Slideshow: Humerus

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  • The Humerus

  • The humerus is the

    longest and

    strongest bone

    in the upper limbThe Humerus

  • It is the only bone in the arm

    It is a long boneThe Humerus

  • It may be divided into

    thirds along its

    lengthThe Humerus

  • It may be divided into

    thirds along its

    lengthThe Humerus

  • It may be divided into

    thirds along its

    length

    Proximal thirdThe Humerus

  • It may be divided into

    thirds along its

    length

    Proximal third

    Middle thirdThe Humerus

  • It may be divided into

    thirds along its

    lengthProximal third

    Middle thirdDistal ThirdThe Humerus

  • The Humerus

    articulates proximally

    at the Shoulder joint The Humerus

  • The Humerus

    articulates distally

    at the Elbow Joint The Humerus

  • The Humerus is

    expanded at either end The Humerus

  • The Humerus is

    expanded at either end

    There are a number of

    interesting projections The Humerus Right side

  • The Proximal HumerusPosterior ViewAnterior ViewThe Humerus Right side

  • The Proximal HumerusPosteriorAnteriorSuperior or Birds Eye ViewThe Humerus Right side

  • Head of HumerusPosterior ViewAnterior ViewThe Humerus Right side

  • Lesser TuberosityAnterior ViewSuperior ViewThe Humerus Right side

  • The Subscapularis muscle attaches to the Lesser Tuberosity of the Humerus

    It arises from the whole of the ventral surface of the scapula

    It adducts and internally rotates the arm SubscapularisThe Humerus

  • Bicipital GrooveAnterior ViewSuperior View

    The Humerus Right side

  • Bicipital GrooveThe Long Head of Biceps Tendon originates from the superior rim of the glenoid of the scapula

    It passes through the shoulder joint and enters the bicipital grooveThe Humerus

  • Bicipital GrooveThe Biceps muscles attaches distally to the radius

    It flexes the elbow joint and supinates the forearmThe Humerus

  • Greater TuberosityAnterior ViewPosterior ViewThe Humerus

  • Greater TuberositySuperior or Birds Eye ViewThe Humerus Anterior Posterior

  • Anterior Posterior Superior or Birds Eye ViewThe Humerus 3 muscles attach to the Greater Tuberosity

