What is the function of the lateral angle of the scapula?

What is the function of the lateral angle of the scapula?

Its action consists of lateral rotation at the shoulder joint. This muscle is innervated by the axillary nerve. Teres major muscle – its origins are the posterior surface of the inferior angle and the lower part of the lateral border. Its role is to perform adduction and medial rotation at the shoulder joint.

What is the lateral angle 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.

What are the 3 angles of the scapula?

The scapula has three angles (superior/medial, lateral, inferior), three borders (medial, lateral/axillary, and superior), and two surfaces (ventral and dorsal). The scapula has three processes: the acromion, the spine, and the coracoid process.

Where is the lateral border of the scapula?

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. Immediately below the glenoid cavity is a rough impression, the infraglenoid tuberosity,about 2.5 cm.

What angle is lateral?

The “lateral angle,” the angle with which the posterior wall of the internal auditory canal meets the posterior fossa plate, is arguably wider in females (>45 degrees) than males (<45 degrees).

Why is the lateral border of the scapula thick?

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

Which border of scapula is not palpable?

In its lower two-thirds, i.e. where it forms the medial boundary of the infraspinous fossa, this border can easily be felt through the skin, but its upper third is more deeply placed and cannot be palpated in the normal subject. The superior border, thin and sharp, is the shortest of the three borders.

What attaches to the lateral border of the scapula?

The supraspinatus muscle attaches to this region of the scapula. Infraspinous fossa (Fossa infrspinata) is a large, slightly depressed area located inferior to the spine. Glenoid cavity or fossa (Cavitas glenoidalis) is a slight concavity at the lateral angle.

What is the name of the lateral projection of the spine of the scapula?

Acromion – flat, lateral aspect of the spine of the scapula.

How do you measure lateral Talocalcaneal angle?

The lateral talocalcaneal angle is the angle formed by the intersection of the line bisecting the talus with the line along the axis of the calcaneus on lateral weight-bearing views. A line is drawn at the plantar border of the calcaneus (or a line can be drawn bisecting the long axis of the calcaneus).

What is inferior angle of scapula?

The inferior angle of the scapula is where the vertebral (medial) and axillary (lateral) borders intersect.

Why is lateral border of scapula thick?