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Bony landmarks


The clavicle is the most prominent bone and is easily detectable because it lies subcutaneously.Its medial part is convex and the lateral
third is concave. Its medial end (sternal end) is bulbous and articulates with the sternum.The lateral end is flattened and articulates with
prominence can be felt.

This is the scapula’s coracoid process, of which only the tip and the medial surface are palpable. They form the points of origin for the short head of the biceps brachii muscle and for the coracobrachialis muscle respectively.Place the finger on the coracoid process and go 1 cm down. Now move the finger laterally until a sharp bony structure is reached. This is the lesser tuberosity of the head of the humerus.Palpate this bone and feel for its lateral border – the medial lip of the intertubercular sulcus.

Just lateral to this border lies the bicipital groove that contains the long head of the biceps.This intertubercular sulcus is palpable with the
thumb placed flat on it and during rotatory movements of the humerus. To define the bicipital groove, use the subject’s forearm as a lever and rotate the humerus laterally until the medial lip of the sulcus hits the thumb; then rotate the arm mediaJly until the lateral lip catches the thumb.At the lateral aspect of the sulcus a greater tubercle can be palpated. This is the greater tuberosity. When moving the palpating finger upwards a depression can be felt before the lateral border of the acromion is reached.

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