Introduction

• Corns are a common cause of lameness in sight hounds.

Pathogenesis

Etiology

• Mechanical although foreign body penetration may be implicated in some cases.

Predisposing factors

• Racing and breed.

Specific

• Concomitant foot abnormalities resulting in an abnormal weight bearing on the pad.

Pathophysiology

• Circular hyperkeratosis causing a thickened hard area in the weight bearing area of the pad .

Timecourse

• The lesion causes a progressive lameness that will not resolve naturally.

Epidemiology

• In racing animals it is mostly seen from 2 years of age. In retired or pet dogs it is usually seen from 5 years of age.

Diagnosis

Treatment

Outcomes