What is the size of the supraspinatus tendon?

2. Anatomy

Rotator cuff tendon	Medial to lateral width	Anterior to posterior length
Mean (mm)	Mean (mm)
Supraspinatus	16	23
Infraspinatus	18	28
Teres minor	21	29

What is considered a large supraspinatus tear?

Massive rotator cuff tears are tears greater than 5cm in size and involve at least both the supraspinatus and infraspinatus components of the rotator cuff. They may extend into the subscapularis and teres minor also. A massive tear is unusual in a young patient (under 60 years of age).

How thick is the supraspinatus muscle?

The study, which included a detailed dissection separating the anterior and posterior bellies of the supraspinatus tendon, found the thickness of the anterior supraspinatus tendon to be 3.1 mm and the thickness of posterior supraspinatus tendon to be 2.5 mm.

What is the average size of a rotator cuff tear?

The normal rotator cuff is 10–12 mm thick; thus, grade 3 tears are considered significant tears involving more than 50% of the cuff thickness (,63). There is controversy regarding the appropriate treatment for partial-thickness rotator cuff tears.

Is the supraspinatus part of the rotator cuff?

[edit on Wikidata] The supraspinatus (plural supraspinati) is a relatively small muscle of the upper back that runs from the supraspinatous fossa superior portion of the scapula (shoulder blade) to the greater tubercle of the humerus. It is one of the four rotator cuff muscles and also abducts the arm at the shoulder.

How big is a tear in the supraspinatus tendon?

Interpretation: There is a focally retracted full thickness 1.2 x 1.2 cm tear of the supraspinatus tendon at its anterior attachment site on the humerus. There is supraspinatus muscular atrophy. The retracted margin of the tendon is at the level of the lateral and anterior margin of the anterior acromion.

What are the different types of supraspinatus tests?

Gravity-lessened Test: Position – the subject in supine with the humerus in neutral and the elbow flexed to 90º. Stabilize – the arm. Resist – against shoulder abduction. Anti-gravity Test: Position – the subject in sitting with the humerus in neutral and the elbow flexed to 90º. Stabilize – the arm. Resist – against shoulder abduction.

How is the supraspinatus muscle important to the humerus?

In addition to arm elevation, the supraspinatus muscle is critical in pulling the head of the humerus (the ball part of the ball and socket joint) into the glenoid (socket). Below is a brief video. What Are the Factors That Lead to a Tear?

What is the size of the supraspinatus tendon? 2. Anatomy Rotator cuff tendon Medial to lateral width Anterior to posterior length Mean (mm) Mean (mm) Supraspinatus 16 23 Infraspinatus 18 28 Teres minor 21 29 What is considered a large supraspinatus tear? Massive rotator cuff tears are tears greater than 5cm in size and involve…