THE ARTICULATIONS OF THE UPPER LIMB 



213 



The ulna 

 Head of the ulna t 

 Capitulum ulnae \ 



Triangular fibrocartilage 

 Discus articularis 



Styloid process of the ulna 



Proc. styloideus ulnae 



Lunar, or semilunar, bone 

 Os lunatum 

 Ppsterior or dorsal Intercarpal ligaments 



Ligg. intercarpea dorsalia 



Pyramidal or cuneiform bone 



Os triquetrum 



Os magnum or capitate bone 



Os capitatum 



Posterior or dorsal Intercarpal ligaments 



Ligg. inteicarpea dorsalia 



Unciform bone - 



Os hamatum 



Posterior or dorsal carpometacarpal.. 

 ligaments 



Ligg. carponietacarpea tlorsalia 



Fifth metacarpal bone 

 Os metacarpale V. 



The radius 



Carpal articular surface 

 Facies articularis carpea 



Scaphoid bone 



Os naviculare 



External lateral ligament of the wrist-joint 

 Lig. collaterale carpi radiale 



Trapezoid bone 



., Os multangulum minus 



Trapezium Os multangulum majus 



Ppsterior or dorsal intercarpal ligaments 



Ligg. intercarpea dorsalia 



Posterior or dorsal carpometacarpal 



ligaments Ligg. carponietacarpea di-rsdlu 



Capsule of the carpometacarpal joint 



of the thumb 



Capsula articulationis carpo- 

 metacarpeae pollicis 



- First metacarpal bone 

 Os metacarpale I. 



Ppsterior or dorsal proximal intermetacarpal ligaments 



Ligg. basium dorsalia 



FIG. 447. THE SHORT POSTERIOR OR DORSAL LIGAMENTS OF THE TRANSVERSE CARPAL 

 ARTICULATION, AND OF THE CARPOMETACARPAL AND INTERMETACARPAL ARTICULATIONS. 

 (THE RIGHT CARPUS WITH THE DISTAL EXTREMITIES OF THE BONES OF THE FOREARM 

 AND THE PROXIMAL EXTREMITIES OF THE METACARPAL BONES.) 



The distal radio-ulnar articulation and the radiocarpal and transverse carpal articulations have been 

 opened by the removal of the posterior ligaments, and the bones of the forearm have been drawn 

 a little upwards and away from the carpus. 



Pyramidal or cuneiform bone 



Os triquetrum 



Lunar, or semilunar, bone Os lunatum 

 Interosseous intercarpal ligament 



Li:;, intercarpeuni interosseum 

 Scaphoid bone Os naviculare 



Capsule of the radiocarpal articulation 



(anterior or palmar ligament of 



the wrist-joint) 



Capsula articulationis radiocarpeae 



Canal of the carpus Canalis 



Tendon of the flexor carpi 

 radialis muscle 



Capsule of the carpometa 



carpal joint of the thumb 



Capsula articulationis 

 carpometacarpea? pollicis 



First metacarpal bone 



Ridge or tuberosity of the trapezium 



Tubcrculum oasis multanguli majoris 



Anterior annular ligament of the wrist 



Fold of the synovial membrane Plica synovialis 

 / Triangular flbrocartilage Discus articnlaris 



/ Capsule of the radiocarpal articulation (posterior* 



/ / or dorsal ligament of the wrist-joint) 



Capsula arliciilationis radiocarpea: 



, Carpal articular surface 



its articularis carpea 



Communication between 



the radiocarpal and the 



pisipyramidal articulation 



The radius 



\ 



The ulna 



Pisiform bone 

 Os pisi forme 



Fifth metacarpal bone 



FIG. 448. THE ARTICULAR SURFACES AND. THE ATTACHMENTS OF THE CAPSULE OF THE 

 RADIOCARPAL ARTICULATION OR WRIST-JOINT ; CANALIS CARPI, THE CANAL OF THE CARPUS. 

 (THE RIGHT CARPUS WITH THE METACARPAL BONES ; ANTERO-SUPERIOR ASPECT.) 



The distal extremities of the bones of the forearm have been turned to the ulnar side, after division of 

 the capsule of the wrist-joint with the exception of the internal lateral ligament. 



Articulatio manus Articulations of the hand. 



