Upper Extremity Joints

Dr. Banafshe Esmaeilzade, M.S., Ph.D.Deptartment of Anatomy Bushehr Univ. of Medical Sciences

Anterior Sternoclavicular: prevents upward displacement of clavicle

Posterior Sternoclavicular: prevents upward displacement of clavicle

Interclavicular: prevents lateral displacement of clavicle

Costoclavicular: prevents lateral and upward displacement of clavicle

Trapezoid, scm, L.sca, Rhomboid

Subclavius, pectoralis min.

Ant: serrator antPost: Trapezoid, Rhomboid

Movement

Superior Acromioclavicular Ligament Inferior Acromoclavicular Ligament Coracoclavicular Ligament

Conoid Trapezoid

Conoid Trapezoid

Superior Glenohumeral Ligament Middle Glenohumeral Ligament Inferior Glenohumeral Ligament Coracohumeral Ligament

RotatorCuffant view

AcromialBursa >>

Shoulder action = ?Shoulder muscle(s) = ? Abduction Deltoid

Supraspinatus

Shoulder action = ?Shoulder muscle(s) = ?

Flexion

Ant DeltoidUpper Pect MajorCoracobrach.

Shoulder action = ?Shoulder muscle(s) = ?

Adduction

Pect. Major (both)CoracobrachialisLatissimus DorsiTeres Major

Shoulder action = ?Shoulder muscle(s) = ?

Extension Lats Teres MajorPost. Deltoid Pectoralis Major (lower)Teres minor

Shoulder action = ?Shoulder muscle(s) = ?

External Rotation

InfrspinatusTeres MinorPost. Deltoid

Internal Rotation External Rotation

Internal Rotation

Subscapularis, Ant. Deltoid, Pect, Major, Lats. And Teres Major

External Rotation

External Rotation

Internal Rotation

Abduction (to work the supraspinatus)

Articulations of elbow joint are; Capitulum

(lateral condyle of humerus) with the radius

Trochlea (medial condyle of humerus) with the ulna

Ulnar Collateral Ligament(UCL) Radial Collateral Ligament Annular Ligament: stabilizes and

encircles the head of the radius

Movement

Superior Radioulnar: pivot joint moving in a ring formed by the ulna and annular ligament

Middle Radioulnar: shaft of bones held together by the interosseus membrane

Distal Radioulnar: pivot joint formed by the head of ulna with a notch on the radius

Articulation of the radius and ulna with the scaphoid, lunate, and triquetral

Ulnar Collateral Ligament Radial Collateral Ligament Volar Radiocarpal Dorsal Radiocarpal

FlexionExtentionAbduction AdductionCircumduction

Palmar Dorsal

DorsalPalmar

Volar plate Deep Transverse Metacarpal

Collateral

Collateral Volar Plate

Collateral Volar Plate