Question

What change occurs in the bone to make conformational abnormalities permanent? ( regarding foals)

Answer 1

Ans . The following changes in bone of Foals can make conformational abnormalities permanent :-

(i) Club foot :- It is a term that describes a hoof with a foot axis of 60 degrees or more. This condition can be acquired or congenital (present at birth). This condition occurs almost exclusively in the forelegs.If the clubfoot is congenital, it results from a congenital flexural deformity contracture of deep digital flexor tendon. An acquired clubfoot often is the result of an injury or condition that causes pain in leg , resulting in disuse.The leg than develops a flexural deformity from the disuse, and the hoof changes shape as a result. An acquired clubfoot also can be result of nutritional problems, leading to same flexural deformity.

(ii) Toed-in (Pigeon Toed) :- This flaw is recognized when viewing the horse from the front. One or both hooves will point inward. The deviation can begin at the shoulder or hip, or as low as the fetlock.This conformational abnormality- like many of the others is congenital in nature. Toed-in conformation leads to aberrations of the leg during flight ; the leg will travel in an outward arc (paddling) during movement.

(iii) Carpus valgus ( lateral deviation of the Carpus ; Knock knees) :- This is one of the angular limb deformities that occurs in foals. These congenital deformities are common. The carpal valgus occurs when one or both carpi(knees) deviate outward when viewed from front.