Flaccidity

 
Definition:

Long pastern is a disorder encountered in newborn foals characterized by hyperextension in the fetlock joints. The associated risk of deformation is so great that one cannot afford to adopt a wait-and-see attitude.

Hyperextension can result in the following changes: 

1. Inflammation of the pastern’s suspensory apparatus

2. Dislodgement of the growth cartilage and a displaced lower section of the cannon bone

3. Applanation of the articular surface on the proximal sesamoid bone facing the cannon bone

4. Applanation of the pastern’s articular surface facing the cannon bone

5. Formation of marginal elevation and arthrophytes on the anterior edge of the fetlock joint

6. Formation of marginal elevation and divulsion on the extensor tendon’s point of insertion on the distal phalanx

The DALLMER Flaccidity Shoe was developed along the lines of the horseshoe for long pasterns (extended heels with welded flange). The protruding heels are designed to overhang the plumbline from the heels by about 1-2 cm. It is very important to exercise the foal on an even surface. At the beginning of therapy, the foal should not be allowed on the pasture or be treated with any pain relieving medication.