The 68th
Scientific Meeting
초록접수 미리보기
| 19S-031 |
New insights into pathways of the dorsal scapular nerve and artery for selective dorsal scapular nerve blockade
1Department of Anesthesiology and Pain Medicine, Wonkwang University
School of Medicine, Wonkwang University Hospital, Iksan, Korea;
2Jesaeng-Euise Clinical Anatomy Center, Wonkwang University School of
Medicine, Iksan, Korea;
3Department of Anatomy, Wonkwang University School of Medicine, Iksan,
Korea;
4Wonkwang Institute of Science, Wonkwang University School of Medicine,
Iksan, Korea
Background: The aim of this study was to clarify the topographical relationships between the dorsal scapular nerve (DSN) and the dorsal scapular artery (DSA) in the interscapular region to identify safe and convenient injection points related to DSN blockade.
Materials and Methods: Thirty shoulders of 15 embalmed Korean adult cadavers and 50 live subjects were used for dissection and ultrasound (US) analysis, respectively.
Results: The running patterns of the DSA and DSN in the interscapular region were classified into three types based on locational relationships. Type I was defined as nerves that were medial to the artery and parallel without changing location over their entire length (80% of specimens). In type II (13.3%), the nerve and artery traversed one another only one time over their entire length. In type III (6.7%), the nerve and artery traversed one another >2 times, resembling a twist. At the levels of lines A, B, and C, the nerve was always medial to the artery. Below line D, the number of arteries identified by the naked eye was clearly decreased. At the level of each line, except line A, most of the arteries were lateral to the medial border of the scapula, and the frequency of nerves medial or lateral to the medial border of the scapula was similar. In US imaging of live subjects, the DSA was most observed at the level of A (94%), followed by those of B (86%) and C (78%).
Conclusions: Results of this study are anticipated to enhance the current knowledge base regarding the pathway of the DSN and DSA in the interscapular region and provide helpful information for selective diagnostic and nerve block procedures in this region.
Materials and Methods: Thirty shoulders of 15 embalmed Korean adult cadavers and 50 live subjects were used for dissection and ultrasound (US) analysis, respectively.
Results: The running patterns of the DSA and DSN in the interscapular region were classified into three types based on locational relationships. Type I was defined as nerves that were medial to the artery and parallel without changing location over their entire length (80% of specimens). In type II (13.3%), the nerve and artery traversed one another only one time over their entire length. In type III (6.7%), the nerve and artery traversed one another >2 times, resembling a twist. At the levels of lines A, B, and C, the nerve was always medial to the artery. Below line D, the number of arteries identified by the naked eye was clearly decreased. At the level of each line, except line A, most of the arteries were lateral to the medial border of the scapula, and the frequency of nerves medial or lateral to the medial border of the scapula was similar. In US imaging of live subjects, the DSA was most observed at the level of A (94%), followed by those of B (86%) and C (78%).
Conclusions: Results of this study are anticipated to enhance the current knowledge base regarding the pathway of the DSN and DSA in the interscapular region and provide helpful information for selective diagnostic and nerve block procedures in this region.
|
|
