| Line 61: |
Line 61: |
| | | | |
| | | | |
| − | ===Physitis=== | + | ===[[Physitis]]=== |
| − | | |
| − | *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]]
| |
| − | | |
| − | | |
| − | | |
| | | | |
| | ==Test yourself with the Bone and Cartilage Pathology Flashcards== | | ==Test yourself with the Bone and Cartilage Pathology Flashcards== |