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Created page with "*In horses *Often associated with angular limb deformity *Also called '''epiphysitis''' and '''physeal dysplasia''' *P..."
*In horses
*Often associated with [[Bones Developmental - Pathology#Angular limb deformity|angular limb deformity]]
*Also called '''epiphysitis''' and '''physeal dysplasia'''
*Problem of [[Bone & Cartilage Development - Anatomy & Physiology|endochondral ossification]]
*Two age groups
**Weanlings
**Yearlings in early training and two-year-olds
*May cause contracted tendons and flexural deformities
*Factors probably involved in its development:
**Genetically fast growth rate
**Large quantities of imbalanced, high energy feed
**Imbalanced weight-bearing on joints
**Excessive activity
**Growth spurts
*Histologically: (appearance similar to [[Bones Developmental - Pathology#Angular limb deformity|angular limb deformity]])
**Lateral aspect of radius
***Thickened metaphyseal part of physeal cartilage
***-> Delay or disturbance of endochondral ossification
***Compression
**Central part
***No obvious deformity
**Medial aspect
***Tension
***-> Transverse [[Bones Fractures - Pathology|fractures]] and repair
**Laxity of periarticular attachements in young foals allows [[Bones Developmental - Pathology#Angular limb deformity|angular limb deformity]]; not occuring in older foals and young horses
**(Sustained trauma produces similar lesions)
[[Category:Bones - Developmental Pathology]]
*Often associated with [[Bones Developmental - Pathology#Angular limb deformity|angular limb deformity]]
*Also called '''epiphysitis''' and '''physeal dysplasia'''
*Problem of [[Bone & Cartilage Development - Anatomy & Physiology|endochondral ossification]]
*Two age groups
**Weanlings
**Yearlings in early training and two-year-olds
*May cause contracted tendons and flexural deformities
*Factors probably involved in its development:
**Genetically fast growth rate
**Large quantities of imbalanced, high energy feed
**Imbalanced weight-bearing on joints
**Excessive activity
**Growth spurts
*Histologically: (appearance similar to [[Bones Developmental - Pathology#Angular limb deformity|angular limb deformity]])
**Lateral aspect of radius
***Thickened metaphyseal part of physeal cartilage
***-> Delay or disturbance of endochondral ossification
***Compression
**Central part
***No obvious deformity
**Medial aspect
***Tension
***-> Transverse [[Bones Fractures - Pathology|fractures]] and repair
**Laxity of periarticular attachements in young foals allows [[Bones Developmental - Pathology#Angular limb deformity|angular limb deformity]]; not occuring in older foals and young horses
**(Sustained trauma produces similar lesions)
[[Category:Bones - Developmental Pathology]]