BONY SHOULDER ANATOMY 2023

Front

WHAT IS THE LESSER TUBERCLE?

Back

The lesser tubercle is a small, prominent bony projection located on the anterior aspect of the humerus, serving as an attachment point for the subscapularis muscle.

Front

WHAT IS THE DELTOID TUBEROSITY?

Back

The deltoid tuberosity is a roughened area on the lateral aspect of the humerus where the deltoid muscle attaches, facilitating shoulder movement.

Front

WHICH ROTATOR CUFF MUSCLE IS MOST COMMONLY INJURED?

Back

The supraspinatus is the rotator cuff muscle most commonly injured, often due to repetitive overhead activities.

Front

WHAT IS THE ANTERIOR STERNOCLAVICULAR LIGAMENT?

Back

The anterior sternoclavicular ligament is a ligament that connects the sternum to the clavicle, providing stability to the sternoclavicular joint.

Front

WHAT IS THE BICIPITAL GROOVE?

Back

The bicipital groove, also known as the intertubercular groove, is a groove on the humerus that houses the tendon of the long head of the biceps brachii muscle.

Front

WHAT IS THE ROLE OF THE ROTATOR CUFF?

Back

The rotator cuff stabilizes the shoulder joint and allows for a wide range of shoulder movements.

Front

WHAT ARE THE COMPONENTS OF THE ROTATOR CUFF?

Back

The rotator cuff consists of four muscles: supraspinatus, infraspinatus, teres minor, and subscapularis.

Front

WHAT IS THE FUNCTION OF THE SUPRASPINATUS MUSCLE?

Back

The supraspinatus muscle initiates shoulder abduction and stabilizes the humeral head in the glenoid cavity.

Front

WHAT IS THE ACROMIOCLAVICULAR JOINT?

Back

The acromioclavicular joint is the joint formed by the acromion of the scapula and the clavicle, allowing for shoulder movement.

Front

WHAT IS THE CORACOCLAVICULAR LIGAMENT?

Back

The coracoclavicular ligament connects the coracoid process of the scapula to the clavicle, providing stability to the acromioclavicular joint.