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Upper Limb Part 1: Bones & Joints, The Brachial Plexus. Nov. 8, 2005. Outline. Bones of the Upper Limb Joints of the Upper Limb Introduction to the Brachial Plexus. Thoracic cage and shoulder girdle. Anterior view. c/o CSU/Glaxo. Clavicle. Lateral. Medial.
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Upper Limb Part 1:Bones & Joints, The Brachial Plexus Nov. 8, 2005
Outline • Bones of the Upper Limb • Joints of the Upper Limb • Introduction to the Brachial Plexus
Thoracic cage and shoulder girdle Anterior view c/o CSU/Glaxo
Clavicle Lateral Medial Superior view,right Subclavian groove Inferior view, right
Lateral Medial Articulation withmanubrium Clavicle “On edge” view
Scapula Medial Lateral Costal (anterior) view, right Inferior
Scapula Lateral view Posterior view c/o CSU/Glaxo
Scapula Superior Border Superior Angle Lateral Angle Medial Border Lateral Border Costal (anterior) view, right Inferior Angle
Lateral Medial Subscapular fossa Scapula Costal (anterior) view, right
Spine Scapula Medial Lateral SupraspinousandInfraspinousfossas Doral (posterior) view, right
Coracoid process Acromion Scapula Medial Lateral Doral (posterior) view, right
Lateral Medial Neck Glenoidfossa Scapula Acromion Coracoid process Costal (anterior) view, right
The Humerus Greater & lesser tubercles Greater tubercle Head Inter- tubercular groove Anatomical neck Surgical neck Deltoid tuberosity Lateral & medial epicondyles Posterior Anterior
Anterior view c/o CSU/Glaxo
Articulations of Shoulder Joint • Sternoclavicular (sternum – clavicle) • Acromioclavicular (clavicle – scapula) • Glenohumeral (clavicle – humerus)
Acromioclavicular Joint Acromioclavicular lig. Coracoclavicular ligs. Coracoacromial lig. Anterior
Glenohumeral Joint Capsular lig.
Movements at the Shoulder Joint • Abduction & elevation: • Humeral abduction (120 degrees; 2/3) • Scapular rotation (60 degrees; 1/3) • Clavicular rotation • Internal & external rotation • Flexion & extension • Adduction • Movements of scapula on thorax
Head Olecranon process Neck Coronoidprocess Tuberosity RADIUS RADIUS ULNA Head Spinous process Spinous process Posterior Anterior
The Elbow HUMERUS Coronoidfossa Capitulum Trochlea Radial notch Trochlear notch Head of radius Coronoidprocess RADIUS ULNA
The Elbow Annular lig. of radius
Forearm Pronated Forearm Supinated (anatomical position) Pronation & supination - humerus & radius
Flexion & Extension Humerus, ulna & radius Radial collateral ligament Annular ligament
Tendon of biceps brachii Ulnar collateralligament
3 capitate hamate trapezoid pisiform trapezium triquetrum Scaphoid lunate 2 4 Right hand palmar side 5 (digiti minimi) 1 (pollex) phalanges metacarpals carpals
The Brachial Plexus • Sensory and motor to upper limb • Anterior rami of C5 – T1 • Pass out of neck between clavicle & scapula, into axilla • Roots • Trunks • Divisions • Cords • Nerves
Teres Major Main Artery to the Upper Limb Subclavian a. – until it crosses 1st rib Axillary a. – until it crosses teres major (has 3 parts – more later) Brachial a. – until it gets to the cubital fossa Subclavian a Axillary a. Brachial a