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Shoulder Anatomy

Patient Information
Shoulder Anatomy
Shoulder Muscles sectionShoulder Muscles
Shoulder AnatomyShoulder Anatomy
Bones & Joints of the ShoulderBones & Joints of the Shoulder
Shoulder LigamentsShoulder Ligaments
Shoulder TendonsShoulder Tendons
Nerves of the ShoulderNerves of the Shoulder
Shoulder BursaeShoulder Bursae
Glenoid LabrumGlenoid Labrum

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Shoulder Tendons

tendons are extensions of muscles that attach muscles to bone. Muscles move the bones by pulling on the tendons.

Rotator Cuff

The rotator cuff tendons are a group of four tendons that connect the deepest layer of muscles to the humerus.  They are the tendons of the rotator cuff muscles.
These are (from front to back):

  1. subscapularis
  2. supraspinatus
  3. infraspinatus
  4. teres minor

The supraspinatus is the most commonly affected tendon, both by overuse and trauma. It is the muscle that lifts your arm out to the side (a very important movement for most daily taks). Injury to the tendon can result in a Rotator Cuff Tear. Overuse can lead to Subacromial Impingement.

Biceps tendons

The biceps muscle has two tendons at the shoulder, called the Long Head and Short Head.

The Long Head of Biceps (LHB) is a very important tendon that travels through the shoulder joint (glenohumeral joint). The biceps tendon begins at the top of the shoulder socket (the glenoid) and then passes across the front of the shoulder to connect to the biceps muscle. (The biceps is the muscle that weightlifters are always showing off). 

The LHB is a common source of shoulder pain and can rupture. Click Here for more.

The most posterior muscle and tendon of the rotator cuff. Externally rotates the shoulder in abduction.
a structure (tissue) that attaches a muscle to a bone. When a tendon becomes inflamed, the condition is referred to as tendinitis or tendonitis.
a structure (tissue) that attaches a muscle to a bone. When a tendon becomes inflamed, the condition is referred to as tendinitis or tendonitis.
Top muscle and tendon of the rotator cuff. Abducts the arm. It is the tendon that is most often torn.
The most anterior muscle and tendon of the rotator cuff. Internally rotates the shoulder.
muscle and tendon of the rotator cuff. Externally rotates the arm. Lies between supraspinatus and teres minor.
bone of the upper arm - connecting the shoulder to the elbow

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