[Music] hello and welcome to the jung-hwa the pod this is the first video in our astrology series and today we'll learn about the clavicle its parts muscle and ligament attachments the fracture classification and a few key points about the bone the clavicle is the first bone to ossify and its sternal end is the last ossification center to fuse in the body the clavicle functions as a strut bracing the shoulder from the trunk and allowing the shoulder to function at optimal strength the clavicle is a s-shaped cylindrical bone that lies horizontally in the body it has an anterior border and a posterior border the rounded medial sternal end and the flattened lateral acromion and two surfaces superior and inferior surface the superior surface is smooth and subcutaneous and the inferior surface is rough and have the subclavian groove medium two-thirds of the bone is circular in section and convex anteriorly and has an anterior and posterior surface instead of borders the lateral 1/3 is flattened in section and convex posteriorly so this is a right-sided clavicle medially it articulates with the manubrium at the sternoclavicular joint and to the first costal cartilage by the postal clavicular ligament literally it articulates with the acromion at the acromioclavicular joint and to the coracoid process by the coracle clavicle ligament anterior surface of the medial one-third gives origin to the clavicle ahead of the pectoralis major muscle post you to that there is a region of sternocleidomastoid muscle the little one-third of the anterior border gives origin to the anterior fibers of the deltoid muscle the little one-third of the posterior border provides insertion to the trapezius muscle if you look at the inferior surface the costo clavicle ligament is attached to an oval impression at the medial end of the inferior surface the posterior surface of the medial one-third gives origin to the sternohyoid muscle near its medial end subclavius muscle is inserted into the subclavian groove on the surface later third of the inferior surface presents a cone oi tubercle and a trapeze aldrich which provides attachment to the coronoid and trapezoid parts of the coracle a buckler ligaments respectively clavicle is the most common fractured bone and mechanism of the injury is fall on the shoulder or an outstretched hand the weakest point is the junction of medial 2/3 and the little 1/3 the clavicle fractures are classified by the location of fracture and the proximal middle or distal third of the bone according to the almond classification Group one includes fracture of the middle third 80% of the clavicle fractures occur in the middle third and most of these are amenable to closed management group two includes fracture of the distal third this is sub classified according to the location of the coracle clavicle or ligaments relative to the fracture the type 1 includes minimal displacement fractures with ligaments intact that interleague amyntas fracture between the coronoid in trapezoid or between the coracle clavicular and acromioclavicular ligament type 2 includes displaced fractures in the fracture line middle to the coracle clavicular ligaments these has a higher incidence of the non-union and are further classified into type 2a and 2b in to in fractures the coronoid and the trapezoid ligaments are attached to the distal segment in type Dubey fractures the coronoid ligament is Dawne but the trapezoid ligament is attached to the distal segment the type 3 includes fracture of the articular surface of the acromioclavicular joint with no ligamentous injury and finally the group 3 includes fracture of the proximal third of the clavicle these are usually minimally displaced of the costal clavicle and ligaments remain intact group threes against sub classified into types one two five so this was all about the osteology of the clavicle and this is the minimum that one must know before facing the vivaz we'll be back with more videos in the osteology series soon if you like this video then please like and subscribe to our channel on youtube and for more topics and daily quiz on orthopaedics please follow and like our page on Facebook the young orthopod and subscribe to our blog the young water poured on blogger links are in the description see you soon [Music]