  • The Humerus 3 muscles attach to the Greater TuberositySupraspinatus

    Infraspinatus

    Teres Minor

  • Suprapinatus attaches to the upper part of the

    Greater Tuberosity of the Humerus Anterior Posterior Superior or Birds Eye View

    The Humerus

  • It arises from the

    Supraspinous Fossaof scapulaSuprapinatus attaches to the upper part of the

    Greater Tuberosity of the Humerus It abducts the armThe Humerus

  • Posterior ViewThe Humerus

    Infraspinatus attaches to the posterior part of the

    Greater Tuberosity of the Humerus

  • It arises from the

    Infraspinous Fossaof scapulaIt externally rotates

    the armInfraspinatus attaches to the posterior part of the

    Greater Tuberosity of the Humerus The Humerus

  • Posterior ViewThe Humerus

    Teres Minor attaches to the postero-inferior part of

    the Greater Tuberosity of the Humerus

  • The Humerus Teres Minor attaches to the postero-inferior part of

    the Greater Tuberosity of the Humerus Posterior ViewIt arises from the

    upper part of lateral

    border of the scapulaIt externally

    rotates the arm

  • Anterior View3 muscles attach to the bicipital groove and its margins

  • Anterior View

    Pectoralis Major attaches to the lateral lip of the bicipital groove

  • Anterior View

    Pectoralis Major attaches to the lateral lip of the bicipital groove

  • Anterior View

    Latissimus Dorsi attaches to the floor of the bicipital groove

  • Anterior View

    Latissimus Dorsi attaches to the floor of the bicipital groove

  • Anterior View

    Teres Major attaches to the medial lip of the bicipital groove

  • Anterior View

    Teres Major attaches to the medial lip of the bicipital groove

  • Anterior View

    Pnemonic for muscles attaching to the bicipital groove

    A Lady between two Majors

  • Anterior View

    Lady between two Majors

    Latissimus Dorsi

  • Anterior View

    Lady between two Majors

    Latissimus Dorsi between

    Pectoralis Major

  • Anterior View

    Lady between two Majors

    Latissimus Dorsi between

    Pectoralis Major

    Teres Major

  • Deltoid attaches to the lateral aspect of the shaft of the humerus

  • Deltoid attaches to the lateral aspect of the shaft of the humerus

  • Coracobrachialis attaches to the medial aspect of the shaft of the humerus

  • Coracobrachialis attaches to the medial aspect of the shaft of the humerus

  • Brachialis attaches to the anterior aspect of the distal half of the humerus

  • Brachialis attaches to the anterior aspect of the distal half of the humerus

  • Triceps Lateral Head

  • Triceps Lateral Head

    Triceps Medial Head

    arise from posterior shaft

  • Triceps Lateral Head

    Triceps Medial Head

    arise from posterior shaft

  • The Humerus The Distal HumerusAnterior ViewPosterior View

  • The Humerus Medial EpicondyleAnterior ViewPosterior View

  • The Humerus Medial EpicondyleMedial View

  • Medial Epicondyle gives attachment to the common flexor origin

    The following muscles attach hereAnterior View

  • Pronator teres

    Flexor carpi radialis

    Palmaris longus

    Flexor digitorum superficialis

    Flexor carpi ulnarisAnterior View

    Medial Epicondyle gives attachment to the common flexor origin

  • The Humerus TrochleaAnterior ViewPosterior View

  • The Humerus TrochleaMedial ViewInferior View

  • The Humerus TrochleaThe Trochlea articulates with the proximal Ulna at the elbow joint

    *

  • The Humerus Coronoid FossaAnterior ViewThe coronoid fossa articulates with the coronoid process of the ulna

  • Posterior viewOlecranon fossa

    The olecranon process of the ulna articulates with the olecranaon fossa

  • The Humerus CapitulumAnterior ViewPosterior View

  • The Humerus CapitulumThe Capitulum articulates with the head of the Radius at the elbow joint

  • The Humerus Radial FossaAnterior View

    The radial head articulates with the radial fossa in flexion of the elbow

  • posterior view

  • Medial epicondyleposterior view

  • Lateral supracondylar ridge

    posterior view

  • posterior viewLateral supracondylar ridge

    gives rise to

    Brachioradialis

  • posterior viewLateral supracondylar ridge

    gives rise to

    Brachioradialis

  • posterior viewLateral supracondylar ridge

    gives rise to

    Brachioradialis

  • posterior viewLateral supracondylar ridge

    gives rise to

    Extensor Carpi Radialis Longus

  • posterior viewLateral supracondylar ridge

    gives rise to

    Extensor Carpi Radialis Longus

  • Posterior viewLateral epicondyle

    gives attachment to the common extensor origin

  • Posterior viewExtensor Carpi Radialis Brevis

    Extensor Digitorum

    Extensor Carpi Ulnaris

    Extensor Digiti Minimi

  • Posterior view

    Anconeus muscle

    attaches just below the common extensor origin

  • Posterior viewAnconeus muscle

    attaches just below the common extensor origin

  • Nerves

  • There are 3 nerves closely related to the humerus

  • There are 3 nerves closely related to the humerusAxillary nerve

    touches the posterolateral aspect of the surgical neck of humerus

  • There are 3 nerves closely related to the humerusRadial nerve

    touches the lower end of the spiral groove on the lateral aspect of the lower part of the humeral shaft

  • There are 3 nerves closely related to the humerusUlnar nerve

    touches the posterior aspect of the medial epicondyle of humerus

  • There are 3 nerves closely related to the humerusAxillary nerve

    Radial nerve

    Ulnar nerve

    *