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Shoulder Bones | Shoulder Joint

The human shoulder is a joint consisting of bones, muscles, and ligaments. The two shoulders are located beneath the head connecting the arm and the chest.  Each shoulder consists of 2 bones, the clavicle and the scapula, and collectively both shoulders account for 4 bones in the body.

Below are detailed diagrams and descriptions regarding the shoulder bones. You can find the names and lists of the shoulder bones and descriptions of the shoulder bones anatomy.

Shoulder bones

List of all Shoulder Bones


  • scapula (2)
  • clavicle (2)

Scapula Bone

The scapula, also known as the shoulder bone, is a triangle shaped bone located in the shoulder girdle. The human body contains two scapula bones, one per shoulder. This bone's main functions include protection of the thoracic cage and providing a connection between the humerus and the clavicle.

The scapula provides a site for many muscle attachments since the shoulder girdle is heavily used for locomotion. The scapula connects to the Pectoralis Minor, Coracobrachialis, Serratus Anterior, Triceps Brachii, Biceps Brachii, Biceps Brachii, Subscapularis – just too name a few. Furthermore, the scapula is described as containing two surfaces, the costal surface and dorsal surface. The two surfaces differ in shape, texture, concavity, and depressions.

Clavicle Bone

The clavicle, also known as the collar bone, is curvy bone located in the shoulder girdle. This bone is located just above the scapula and forms the top ridge of the shoulder. The clavicle has many functions in the human body skeleton. It functions in keeping the scapula in position. By doing so, the arm is able to hang freely and obtain maximum range of movement. The clavicle also protects important blood vessels in the region and transmits physical impact and force to other parts of the body to reduce trauma and damage.

Like the scapula, the clavicle provides the attachment point for several muscles. The shoulder girdle is used heavily in motion of the arm and thus it is imperative that the bones of the shoulder girdle allow for movement. The clavicle / collar bone connects to the deltoid muscle, trapezius muscle, subclavius muscle, and many more.  Interestingly, the clavicle does not contain a bone marrow cavity and is made up of spongy bone.

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Test Your Knowledge

How Many Bones in the Human Body?

An adult has a total of 206 bones in their skeleton

How many Bones in a Child's Body?

A newborn baby has 270 bones in the skeletal system. Most of their skeleton is made up of cartilage which forms bone as it hardens over time. The bones in a child's skeleton fuse together as they grow, reducing the number, up until about 25 years old.

What is The Strongest Bone in the Human Body?

The femur or thigh bone is the strongest bone in the body. It is situated between the pelvis and the knee. It is also the longest bone in the body and is fully one quarter of your bodies' height.

What is the Weakest Bone in The Body?

The weakest bones in your body are the tiny bones inside your ear that enable you to hear. On the other hand; the most commonly fractured bone is the clavicle.

What is the Hardest Bone in the Body?

The hardest bone in the body is the petrous portion of the temporal bone. The temporal bones are found at the sides and base of the skull and the petrous portion is specifically the part at the base of the skull that contains the organs for hearing.

Where are the Smallest bones in Your Body Located?

The smallest bone in the body is called the stapes. It is a stirrup shaped bone found inside the ear drum that transmits vibrations enabling us to hear.

How many Bones are in the Leg?

A human leg contains 30 bones. There are 26 bones that make up the foot, and the four major bones of the leg, which are the thigh bone (femur), the shin bone (tibia), the calf bone (fibula) and the knee cap (patella)