Clavicle Anatomy Animation | General features, Osteology, Attachments, Development, clinical anatomy
Summary
TLDRThis script provides an in-depth overview of the clavicle, commonly known as the collarbone. It describes the bone's structure, its role in connecting the upper limb to the trunk, and its function in arm movement. The clavicle's unique horizontal orientation and lack of a medullary cavity are noted. The description details the bone's shaft, acromial end, sternal end, and various surfaces, highlighting their anatomical features, including ligament attachments and articulations with other bones such as the scapula and sternum.
Takeaways
- 🦴 The clavicle is also known as the collarbone and is a long bone that lies horizontally in the body.
- 🏋️♂️ It transmits weight from the upper limb to the trunk and helps in arm movement above the shoulder level.
- 👕 The clavicle is a subcutaneous bone, meaning it is located just beneath the skin.
- ❌ Unlike other long bones, the clavicle does not have a medullary cavity.
- ⏳ It is the first bone to begin the process of ossification (bone formation).
- 🔗 The lateral 1/3 of the clavicle is divided into two surfaces and two borders, with specific landmarks like the conoid tubercle and trapezoid line, which attach to ligaments.
- ⚖️ The medial 2/3 of the clavicle has four surfaces, with the anterior being rough and convex, and the posterior being smooth and concave.
- 🦵 The inferior surface of the clavicle has the costal impression, which connects to the costoclavicular ligament, and the subclavian groove, where the pectoral fascia attaches.
- ⚙️ The acromial end of the clavicle is flat and articulates with the acromion process of the scapula, forming part of the acromioclavicular joint.
- 🔲 The sternal end of the clavicle is quadrangular and articulates with the manubrium of the sternum, forming part of the sternoclavicular joint.
Q & A
What is another name for the clavicle?
-The clavicle is also known as the collarbone.
What is unique about the orientation of the clavicle compared to other long bones in the body?
-The clavicle is the only long bone in the body that lies horizontally.
Does the clavicle have a medullary cavity?
-No, the clavicle does not have a medullary cavity.
What are the main functions of the clavicle?
-The clavicle transmits weight from the upper limb to the trunk, forms part of the shoulder girdle, and assists in movement of the arm above shoulder level.
How is the shaft of the clavicle divided?
-The shaft of the clavicle is divided into the lateral one-third and the medial two-thirds.
What is the function of the conoid tubercle on the clavicle?
-The conoid tubercle gives attachment to the conoid part of the coracoclavicular ligament.
Where does the trapezoid part of the coracoclavicular ligament attach on the clavicle?
-The trapezoid part of the coracoclavicular ligament attaches to the trapezoid line, an oblique ridge on the inferior surface of the clavicle.
What are the key characteristics of the medial two-thirds of the clavicle?
-The medial two-thirds of the clavicle has four surfaces: the anterior surface (rough and convex), the posterior surface (smooth and concave), the upper surface, and the inferior surface, which includes the costal impression for attachment to the costoclavicular ligament.
What does the acromial end of the clavicle articulate with?
-The acromial end of the clavicle articulates with the clavicular facet on the acromion process of the scapula.
What does the sternal end of the clavicle articulate with?
-The sternal end of the clavicle articulates with the clavicular notch of the manubrium sterni and is associated with the sternoclavicular joint.
Outlines
🦴 Overview of the Clavicle
The clavicle, also known as the collar bone, is a long, horizontally-lying bone at the front of the neck, forming part of the shoulder girdle. It is the only long bone that lacks a medullary cavity. The clavicle connects the upper limb to the trunk, transmitting weight and assisting arm movements above shoulder level. It is composed of a shaft, an acromial end, and a sternal end.
🔍 Anatomy of the Clavicular Shaft
The clavicular shaft is divided into a lateral third and a medial two-thirds. The lateral third has two surfaces and two borders: the superior surface, which is subcutaneous, and the inferior surface, which is rough and has the conoid tubercle for ligament attachment. The anterior border is concave with the deltoid tubercle, while the posterior border is convex.
🩻 Medial Two-Thirds of the Clavicle
The medial two-thirds of the clavicle has four surfaces: the rough, convex anterior surface; the smooth, concave posterior surface; the upper surface; and the inferior surface. The latter features the costal impression for ligament attachment and the subclavian groove, which anchors the pectoral fascia and contains the nutrient foramen.
