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Humerus Bone – Anterior Markings

Anterior Markings of the Humerus Bone:

  1. image descriptionHead (Caput humeri) is a large, rounded, prominence that extends medially from the bone’s proximal end. It articulates with the glenoid fossa of the scapula to form the glenohumeral joint or shoulder joint.
Head of humerus
Head of humerus
Head of humerus
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  1. image descriptionGreater tubercle (Tuberculum majus) is a large, roughened area located lateral to the head. The supraspinatus, infraspinatus, and teres minor muscles attach to this elevation.
Anterior Humerus
Greater tubercle
Greater tubercle
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  1. image descriptionLesser tubercle (Tuberculum minus) is a roughened area located medial to the greater tubercle. It serves as the insertion site for the subscapularis muscle.
Anterior Humerus
Lesser tubercle
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  1. image descriptionIntertubercular Groove or Sulcus (Sul-cus intertubercularis) is a narrow, longitudinal depression between the greater and lesser tubercles. This indentation, which is also called the bicipital groove, is a passageway for the tendon of the long head of the biceps brachii. The pectoralis major, teres major and latissimus dorsi muscles also attach here.
Anterior Humerus
Intertubercular Groove or Sulcus
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  1. image descriptionAnatomical Neck (Collum anatomicum) is a grooved constriction between the head and tubercles that serves as an attachment point for the articular (joint) capsule.
Anterior Humerus
Anatomical Neck
Anatomical Neck
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  1. image descriptionSurgical Neck (Collum chirurgicum hu-meri) is an region inferior to the tubercles where the bone narrows and fractures often occur.
Anterior Humerus
Surgical Neck
Surgical Neck
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  1.  image descriptionShaft or Body (corpus humeri) is the elongagted, cylinder shaped middle portion of the bone. Its relatively smooth surface is the insertion point for muscles that move the upper arm and the origin point for muscles that move the lower arm.
Anterior Humerus
Shaft or Body
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  1. image descriptionDeltoid Tuberosity (Tuberositas deltoidea) is a raised, roughened area located on the lateral side of the shaft at its midpoint. It is an attachment point for the deltoid muscle.
Anterior Humerus
Deltoid Tuberosity
Deltoid Tuberosity
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  1. image descriptionLateral Epicondyle (Epicondylus lateralis) is a rounded projection at the distolateral end of the humerus. The posterior surface of the lateral epicondyle serves as an attachment point for some of the muscles that extend the wrist and fingers of the hand.
Anterior Humerus
Lateral Epicondyle
Lateral Epicondyle
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  1. image descriptionLateral Supracondylar Ridge (Crista su-pracondylaris lateralis) is the roughened margin located above the lateral epicondyle. The brachioradialis muscle attaches along this edge of the bone.
Anterior Humerus
Lateral Supracondylar Ridge
Lateral Supracondylar Ridge
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  1. image descriptionMedial Epicondyle (Epicondylus medialis) is a rounded projection at the distomedial end of the humerus. Some of the muscles that flex the forearm, wrist, and fingers attach to anterior surface of this marking.
Anterior Humerus
Medial Epicondyle
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  1. image descriptionCapitulum (Capitulum humeri) is a small, knob-like prominence on the distolateral end of the humerus. It articulates with the head of the radius bone at the elbow joint.
Anterior Humerus
Capitulum
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  1. image descriptionTrochlea (Trochlea humeri) is a pulley-shaped formation located medial to the capitulum. This region articulates with the trochlear notch of the ulna bone at the elbow joint.
Anterior Humerus
Trochlea
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  1. image descriptionCoronoid Fossa (Fossa coronoidea) is a depression located superior to the anterior aspect of the trochlea. This region provides space for the coronoid process of the ulna when the forearm is flexed.
Anterior Humerus
Coronoid Fossa
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  1. image descriptionRadial Notch (Fossa radialis) is a small depression located superior to the capitulum. This region provides space for the head of the radius when the forearm is flexed.
Anterior Humerus
Radial Notch
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