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EXTRACTS FROM EXCHANGES. 
laxed ; the lower extremity of the hind legs was much swollen. 
The animal was destroyed and at the post-mortem the follow¬ 
ing series of serious lesions was discovered : the perforans ten¬ 
dons of the four extremities were torn from their plantar inser¬ 
tions ; on the hind legs there was a complete breaking up at the 
semilunar crests, the small sesamoid, at the os coronae. On the 
anterior, the lesions were principally marked at the plantar 
aponeurosis. 3. Partial Dismsertioji of the Plantar Aponeurosis 
on a Hind Leg. —Heavy draught horse, 10 years old, which, 
after a violent effort to start a heavy load, could no more rest his 
foot on the ground. The fo^t rested on the toe, there was a 
great deal of soreness on pressure of the frog, also when the foot ^ 
was rotated from outwards inwards. Diagnosis was not made. 
After ten days of treatment of local continued irrigation, the 
animal, not improved, was destroyed. Lesions : large bloody ex¬ 
travasation in the sesamoid sheath ; partial disinsertion bilateral 
of the plantar aponeurosis Avith breaking np of small bony pieces. 
4. Suspected Dismsertion of the Sitspensory Ligaments on Both 
Hind Legs. —Racing mare, four years old, convalescing from an 
acute lobar pneumonia; after a walk of four hundred yards be¬ 
came lame on both hind legs. Standing was painful and diffi¬ 
cult ; both hind fetlocks rested on the ground, the phalanges 
bent downwards and backwards. There was much infiltration 
at the fetlock and in the region of the tendon ; both ends of the 
suspensory ligament were relaxed and swollen. As the ani¬ 
mal was not destroyed, the diagnosis could not be confirmed, 
but to all appearance was correct. * * * * From 
these observations, it is shown that the disinsertio 7 i may be 
co7nplete or incomplete; with separation of the parts or simple 
elongation ; or again partial or total. Disinsertion has for occa¬ 
sioning cause : excessive functional action either in its inten¬ 
sity, its rapidity or its duration. 5. Complete plantar disinser- 
tions are characterized by: i. Marked extension of the articula¬ 
tion, corresponding to the injured tendon or ligament; 2. By a 
relaxation of the separated ligamentous organ ; 3. By a swelling, 
first oedematons, later inflammatory ; 4. By sudden pain, spon¬ 
taneously manifested or brought on by pressure, traction or rota¬ 
tion. Incomplete or partial disinsertions are difffcnlt to recog¬ 
nize when the surfaces remain in contact. Localized to the 
plantar aponeurosis, they may give rise to similar symptoms to 
those of podotrochilitis, for which they may be mistaken.— 
{Annales de Med. Vet.) 
