THE ARTICULATIONS IN GENERAL 



169 



The radius 



Radius 



The ulna 



Ulna 



The bones of the carpus (proximal row) 



Axis of the transverse 

 carpal articulation 



The bones of the carpus (distal row) 



Saddle joint (carpometacarpal , 



joint of the thumb) 



Articulatio sellaris (carpo- 



metacarpea pollicis) 



..-.-slntercarpal gliding joints 

 -'' Amphiarthroses intercarpeas 



Axis of flexion of the ftand 

 Axis of the wrist-joint 



Gliding joints 



Amphiarthroses 



FIG. 392. ARTICULATIO COMPOSITA, COMPOUND JOINTS (ARTICULATIONS OF THE HAND). 

 AMPHIARTHROSIS = ARTHRODIA OR GLIDING JOINT, AS SEEN IN THE INTERCARPAL, CARPO- 

 METACARPAL, AND INTERMETACARPAL JOINT. 



The arrows show the dorsal emergence of the axes of the wrist joint and of the transverse carpal 



' articulation respectively. 



The humerus 



Humerus 



Internal condyle 



Epicondylus medialis 



Internal lateral ligament / 

 of the elbow-joint / 



Lig. collaterale ulnare 



Axis of the trochoid articulation 

 or pivot-joint (radio-ulnar) 



Centre of the capitellum 

 of the humerus 



Axis of the trochlea of the humerus 

 (axis of flexion of the elbow -joint) 



Humeroradial articulation 



Articulatio humeroradialis 



Annular or orbicular ligament 

 Lig. annulare radii 



The ulna .. 



Ulna 



..-The radius 



Radius 



393- ARTICULATIO TROCHOIDEA, TROCHOID OR PIVOT JOINT. GINGLYMUS, HINGE JOINT. 



(PALMAR ASPECT OF THE ELBOW-JOINT.) 



The radial half of the capitellum of the humerus has been removed by a sagittal section passing 



through its centre of curvature. 



Diarthrosis. or Discontinuous Articulation. 

 Amphiarthrosis, arthrodia or gliding joint Articulatio composita, compound joint. 



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