suitotsu” (S₁₀) toward the median line, the suprasternal point, and a point on the clavicle corresponding to the medial one-third of the half shoulder width.

Anatomical study of the projection region of the dome of the pleura to the surface of the anterior neck / 全日本鍼灸学会雑誌

The projection region of the dome of the pleura to the surface of the anterior neck was investigated in 31 domes of 17 cadavers. The point “Tentotsu”, and a line connecting that point and the most lateral edge of the acromion were adopted for a basis of measurement of the projection region. The mean length of the Tentotsu-Acromion line was 185mm on either side of the body. Its upward angle to the horizontal plane was 22° and 23° in average on the right and left sides, respectively, while its backward angle to the frontal plane was 23° on the right and 25° on the left. The right pleural domes (17 cases) were included within a range 0-58mm lateral to the Tentotsu and lower than 44mm above, and on the left side (14 cases), these values were 5-58mm and 49mm, respectively. On the other hand, when adopting the Tentotsu-Acromion line as the basis, the pleural domes were located within the medial one-third of the line. Their summits lay on the point of its medial one-fourth in medio-lateral direction, and were situated at levels lower than about 35 (on the right) or 32mm (on the left) above the line.