212 



THE ARTICULATIONS OF THE UPPER LIMB 



The radius 



Anterior or palmar ligament of the wrist-joint 



Lig. radiocarpeum volare 



Tendon of the flexor carpi radialis muscle 



Radial attachment of the anterior annular 



ligament of the wrist 

 Ridge or tuberosity of the trapezium 

 Capsule of the carpometacarpal' 



joint of the thumb 



Capsula articulationis carpo- 



metacarpeae pollicis 



Palmar or radiate ligament^-' 



of the carpus 

 Lig. carpi radiatum 



The ulna 



Capsule of the inferior radio- 



ulnar articulation 

 Capsula articulationis 

 radio-ulnaris distalis 



Lunar (or semilunar) bone 

 Os lunatura 



Internal lateral ligament of the wrist- 

 joint Lig. collaterale carpi ulnare 



Pisiform bone Os pisiforme 



- Tendon of the flexor carpi ulnaris muscle 



Pisi-uncinate ligament 

 Lig. pisohamatum 

 Pisimetacarpal ligament 

 Lig. pisometacarpeum 

 Hook of the unciform bone 

 Hamulus ossis hamati 



Os magnum or capitate bone 

 Os capitatum 



V, 



Radiations of the tendons of the flexor carpi 



,. radialis and the flexor carpi ulnaris muscles 



to the base of the third metacarpal bone 



FIG. 445. THE ANTERIOR OR PALMAR LIGAMENTS OF THE RIGHT CARPUS, SHOWN BY THE REMOVAL OF THE 

 ANTERIOR ANNULAR LIGAMENT OF THE WRIST : LIGAMENTUM RADIOCARPEUM VOLARE, ANTERIOR OR 

 PALMAR LIGAMENT OF THE WRIST-JOINT ; LIGAMENTUM CARPI RADIATUM, ANTERIOR OR RADIATE 

 LIGAMENT OF THE CARPUS. 



The radius^ 



Sigmoid cavity of the radius 



Incisura ulnaris 



Lunar (or semilunar) bone 



Os lunatum 



Anterior ligament of the wrist joint 

 Lig. radiocarpeum volare 



Scaphoid bone Os naviculare 



Tuberosity of the scaphoid bone 

 Tuberculum ossis navicularis 

 External lateral ligament of the 

 transverse carpal articulation (i) 



Groove of the trapezium 

 Capsule of carpometacarpal joint of thumb (, o 



Os magnum, or capitate bone (3) 

 Palmar or radiata ligament of carpus (4) 

 Carpometacarpal articulation 



of the thumb 

 Articulatio carpometacarpea pollicis 



Anterior or palmar carpometacarpal " 



ligaments 

 Ligg. carpometacarpea volaria 



Capsule of the inferior radio-ulnar articulation 



/i Capsula articulationis radio-ulnaris distalis 



Head of the ulna 



.,' Capituhim ulnae 



The ulna 



Triangular fibrocartilage 



Discus articularis 



Styloid process of the ulna 

 - Proc. styloideus ulnae 



Internal lateral ligament of the wrist-joint (5) 

 Communication between the radiocarpal and 



the pisipyramidal articulation 

 Pyramidal or cuneiform bone o.< triquetram 

 Capsule of the pisipyramidal articulation (6) 

 Pisiform bone Os piMforme 



Pisi-uncinate ligament Lig. pisohamatum 

 Hsimetacarpal ligament Lig. pisometacarpeum 



Hook Of the unciform bone- Hamulus ossis hamali 

 Anterior or palmar carpometacarpal ligament 

 Lig. carpometacarpeum volare 

 Second intermetacarpal articulation 

 Articulatio intermetacarpea II. 



4 /5 



Anterior or palmar proximal intermetacarpal ligaments 



Ligg. basium volaria 



(0 Lig. intercarpeum volare. [Connecting the tuherosities of ihe scaphoid bone and the trapezium. TR.] 



(2) Capsula articulationis carpo- (3) Os capitatum (4) Lig. carpi radiatum (6) Capsula articulationis ossis 



metacarpea? pollicis ( 5 ) Lig. collaterale carpi ulnare pisifornns 



FIG. 446. THE ANTERIOR OR PALMAR LIGAMENTS OF THE INTERCARPAL (TRANSVERSE CARPAL) AND CARPO- 

 METACARPAL ARTICULATIONS, AFTER THE ANTERIOR ANNULAR LIGAMKNT OF THE WRIST AND THE 

 TENDONS OF THE FLEXOR CARPI RADIALIS AND FLEXOR CARPI ULNARIS HAVE BEEN ENTIRELY REMOVED. 



Tho radiocarpal and distal radio-ulnar articulations have been opened, the trinngulnr fibrocartilage and the internal lateral 

 ligament of the wrist-joint being left intact ; the bones of the forearm have been separated from one another and from 

 the carpus ; the pisipyramidal articulation, the carpometacarpal articulations of the thumb and the ring finger, and the 

 second intermetacarpal articulation, have been partially opened. 



Articulatio manus Articulations of the hand. 



