Aggarwal Anjali, Wahee Pratima, Aggarwal Aditya K, Sahni Daisy
Department of Anatomy, Post Graduate Institute of Medical Education & Research, Chandigarh 160012, India.
Surg Radiol Anat. 2011 Mar;33(2):135-40. doi: 10.1007/s00276-010-0723-4. Epub 2010 Sep 1.
Variation in normal anatomy of costal surface of scapula may disrupt smooth scapulothoracic movements and may cause snapping scapula. The aim of this study was to assess variable anatomy of costal surface of scapula and its role in etiopathogenesis of snapping scapula syndrome.
Superomedial angle, depth of costal surface, forward angulation of root of coracoid process and thickness of superior and inferior angles of 92 dry intact adult scapulae of unknown sex were studied.
Superomedial angle ranged from 124° to 162° (144.34° ± 9.09°). The forward angulation of root of coracoid process ranged from 120° to 160° (141.60° ± 6.53°). Depth of costal surface at the level of root of spine varied widely between 10.5 and 26.7 mm (16.73 ± 3.367 mm). Thickness of superior and inferior angles measured 3.34 ± 0.87 and 6.71 ± 1.18 mm, respectively. Forwardly bent rhinoceros-horn-like projection at the lateral border of scapula was seen in 2.17% of specimens.
Variation in anatomy of costal surface of scapula observed in this study may be clinically significant with respect to snapping scapula syndrome.
肩胛骨肋面正常解剖结构的变异可能会干扰肩胛胸壁的平滑运动，并可能导致肩胛骨弹响。本研究的目的是评估肩胛骨肋面的可变解剖结构及其在肩胛骨弹响综合征病因学中的作用。
研究了92具性别未知的干燥完整成人肩胛骨的肩胛上角、肋面深度、喙突根部向前成角以及上下角的厚度。
肩胛上角范围为124°至162°（144.34°±9.09°）。喙突根部向前成角范围为120°至160°（141.60°±6.53°）。脊柱根部水平的肋面深度在10.5至26.7毫米之间变化很大（16.73±3.367毫米）。上角和下角的厚度分别为3.34±0.87毫米和6.71±1.18毫米。在2.17%的标本中可见肩胛骨外侧缘向前弯曲的犀牛角样突起。
本研究中观察到的肩胛骨肋面解剖结构变异对于肩胛骨弹响综合征可能具有临床意义。
