Medicograspers | Anatomy notes | Upper limb | Notes on shoulder girdle |

 SHOULDER GIRDLE AKA PECTORAL GIRDLE: 

"803 The Scapula", licensed under CC BY 3.0

In this article, you will learn the basic anatomy of pectoral girdle aka pelvic girdle. 

    Clavicle- aka collar bone. Medially articulates with the manubrium of the sternum and laterally articulates with the acromion process of the scapula. S-shaped bone and convex medially.

    Conoid tubercle- On the underside of the clavicle, laterally, the inferior outgrowth of the clavicle bone is seen and this is called a conoid tubercle. The coracoclavicular ligament attaches here.

    Scapula- This is the flat bone located at the back of our body and it serves as the attachment for many muscles. This bone has 3 processes,

Spinous process.

Acromion process – which articulates with the clavicle.
Coracoid process – the hook-shaped extension of the scapula.

Surfaces of the scapula:
    Anterior surface- aka costal surface of the scapula. Lies against the ribs.
    Posterior surface- lies at the back of the scapula.

Fossae of the scapula:
    The spinous process of the scapula divides the posterior surface of the scapula into supra-spinous fossa (above the spinous process) and infra-spinous fossa (below the spinous process).
    The fossa present on the anterior side of the scapula which lies under the scapula is called the subscapular fossa.
    The glenoid fossa where the humerus articulates.

Tubercles:
    The tubercles above and below the glenoid fossa are called supraglenoid tubercle and infra-glenoid tubercle.
    Supraglenoid tubercle - point of attachment of the long head of the biceps.
    Infraglenoid tubercle - point of the attachment of the long head of the triceps.

Notch:

Suprascapular notch- found on the superior side of the scapula. Found medial to the coracoid process.