This video outlines the anatomy of the clavicle, including its anatomical position, general features, side identification, muscular attachments, articulations, ligaments, and applied anatomy.

* ()الفصول (الطوابع الزمنية)
00:00 Intro (مقدمة)
00:22 Content (المحتوى)
00:55 Anatomical site of the clavicle (الموقع التشريحي للترقوة)
02:57 General features (المعالم العامة للعظمة)
17:37 Identification of the side (تحديد الجانب الأيمن أو الأيسر)
25:16 Muscular attachments (اتصالات العضلات)
28:17 Articulations (المفاصل)
30:34 Ligaments (الأربطة)

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The weakest point of the clavicle is the 2/3
1/3 (because there is a change in the CURVATURE of the clavicle at this point).
Fracture at this point leads to:
1. The lateral fragment (including the whole upper limb) will be: ⬇↗
a. Depressed ⬇ By gravity. (الجاذبية الأرضية)
b. Pushed forwards + Medially rotated ↗ By the muscles attached to the bicipital
groove of the humerus.
2. The medial fragment is elevated ⬆ By the sternocleidomastoid muscle.

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1. The clavicle is the first bone to ossify—around the fifth to seventh weeks in utero (Moseley, 1968; Ogata and Uhthoff, 1990). It is also the last bone to fully unite—around the 22nd to 25th years (Rockwood et al., 2006; Kim and McKee, 2008).

2. Intramembranous ossification directly converts the mesenchymal tissue to bone, forming the flat bones of the skull, clavicle, and most cranial bones.

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1. ًWhich muscle is attached to the inferior surface of the clavicle?
A. Subclavius
B. Sternomastoid
C. Deltoid
D. Pectoralis major

2. ًWhich ligament is attached to the trapezoid line of the clavicle?
A. Costoclavicular
B. Coracoacromial
C. Coracoclavicular
D. Conoid

3. The anterior surface of the medial half of the clavicle shaft gives origin to which of the following structures?
A. Deltoid
B. Tapezius
C. Sternocleidomastoid
D. Pectoralis major

4. How many joints does the clavicle share in?
A. 1
B. 2
C. 3
D. 4

5. The joint formed by the combination of the clavicular notch of the sternum and the sternal end of the clavicle is called which of the following joints?
A. Sternoclavicular
B. Acromioclavicular
C. Glenohumeral
D. Manubriosternal

6. Which of the following ligaments is responsible for suspending the weight of the upper limb from the clavicle?
A. Sternoclavicular
B. Costoclavicular
C. Acromioclavicular
D. Coracoclavicular

7. Which of the following is the earliest bone to ossify in the body?
A. Humerus
B. Radius
C. Ulna
D. Clavicle
E. Femur

8. What is the position of the conoid tubercle concerning the trapezoid line?
A. Posterior
B. Anterior
C. Medial
D. Lateral



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#clavicle
#identification_of_the_side
#muscular_attachments
#articulations
#coracoclavicular_ligament