What are the major bones of the shoulder girdle?

The pectoral girdle is made up of two major bones: the clavicle and scapula.

  • Clavicle bone. The clavicle or collarbone is an S-shaped bone situated at the front of your body in a horizontal position. …
  • Scapula bone. …
  • Pectoral girdle joints.

Which 5 bones make up the shoulder girdle?

The bones of the shoulder consist of the humerus (the upper arm bone), the scapula (the shoulder blade), and the clavicle (the collar bone). The clavicle is the only bony attachment between the trunk and the upper limb.

What is the shoulder girdle made up of?

The shoulder girdle is composed of the clavicle and the scapula, which articulates with the proximal humerus of the upper limb. Four joints are present in the shoulder: the sternoclavicular (SC), acromioclavicular (AC), and scapulothoracic joints, and glenohumeral joint.

What bones are part of a girdle?

The bones that attach each upper limb to the axial skeleton form the pectoral girdle (shoulder girdle). This consists of two bones, the scapula and clavicle (Figure 2). The clavicle (collarbone) is an S-shaped bone located on the anterior side of the shoulder.

What is shoulder bone called?

The shoulder is made up of three bones: the scapula (shoulder blade), clavicle (collarbone) and humerus (upper arm bone). Two joints in the shoulder allow it to move: the acromioclavicular joint, where the highest point of the scapula (acromion) meets the clavicle, and the glenohumeral joint.

What 3 bones make up the shoulder girdle?

The shoulder girdle consists of three bones (clavicle, scapula, and humerus) and three joints (sternoclavicular, acromioclavicular, and glenohumeral) as shown in Fig.

Which bone is not found in shoulder girdle?

In humans it consists of the clavicle and scapula; in those species with three bones in the shoulder, it consists of the clavicle, scapula, and coracoid. …

Shoulder girdle
Human shoulder girdle or pectoral girdle
Details
Identifiers
Latin cingulum pectorale

What are the 5 joints of the shoulder?

  • 3.1 Glenohumeral Joint.
  • 3.2 Acromioclavicular joint.
  • 3.3 Sternoclavicular Joint.
  • 3.4 Scapulothoracic Joint.
  • 3.5 Bursae.
  • 3.6 Soft Tissue (Static & Dynamic)

Where is your shoulder bone?

Your shoulder is made up of three bones: your upper arm bone (humerus), your shoulder blade (scapula), and your collarbone (clavicle). The head of your upper arm bone fits into a rounded socket in your shoulder blade. This socket is called the glenoid.

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How do I strengthen my shoulder girdle?

Draw elbows back while squeezing shoulder blades together behind you. You should feel the muscles between your shoulder blades activate and your chest opens up. This strengthens the scapular muscles for improved posture and scapular positioning.

How can shoulder injuries be prevented?

Exercises. Increasing strength and flexibility is the best way to keep your shoulders healthy and prevent injuries. When completing any of these exercises, it’s vital that you focus on form over the amount of weight you’re moving. Poor exercise technique can cause additional damage and create more trouble down the road …

Why is the scapula important to the shoulder girdle?

The scapula is an important bone in the function of the shoulder joint. It engages in 6 types of motion, which allow for full-functional upper extremity movement including protraction, retraction, elevation, depression, upward rotation, and downward rotation.

Which is the smallest bone in human body?

stapes At 3 mm x 2.5 mm, the stapes in the middle ear is the smallest named bone in the human body. The shape of a stirrup, this bone is one of three in the middle ear, collectively known as the ossicles.

What is the difference between the shoulder girdle and shoulder joint?

Shoulder muscles consist of muscles of the shoulder joint, as well as shoulder girdle muscles. The shoulder girdle muscles make the scapula (shoulder blade) move.… … The Shoulder girdle muscles move the clavicle (collar bone) and the scapula (shoulder blade). These generally move together as a unit.

What is the longest bone in the body?

The femur The femur is the strongest bone in the body, and it is the longest bone in the human body.

What are 3 common shoulder injuries?

Common shoulder injuries:

  • Dislocation. If your shoulder is pulled back too hard or rotated too far, the top of your arm might pop out of its socket. …
  • Separation. …
  • Fracture. …
  • Cartilage tear. …
  • Rotator cuff tear. …
  • Frozen shoulder. …
  • Impingement. …
  • Bursitis.
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What are the shoulder muscles called?

The primary muscle group that supports the shoulder joint is the rotator cuff muscles. The four rotator cuff muscles are the supraspinatus, infraspinatus, teres minor, and subscapularis. Together the rotator cuff muscles form a musculotendinous cuff as they insert on the proximal humerus.

What are the 4 main ligaments of the shoulder?

In the shoulder, the joint capsule is formed by a group of ligaments that connect the humerus to the glenoid. These ligaments are the main source of stability for the shoulder. They are the superior, middle and inferior glenohumeral ligaments. They help hold the shoulder in place and keep it from dislocating .

What is the pointy bone in shoulder?

The acromion is the bony tip of the outer edge of your shoulder blade (scapula) that comes off the top of the back side of this bone. It meets with the end of your collar bone (clavicle) at your shoulder. Shoulder impingement occurs when the tendon rubs against the acromion.

How does your shoulder work?

The shoulder joint is the most mobile joint in the body. It moves the shoulder forward and backward. It also allows the arm to move in a circular motion and to move up and away from the body. Shoulders get their range of motion from the rotator cuff.

Is the shoulder girdle stable?

Shoulder girdle stability is thus the stability that takes place when the large muscles of the shoulder girdle (among others, the pectoral muscles in front and the trapezius and rhomboidus muscles at the back) contract together effectively to stabilise the shoulder blade and the shoulder joint.

What are the four muscles of the rotator cuff?

The rotator cuff includes the following muscles[1][2][3]:

  • Subscapularis.
  • Infraspinatus.
  • Supraspinatus.
  • Teres minor.

Does the shoulder bone also move when you move your arm?

As a ball-and-socket joint, this joint can be moved in all directions, although its movement is restricted by tight ligaments. We use it to raise and lower our collarbone when we shrug our shoulders, move our shoulder blades closer together, or cross our arms.

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Which is the major load bearing joint at the shoulder?

glenohumeral joint The glenohumeral joint is what most people think of as the shoulder joint. It’s the major joint in the shoulder, where the rounded top, or head, of the humerus, nestles into a rounded socket of the scapula, called the glenoid. This ball-and-socket construction allows for circular movement of the arm.

Why is the shoulder joint a weaker joint?

The shoulder is the most movable joint in the body. But it is also an unstable joint because of its range of motion. Because the ball of the upper arm is larger than the socket of the shoulder, it is at risk of injury. The shoulder joint is supported by soft tissues.

What are the 3 shoulder muscles?

The deltoid muscle is the main muscle of the shoulder. It consists of three muscle heads: the anterior deltoid, lateral deltoid, and posterior deltoid.

How can I tell if I tore my rotator cuff?

The most common symptoms of a rotator cuff tear include:

  1. Pain at rest and at night, particularly if lying on the affected shoulder.
  2. Pain when lifting and lowering your arm or with specific movements.
  3. Weakness when lifting or rotating your arm.
  4. Crepitus or crackling sensation when moving your shoulder in certain positions.

What is the best exercise for shoulder pain?

Don’t push yourself beyond your limits, and discontinue the exercises if you experience pain that goes beyond mild discomfort.

  1. Across-the-chest stretch. …
  2. Neck release. …
  3. Chest expansion. …
  4. Eagle arms spinal rolls. …
  5. Seated twist. …
  6. Shoulder circles. …
  7. Doorway shoulder stretch. …
  8. Downward Dog Pose.