SUBCORONARY CELLULITIS. 1063 



coronet ; fever is a constant symptom, though in some cases it may 

 even precede this condition. 



The inflammation scarcely ever affects the plantar cushion, though it 

 may attack the connective tissue above the coronet, producing necrosis 

 at this point, and leading to chronic suppuration and sinus formation. 



The prognosis is generally unfavourable, so that it is only advisable 



Fig. 565. — Lateral view of fore foot, with nerves and injected vessels, showing some of 

 the structures involved in inflammation of the subcoronary connective tissue and its 

 complications, a, Digital artery ; b, perpendicular artery ; e', preplantar artery ; 

 /', twigs from the plantar artery which escape through the foramina, just above the 

 lower margin of the os pedis, and by their anastomosis form /", the circumflex artery 

 of the toe ; A, digital vein ; B, coronary venous plexus ; C, laminal plexus ; G, 

 circumflex vein ; 1, digital nerve ; 2, anterior terminal branches of digital nerve ; 

 3, posterior terminal branches of digital nerve ; 4, cutaneous branches. 



to treat animals of considerable value. On the other hand, recovery 

 is Qot impossible, even when pain is severe, for sudden improvement 

 sometimes occurs when the abscesses break. 



Treatment. To prevent complications, all injuries of the coronet 

 and its neighbourhood in which the skin is perforated, should if possible 

 be treated antiseptically. Surface injuries are rarely dangerous. 

 Treads on the coronet, especially when near the hoof, require particular 

 care to avoid purulent inflammation. 



