Chapter 6 Upper Extremities

SECTIONAL IMAGING ANATOMYCHAPTER 6 UPPER EXTREMITIES

1.0 Osseous component2.0 Muscular component3.0 Joint4.0 Sectional Anatomy of Upper ExtremitiesContent

1.0 Osseous ComponentHumerusRadius, ulna8 carpal bones5 metacarpal bonesPhalanges

HumerusAnteriorPosterior

Forearm

Hand

2.0 Muscular ComponentMuscles for the movements of humerusMuscles for the movements of radius-ulnaMuscles for the movements of hand.

Muscles for the movements of humerusDeltoidSubscapularisSupraspinatusInfraspinatusTeres majorTeres minorTricepsBicepsPectoralis majorRotator cuffSubscapularisSupraspinatusInfraspinatusTeres Minor

Anterior

Posterior

Rotator Cuff

Rotator Cuff

Anterior

Posterior

Muscles for the movements of the forearmBiceps brachii, brachialisFlex forearm anterior

Brachioradialis

Triceps brachiiExtend forearm posterior

Pronator quadratus, Pronator teres Pronate of forearm anterior

Supinator Supinate the forearm

AnconeusPosterior extends forearm to pronates ulna.

Anterior

Posterior

Muscles for the movements of the handAnterior compartmentFlexorsPosterior compartmentExtensors

3.0 JointElbow jointWrist joint

Elbow jointDiarthrodial (synovial)Hinge jointHumerus, radius,ulnaPivot jointProximal radius and ulnaArticular capsuleLigaments of the Elbow:- Annular ligament- Radial (external) collateral ligament- Ulnar (internal) collateral ligament

Anterior

Anterior

Lateral

Wrist jointRadius, ulna, carpal jointSynovialCondyloidIntercarpalCarpal, metacarpalsLigaments of the Wrist:- Dorsal (posterior) carpal- Palmar (anterior) carpal- Radial (external) collateral- Ulnar (internal) collateral- Flexor retinaculum manus (transverse)

Anterior

Posterior

Tranverse section through the distal humerus4.0 Sectional Anatomy of Upper Extremities

Tranverse section through the elbow

Tranverse section through the elbow

Tranverse section through the elbow

Coronal section through the elbow

Tranverse section through distal forearm

Tranverse section through wrist

Coronal section through wrist

Referrence:The sectional anatomy learning system: concept.J.Applegate.W.B.Saunders.Thank you

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