Scapula Bone Anatomy

The scapula or shoulder blade is a flat, triangular-shaped bone that lies adjacent to the posterior surface of ribs 2-7.

 Scapula Bone Anatomy

Markings of the Scapula Bone:

  • It has three borders (superior, lateral, medial), three angles (superior, lateral, medial) and two surfaces (costal, dorsal). A prominent ridge or spine divides the dorsal surface into two, unequal parts called the supraspinous fossa and infraspinous fossa.
  • A shallow depression at the lateral angle called the glenoid cavity accepts the head of the humerus to form the shoulder or gleno-humeral joint.
  • The muscles that originate on the scapula (extrinsic muscles) insert on the humerus, radius, and ulna. They cause the humerus to rotate, abduct, adduct, flex or extend.
Dr Rohit Bhaskar, Physio
Dr Rohit Bhaskar, Physio Hey, I am founder of Bhaskar Health and completed my Graduation in Physiotherapy from Uttar Pradesh University of Medical Sciences. My clinical interests are in Chest Physiotherapy, stroke rehab, parkinson’s and head injury rehab.

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