Sage-Tips

Why is the lateral border of the scapula thick?

Message: The borders of the scapula are thickened, or flared, for the attachment of muscles.

What is the thickest part of the scapula?

The lateral angle of the scapula or glenoid angle also known as the head of the scapula is the thickest part of the scapula. It is broad and bears the glenoid cavity on its articular surface which is directed forward, laterally and slightly upwards, and articulates with the head of the humerus.

Which border of scapula is thinnest?

Of the three borders of the scapula, the superior border is the shortest and thinnest; it is concave, and extends from the medial angle to the base of the coracoid process.

Where is the lateral border of the scapula?

axillary border
The lateral border (axillary border) is the thickest of the three borders of the scapula. It begins above at the lower margin of the glenoid cavity, and inclines obliquely downward and backward to the inferior angle.

How thick is the scapula bone?

The average length of the scapulas from the superior to the inferior angle was 155 +/- 16 mm (mean +/- standard deviation). The thickness of the medial border 1 cm from the edge was 4 +/- 1 mm.

Where is the axillary border of scapula?

The axillary border of the scapula is the thickest of the three borders of the scapula bone. It extends down from the lower margin of the glenoid cavity all the way along the lateral edge of the scapula to the inferior angle.

What attaches to lateral border of scapula?

Lateral border or margin (Margo lateralis) is the lateral edge of the scapula. The teres minor muscle attaches along this surface, which is also called the axillary border.

Which border of scapula is thick?

Pectoralis minor is inserted into the medial borderand superior surface of coracoids process. Teres minor arises from upper 2/3rds of rough strip on the dorsal surface along the lateral border. Inferior belly of omohyoid arises from upper border near the suprascapular notch.

What does the lateral border do?

The lateral border, or base, the shortest of the three, is slightly concave; its edge, thick and round, is continuous above with the under surface of the acromion, below with the neck of the scapula. It forms the medial boundary of the great scapular notch, which serves to connect the supra- and infraspinatous fossae.

What is the function of lateral border?

Borders and angles The lateral border is often called the axillary border as it runs superolaterally towards the apex of the axilla. It is the thickest and strongest of the three borders for muscle attachment.

What is the function of the superior border of the scapula?

The superior border of the scapula extends from the superior angle to the coracoid process. The coracoid process is a hook-like structure that comes off anteriorly from the lateral superior aspect of the ventral side of the scapula. Like the acromion, it is an attachment point for muscles and ligaments.

Which are borders of the scapula?

Like any triangle, the scapula consists of three borders: superior, lateral and medial. The superior border is the shortest and thinnest border of the three. The medial border is a thin border and runs parallel to the vertebral column and is therefore often called the vertebral border.