156 



DISEASES OF THE BONES JV^'D AETICULATIGNS. 



gallop, where the animal is more kept up to the bridle, and 

 the weight thus thrown more directly upon the uppsr extremity 

 of the bone, and is thence transmitted to the seat of splint, in 

 the same way as a blow will cause an indirect fracture, as already 



explained. As a rule, the inner side 

 of the upper third of the metacaqials 

 is the seat of splint ; but, owing to 

 peculiarity of form and shape of the 

 leg, the deposit may be found upon the 

 outer side,' or both upoii the inner and 

 outer, and middle aspect of the limb. 

 Percivall describes five classes of splints : 

 1st. Simple. 



2d. Double or pegged splints ; that 

 is, those which are found upon both 

 aspects of the limb, with an osseous 

 communicating bar running from one 

 to the other. 



3d. Those close to the knee. 

 4:th. Consisting of two or more 

 exostoses upon one side of the leg, 

 one above the other, with perhaps an 

 osseous communication. 



5th. Little bony excrescences, in- 

 volving the knee-joint, namely, tho 

 head" of the metacarpus minor iiiter- 

 10. 22.— Compound splint, ^yg ^^^ trapezoid, or metacarpus 



,„.xylving the three metacarpal ' j -f 



bones. a.Inter-metacarpal groove, minor extsmUS, and UUCltorm. 

 presenting a smooth healthy sur- ^ simple Splint, Whsu not CaUSing 

 face, b, b. Osseous deposit, m- ... j 



volving. the extremities of the lameness, and in a position removed 



metacai^al and superior sesa- ^^^^ ^^^-^^^ articulation Of tendon, is 

 moideanlifjaments. c,c,c. Irregu- 

 lar ossifications, involving the not looked upou 83 au Unsoundness, 



small metacarpals, lower end of ^^ ^ ^^ ^^^^^ ^^^gj. ^ ^j^gg£_ 



large metacarpal, and formmg '-'"'' "■'^•- " " 



points of attachment to the supe- fied 83 causBs of Unsoundness, as they 



nor sesamoidean ligament above .^^ ^^^^^^ ^ ^^^^ ^^^^^ 



its bifurcation. «.!.« i.u «, j 



Note. -The more Important por- ucss.; aud are Indicative of ffiore 

 lLrernUMniTcn^a™^en"Lr:?rr^ diseasQ than is apparent either to the 

 S s:^ieT'"' '"°* """ •" ""* eye or touch of the examiner ; disease 

 involving articulating surfades, hsamentoua stmoture-s, or Inter- 

 feiinq v/ith the movement of a tendon. 



Fio, 



invol 



