What is your clavicle and scapula?
The bones that connect the upper extremity to the trunk are the clavicle, or collar bone, and the scapula, or shoulder blade.
How does the scapula attach to the clavicle?
So the clavicle is this long bone here which connects the scapula at one end and the manubrium of the sternum at the other end so medially articulates with new manubrium. And naturally it articulates
What is the anatomy of the clavicle?
The clavicle is a sigmoid-shaped long bone with a convex surface along its medial end when observed from cephalad position. It serves as a connection between the axial and appendicular skeleton in conjunction with the scapula, and each of these structures forms the pectoral girdle.
What muscles attach to the clavicle?
The clavicle is an S-shaped bone that is anchored by strong ligamentous attachments on both its medial and lateral ends. Muscular attachments to the clavicle include the sternocleidomastoid, pectoralis major, and subclavius muscles proximally and the deltoid and trapezius muscles distally.
Where is the clavicle and scapula connected?
The acromioclavicular joint connects the clavicle to the acromion, which is part of the shoulder blade or scapula.
Where is the clavicle and scapula located?
shoulder
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 two bones attach to clavicle?
Structure. The clavicle joins the scapula, or shoulder blade, and sternum to form two joints on either end of the bone, which are: Acromioclavicular (AC) joint: The acromioclavicular joint forms between the acromion of the scapula and clavicle at the top of the shoulder, held together by the acromioclavicular ligament.
How many muscles are in your clavicle?
There are five muscles that make their origin or insertion on the clavicle: pectoralis major and sternocleidomastoid muscles medially; subclavius muscle centrally; and deltoid and trapezius muscles distally (Gray, 1918; Netter, 1987).
Where is scapula located?
The scapula is a flat, triangular-shaped bone (colloquially as the “shoulder blade”). It is located in the upper thoracic region on the dorsal surface of the rib cage. It connects with the humerus at the glenohumeral joint as well as the clavicle at the acromioclavicular joint to form the shoulder joint.
What is the weakest part of the clavicle?
Most common site of fracture is the middle third segment of the clavicle because its weakest point is at the junction of the middle and lateral third of the clavicle.
What is the space between the clavicle called?
The thoracic outlet is a narrow space between your collarbone (clavicle) and your first rib. Nerves and blood vessels exit from your chest to your arm through this space. This includes: The subclavian artery, a very large main artery.
What are the 4 joints of the shoulder?
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.
Why clavicle bone is called beauty bone?
The clavicle, or collarbone, is also referred to as “beauty bone” because of its prominent body location. It is the only long bone that lies horizontally in the body. The shape of the clavicle appears elongated ‘S’ due to its unique anterior and posterior curvatures.
What type of bone is clavicle?
What type of bone is the clavicle? The clavicle is considered a long bone, since it’s longer than it is wide. Long bones have two main parts. The diaphysis is the central part of the bone and the epiphysis is the rounded end of the bone.
What type of bone is scapula?
The scapula is a large, flat triangular bone with three processes called the acromion, spine and coracoid process . It forms the back portion of the shoulder girdle.
How many bones are in the scapula?
two bones
“In terms of comparative anatomy the human scapula represents two bones that have become fused together; the (dorsal) scapula proper and the (ventral) coracoid. The epiphyseal line across the glenoid cavity is the line of fusion.
Which part of the clavicle is most commonly fractured?
The most common fractures of the clavicle are in the middle of the shaft of the bone, approximately halfway between the sternum and the AC joint. The most common way to treat the fractures in the middle is with immobilization with either a sling or a special bandage called a figure-of-8 splint.
What muscle elevates the clavicle?
The clavicle transmits the supporting forces of the trapezius muscle to the scapula via the intact coracoclavicular ligaments. During elevation of the arm, trapezius action is responsible for raising the clavicle by approximately 30° about the sternoclavicular axis.
What are the 7 movements of the shoulder?
The human shoulder is the most mobile joint in the body. This mobility provides the upper extremity with tremendous range of motion such as adduction, abduction, flexion, extension, internal rotation, external rotation, and 360° circumduction in the sagittal plane.
What is the collar bone called?
clavicle
Your clavicle (collarbone) is a long, thin, slightly curved bone that connects your arm to your body. It sits below your neck and is part of the front of your shoulder. It runs horizontally (from side to side). This bone connects your sternum in the middle of your ribcage to your shoulder blade (scapula).
Which bone is strongest in human body?
The femur
The femur is one of the most well-described bones of the human skeleton in fields ranging from clinical anatomy to forensic medicine. Because it is the longest and strongest bone in the human body, and thus, one of the most well-preserved in skeletal remains, it makes the greatest contribution to archaeology.
What is the softest bone in the body?
The weakest and softest bone in the human is the clavicle or collar bone. Because it is a tiny bone which runs horizontally across your breastbone & collarbone, it is simple to shatter.
Why clavicle is called beauty bone?
Why is it called clavicle?
It receives its name from the Latin clavicula (“little key”), because the bone rotates along its axis like a key when the shoulder is abducted. The clavicle is the most commonly fractured bone.
What are the 5 joints of the shoulder?
The shoulder complex comprises the glenohumeral joint, sternoclavicular joint, acromioclavicular joint, and the scapulothoracic articulation, and connects the upper limb to the trunk.