424 



PRACTICAL ANATOMY. 



TABLE OF THE VARIOUS CLASSES OF JOINTS. (Continued.') 



Class. 

 III. Diarthrosis 



(a) Enarthrosis . . . 

 (b} Condylarthrosis . 



(c) Ginglymus or Trochlearthrosis . 



(d) Trochoides or Lateral Ginglymus 



(<?) Arthrodia : 



(i) Simple 



(2) Saddle-shaped 



Examples. 



Shoulder. Hip. Astragalo-scaphoid. 



Temporo-mandibular. Occipito-atlantal. 

 Radio-carpal. Metacarpo - phalangeal. 

 Metatarso-phalangeal. 



Elbow. Ankle. Knee. Interphalangeal of 

 fingers and toes. 



Atlanto-odontoid. Superior Radio-ulnar. In- 

 ferior Radio-ulnar. 



Lateral atlanto-axoidean. The joints between 

 the articular processes of the vertebras, costo- 

 transverse, and interchondral. Acromio- 

 clavicular. Carpal. Carpo-metacarpal of 

 four fingers. Intermetacarpal. Tar sal. 

 Tarso-metatarsal. Intermetatarsal. Cal- 

 caneo-astragaloid. Superior and inferior 

 tibio-fibular. 



Sterno-costo-clavicular. Carpo-metacarpal of 

 thumb. Calcaneo-cuboid. 



The following is a list of the principal articulations of the immovable class 

 synarthrosis. Let the student locate these joints on the skull : 



The following are the members of the group of amphiarthrosis articulations. 

 Their number is small. Remember, the opposed bony surfaces are united by 

 discs of cartilage; there is slight movement, clue principally to the elastic nature 

 of the discs of cartilage. A partial synovial membrane may be developed during 

 pivgnancy : 



1. The intervertebral or intercentral articulations. 



2. The sacro-iliac synchrondrosis. 



3. The sacro-coccygeal articulation. 



4. The intercoccygeal articulations. 



5. The interpubic articulation symphysis pubis. 



