214 



THE ARTICULATIONS OF THE UPPER LIMB 



The ulna 



Ulna 



Vertical pouch of the synovial membrane 



of the distal radio ulnar articulation 



'Recessus sacciformis articulationis 



radio-ulnaris distalis 



Triangular fibrocartilage 

 Discus articularis 



Lunar, or semiluuar, bone Os lunatum _ 

 Interosseous intercarpal ligament 



Lig. intercarpeum interosseuin 



Internal lateral ligament of the wrist-joint - 



Lig. collaterale carpi ulnare 



Pyramidal or cuneiform bone Os triquetrum 

 Capsule of the transverse carpal articulation 



Capsula articulation!* manus 



Unciform bone -Oi hamatum 

 Os magnum or capitate bone -Os capitatum 



Carpometacarpal articulations of the ling and little finger* (i) "~" 



Interosseous carpometacarpal ligament (2) ~ 

 Intermetacarpal articulations = 



Articulationes intermetacarpeai 



Interosseous intermetacarpal ligaments 

 Ligg. basium interossea 



Metacarpo-phalangeal articulation 



of the little finger 

 Articulatio metacarpo-phalangea 



digiti V. ^ 



Lateral ligaments ,..- ' 

 Ligg. collateralia -~ 



Proximal interphalangeal articula- 

 tion of the little finger 

 Articulatio proximalis digiti V. *>. 



Lateral ligaments /-- 

 Ligg. collateralia " 



Distal interphalangeal articulation 



of the little finger 

 Articulatio distalis digiti V. 



Lateral ligaments 



Ligg. collateralia 



d) Articulatio carpometacarpea digiti IV. et V. 

 (2) Lig. carpometacarpeum interosseum 



The radius 



Radius 



The radiocarpal articulation or wrist-joint 



..Articulatio radiocarpea 

 ._. Interosseous Intercarpal ligament (3) 



-Scaphoid bone Os naviculare 



--External lateral ligament of the wrist-joint (4) 

 Transverse carpal articulation 



Articulatio mtercarpea 



- Trapezium Os multangulum majus 



Carpometacarpal articulation of thumb (5) 

 Interosseous intercarpal ligament 16) 

 Carpometacarpal articulations of the 

 index and middle fingers (7) 



Trapezoid bone 

 "~~--Os multangulum minus 



Interosseous intermetacarpal 



ligament 

 Lig. basium interosseum 



Intermetacarpal articulation 



Articulatio intermetacarpea 



Metacarpo-phalangeal 

 ~x articulation of the thumb 



Articulatio metacarpo- 

 phalangea pollicis 



v Sesamoid bone 

 Os sesamoideum 



Interphalangeal articulation 

 of the thumb 



Articulatio pollicis 



(3) Lig. iritercarpeum interosseum 



(4) Lig. collaterale carpi radiale 



(5) Articulatio carpometacarpea pollicis 



(6) Lig. intercarpeum interosseum 



(7) Articulatio carpometacarpea digiti II. et III. 



V, 



FIG. 449. ARTICULATIO RADIO-ULNARIS DISTALIS, DISTAL RADIO-ULNAR ARTICULATION. ARTICU- 

 LATIO MANUS, ARTICULATIONS OF THE HAND: ARTICULATIONES RADIOCARPEA ET INTERCARPEA, 

 RADIOCARPAL ARTICULATION OR WRIST-JOINT AND TRANSVERSE CARPAL ARTICULATION. ARTICU- 

 LATIONES CARPOMETACARPEA, CARPOMETACARPAL ARTICULATIONS; ARTICULATIONES INTER- 

 METACARPE.E, INTERMETACARPAL ARTICULATIONS. ARTICULATIONES METACARPO-PHALANGE.E, 

 METACARPO-PHALANGEAL ARTICULATIONS ; ARTICULATIONES DIGITORUM MANUS, INTERPHALAN- 

 GEAL ARTICULATIONS OF THE FINGERS. (THE SKELETON OF THE RIGHT HAND WITH THE 

 DISTAL EXTREMITIES OF THE BONES OF THE FOREARM ; POSTERIOR OR DORSAL ASPECT.) 



The articulations are all opened by a section in the frontal plane : and whereas in the fingers this plane 

 passes through the joints from side to side, dividing the lateral ligaments ; in the thumb, owing to the 

 op losition of this member, the plane of section passes through the joints in a dorsopalmar direction, 

 and divides the dorsal and palmar ligaments. 



Articulationes manus et digitorum Articulations of the hand and fingers. 



