Scapula肩胛骨 Two surfaces o Anterior surface concave subscapu lar fossa肩胛下窝 o Poster ior surface suprasp Inous fossa and nfrasp inous fossae冈上、下窝, spine of scapu l a 肩胛冈, acromion 肩峰Scapula 肩胛骨 ◼ Two surfaces ❑ Anterior surface concave: subscapular fossa肩胛下窝 ❑ Posterior surface: supraspinous fossa and infraspinous fossae冈上、下窝, spine of scapula 肩胛冈, acromion 肩峰