Clavicle Anatomy Animation | General features, Osteology, Attachments, Development, clinical anatomy
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- čas přidán 7. 09. 2024
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The clavicle is an elongated, S-shaped bone that rests horizontally at the sternum across the upper part of the ribcage, and the acromial end of the scapula. This bone plays an essential role in everyday functional movement, serving as the connection between the axial skeleton and the pectoral girdle. As a result, the clavicle is able to act as a brace for the shoulder, allowing weight to be transferred from the upper limbs to the axial skeleton.
Articulations
Due to the clavicle’s structure, there are only two planar diarthrosis articulations that can be found. This type of articulation is also known as a ‘double plane joint’ - where two joint cavities are separated by a layer of articular cartilage.
Acromioclavicular Joint
The first is the acromioclavicular joint, which is formed by the acromial end of the clavicle and the acromion of the scapula respectively. It enables slight gliding movement about the shoulder region. The synovial joint is surrounded by a capsule of articular cartilage filled with intra-articular synovium.
From infancy, the articular cartilage starts off as hyaline cartilage, but soon develops into fibrocartilage (at the scapula acromion and the clavicle acromial end at ages 17 and 24, respectively).The acromioclavicular ligament forms a strong connection between the clavicle and the scapula acromion, which restricts movement about the clavicle at its acromial end.
Bony Landmarks
Extremities
The orientation of the clavicle can be distinguished by its ends: a broad, flat acromial end (referred to as the lateral third); and a round pyramidal-like sternal end (referred to as the medial two-thirds). Each end has unique bony landmarks, depending whether the superior or inferior surface of the bone is viewed.
Superior Surface
The superior surface of the clavicle has a smooth appearance. The acromial facet can be seen at the far poster edge of the acromial end. It appears as a small flattened oval surface and enables the clavicle to articulate about the acromion of the scapula in the acromioclavicular joint.
Inferior surface
In contrast, the inferior surface of the clavicle is quite rough and has many prominent lines, indicating sites where muscle and ligaments may attach to the bone. These can be divided into three bony landmarks:
The sternal facet, found far at the edge of the sternal end. It is shaped like a triangle, with a posterior tip and an anterior base, and forms the sternoclavicular joint.
The costal tuberosity, located at the sternal end of the bone. It is distinguished as a broad rough surface over 2 cm in length, and is the site where costoclavicular ligament attaches.
The conoid tubercle, which is found more laterally towards the acromial end. It appears as a rough eminence found where the flat portion of the clavicle meets the tip of the pyramidal sternal end. This feature acts as the site where the conoid ligament attaches.
Muscle Attachments
A total of five muscles are attached to the clavicle, found distributed at either the lateral third or medial two thirds of the bone.
Two muscles are attached to the lateral third of the clavicle:
The trapezius muscle, which is attached along the posterior surface of the bone.
The deltoid muscle, where the anterior portion of the muscle is attached to the periosteum at the anterior surface of the bone.
Three muscles are attached to the medial third of the clavicle:
The sternocleidomastoid muscle, where the muscular clavicular head of the muscle is attached to the superior surface of the bone.
The pectoralis major muscle, which is attached to the anterior surface of the bone.
The subclavius muscle, which is attached to a groove found in the middle of the bone’s posterior surface. From there, the muscle extends into both lateral and medial areas of the clavicle.
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📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- t.me/bhanuprakashdr
I have completed my 3 rd yr ... But just start revising Anatomy .. thanks a lot .. love from Kashmir ♥️.
🤝🤝🤝
I am also from Kashmir😍
Your animation gives clear pictures of the nutrient foramen, and subclavian groove, etc. Thank you for your video.
🤝🤝🤝
I don't know how to thank you guys. You guys are doing a great job.
Much appreciated!
Very nice and completely understanding in short time. Very nice and helpful.. Thank you so much
Ur most welcome
Love from Pakistan.
A great effort, makes study much easier
Everything in short time,, awesome
Glad you liked it!
Thanks......A lot I have cleared so many doubts from this video ....🙏🙏😃😃😃
Glad to hear that
Sir, I have a fracture in my collarbone. I have had an operation. I have been able to work for 2 months from Kobe. I work hard.
THE BEST 💜😭
Thanks mam
It's good 😊😊
🤝🤝🤝
Crystal clear 👍🏻
Thank u so much
Thank you! This video is super helpful!
Ur most welcome ☺️
Very much conceptual clear video
Thank u
If life were predictable it would cease to be life, and be without flavor.😃🥰😃🥰
Thanks for the description information. ..
Ur most welcome
Lucidly explained ❤️👍
Tysm
Thank u sir 🔥🔥bdc ub easy lagne lagi
Nice sir
If it moves widout pain from the middle the end goes a bit down can it be fixed? If anybody knows?
Why there is no medullary cavity in bone marrow?
My collarbone is broken. After how many days I will be able to work again after the operation


Live translation
Thankuuu
Doctors My right collarbone break 3 yeras ago Can I start gym and weight lifting
Yes
Tq very much
Most welcome
It is right clavicle
Why clavicle has two primary centres of ossification???
love you
I need subtitles .. otherwise some words pronounciation I can't understand
Best
Scapula video plzz!!!
Plc hindi language explain can't understand some students
Sure
Nice Is Voice Ki Aur Videos Kaha Milay Gi Please Reply Sir
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Why i have no prominent collor bones😢
sir app ke notes hai
l need all part of body that you should said
😇
Kaise andar kare