본문 바로가기
  • Home
Basic Search

The Size of the Rotator Cuff and the Positional Relationship of Bony Landmarks: An Anatomical Study

김경진 1,  Cho Ho-Jung 2,  Nam Yong Seok 2,  Han Seung Ho 3,  In-Beom Kim 2

1가톨릭대학교 의과대학 해부학교실∙가톨릭응용해부연구소
2가톨릭대학교
3중앙대학교

Accredited

ABSTRACT

For treatment of the rotator cuff, locating the structure and position of the rotator cuff is crucial. Theaim of this study is to identify the size of each rotator cuff and the locational relationship with bony landmarks,and to provide superficial landmarks for locating the tendon from the surface. Fifty-two shoulders from 26 cadavers were dissected and measured in a supine position. The central point wasset as the most protrusive point on the greater tubercle of the humerus. The measurement of angles was describedventral as positive (+) and dorsal as negative (-) placing the long axis of the humeral shaft at 0°. The range of the angle which each rotator cuff tendon is attached to the humerus head was: 53.8~103.3degrees for the subscapularis, -17.1~25.7 degrees for the supraspinatus, -68.4~-1.9 degrees for theinfraspinatus, and -117.1~-75.7 degrees for the teres minor. The vertical inferior point drawn from the anterioredge of the acromion to the humerus was 7.5±11.7 degrees from the central point. The average position of thepoint was the midpoint of insertion of the supraspinatus tendon. The lateral horizontal point drawn from theacromial angle to the humerus was -49.4±14.3 degrees away and located at an average of 30% inferior to theinfraspinatus tendon. Also the lateral horizontal point drawn from the most protrusive point of the coracoidprocess to the humerus was 63.1±14.7 degrees away and located at an average of 20% superior to thesubscapularis tendon. Lastly, the most protrusive point of the lesser tubercle of the humerus was located at arange of 80.8±11.1 degrees and an average of 60% superior to the insertion of the subscapularis tendon. For the measurements of the size of the rotator cuff, there was no statistical difference between the left andright. However, the four measurements - the proximal width of the teres minor tendon, the proximal and distalwidth, and the length of the subscapularis tendon - showed statistically significant difference between the sexes(P⁄0.05). Therefore, to identify the location of the tendon structures by palpation for shoulder treatment, using the lessertubercle for the subscapularis, the anterior edge of the acromion for the supraspinatus, and the acromial angle forthe infraspinatus as landmarks is regarded to be effective.

Statistics

  • 335 Viewed
  • 96 Downloaded

Tools

Issue List

Citation status

* References for papers published after 2023 are currently being built.

Basic Search Advanced Search