🔗 Acromial and Sternal Ends of the Clavicle
The acromial end of the clavicle is flat with an oval facet that articulates with the acromion process of the scapula, forming part of the acromioclavicular joint. The sternal end is quadrangular, articulating with the manubrium of the sternum. This end also provides attachment points for ligaments and the articular disc of the sternoclavicular joint.
Mindmap
Keywords
💡Clavicle
💡Collar Bone
💡Shaft
💡Acromial End
💡Sternal End
💡Conoid Tubercle
💡Trapezoid Line
💡Subclavian Groove
💡Coracoclavicular Ligament
💡Sternoclavicular Joint
Highlights
The clavicle is also known as the collar bone and is a long bone.
It lies in front of the root of the neck and takes part in the formation of the shoulder girdle.
The clavicle is the only long bone in the body that lies horizontally.
This bone has no medullary cavity, which is a peculiarity of the clavicle.
The clavicle is the first bone to start ossifying and transmits weight from the upper limb to the trunk.
It assists in the movement of the arm above the level of the shoulder.
The clavicle consists of the shaft, acromial end, and sternal end.
The shaft is divided into the lateral 1/3 and medial 2/3.
The lateral 1/3 presents two surfaces and two borders, with the superior surface being subcutaneous.
The inferior surface of the lateral 1/3 has the conoid tubercle, which gives attachment to the conoid part of the coracoclavicular ligament.
The trapezoid line runs obliquely and laterally, providing attachment to the trapezoid part of the coracoclavicular ligament.
The medial 2/3 of the clavicle has four surfaces, including a rough, convex anterior surface and a smooth, concave posterior surface.
The inferior surface of the medial 2/3 presents the costal impression, which gives attachment to the costoclavicular ligament.
The acromial end is flat with an oval facet that articulates with the acromion process of the scapula.
The sternal end is quadrangular and articulates with the clavicular notch of the manubrium, connecting to the sternoclavicular joint.
Transcripts
[Music]
clavicle the clavicle is also known as
the collar bone and is a long bone it
lies in front of the root of the neck
and takes part in formation of the
shoulder girdle it is a subcutaneous
bone and is the only long bone in the
body that lies
horizontally the peculiarity of this
bone is that it has no medular cavity it
is the first bone to start osificante
contact with the trunk transmits weight
from the Upper Limb to the trunk and
assists in movement of the arm above the
level of the
shoulder the clavicle consists of the
shaft a chromal end and the sternal end
the shaft is divided into the lateral
1/3 and medial 2/3 the lateral 1/3
presents with two surfaces and two
borders the superior surface is
subcutaneous and the inferior surface is
rough and has the conoid tubercle which
lies close to the posterior border and
gives attachment to the conoid part of
the coracoclavicular
ligament the trapezoid line which is an
oblique Ridge which runs forwards and
laterally towards the acromial end and
gives attachment to the trapezoid part
of the coraco clavicular
ligament now coming to the anterior
border it is concave and bears the
deltoid tubercle the posterior border is
convex the medial 2/3 presents with four
surfaces the anterior surface is rough
and convex the upper surface the
posterior surface is smooth and concave
and the inferior surface presents with
the coastal impression that gives
attachment to the coastal clavicular
ligament and the subclavian
Groove lav pectoral fascia is attached
to the margins of the subclavian group
the nutrient foramin is directed
laterally and is present on the lateral
part of the subclavian
Groove a chromal end this end is flat
and has an oval facet which articulates
with the clavicular facet on the
acromium process of the scapula the
margins of which gives attachment to the
capsular ligament of the
acromioclavicular joint
the sternal end is quadrangular and it
articulates with the clavicular notch of
the manubrium
sterni the upper part gives attachment
to the interclavicular ligament capsular
ligament of the sternoclavicular joint
and articular disc of the
sternoclavicular joint
浏览更多相关视频
3D Anatomi Tulang : Os Clavicula (tulang selangka)
Clavicle Bone Anatomy Animation : Bony landmarks and Development
Osteology of Hip bone I Side side determination | Anatomical Position | Attachments | Applied
Humerus bone osteology Animation : Bony mandmarks, Development and Clinical anatomy 🦴🦴🦴
The Skeletal System
BONES OF THE SKULL - LEARN IN 4 MINUTES
5.0 / 5 (0 votes)