52 



ANATOMY FOR NUKSES. 



[CHAP. V. 



and some firm prominence beneath it. The large bursa situ- 

 ated over the patella is a well-known example of this class, 

 but similar, though smaller, bursse are found also over the ole- 

 cranon, the malleoli, the knuckles, and other prominent parts. 



SYNARTHROSIS, 



OR 

 IMMOVABLE JOINT. 



AMPHIARTHROSIS, 



OR 

 SLIGHTLY MOVABLE 



J )INT. 



DlARTHROSIS, 

 OR 



MOVABLE JOINT. 



TABLE OF CHIEF JOINTS. 



Sutura. Articulations by processes and indentations 

 interlocked together. A thin layer of fibrous tis- 

 sue is interposed between the bones. Sutures may 

 be dentated, tooth-like ; serrated, saw-like ; squa- 

 mous, scale-like ; harmonic, smooth ; and grooved, 

 for the reception of thin plates of bone. 



1. Symphysis. The bones are united by a plate or 

 disk of fibro-cartilage of considerable thickness. 



2. Syndosmosis. The bony surfaces are united by 

 an interosseous ligament, as in the lower tibio- 

 fibular articulation. 



1. Arthrodia. Gliding joint; articulates by plane 

 surfaces which glide upon each other. 



2. Ginglymus. Hinge or angular joint ; moves back- 

 wards and forwards in one plane. 



3. Enarthrosis. Ball and socket joint ; articulates 

 by a globular head in a cup-like cavity. 



4. Pivot. Articulates by a pivot process turning 

 within a ring, or by a ring turning round a pivot. 



5. Condyloid. Ovoid head received into elliptical 

 cavity. 



6. Reciprocal Reception. Saddle joint ; articular sur- 

 faces are concavo-convex. 



