ANATOMY OF CLAVICLE BONE (PART - 1)
INTRODUCTION :- • long S shaped bone. • Supports shoulder that arms can swing away from the trunk. • Transmits weight of the limb to the sternum. • Only long bone that lies horizontally and ossifies in membrane. • subcutaneous. • First bone to start ossifying. BONE DIVISION 1. Cylindrical shaft 2. Two ends lateral and medial. GENERAL FEATURES SHAFT :- divided in two parts medial 2/3rd and lateral 1/3rd 1. LATERAL 1/3rd :- •Flattened from above downwards. •Two borders 1. Anterior :- concave forwards 2. Posterior :- convex backwards • Two surfaces:- 1. Superior :- subcutaneous 2. Inferior :- presents elevation called CONOID TUBERCLE and TRAPEZOID RIDGE. 2. MEDIAL 2/3rd :- rounded having four surfaces. 1. Anterior :- convex forwards 2. Posterior :- smooth 3. Superior :- Rough in its medial part ...