|
|
| Line 1: |
Line 1: |
| − | <big><center>[[Bones|'''BACK TO BONES''']]</center></big>
| + | DELETE THIS PAGE |
| − | | + | [[Category:Delete]] |
| − | | |
| − | | |
| − | | |
| − | ===Changes to normal structure===
| |
| − | | |
| − | **Damage to periosteum:
| |
| − | ***Invokes a hyperplastic reaction of the inner layer
| |
| − | ***Is painful
| |
| − | ***Exostoses can remodel or remain
| |
| − | **Lifting of periosteum causes new bone formation below
| |
| − | **Circumferential incision (e.g. during [[Bones - fractures|fracture]])
| |
| − | ***Longitudinal bone growth results
| |
| − | ***May be only on one side where periosteum is damaged
| |
| − | ****Used by surgeons to treat [[Bones - developmental#Angular limb deformity|angular limb deformities]]
| |
| − | | |
| − | ===Physis (Growth plate)===
| |
| − | | |
| − | *Site of many '''congenital''' or '''nutritional''' bone diseases in the growing animal
| |
| − | *'''Open''' in neonates and growing animals
| |
| − | **Chondrocyte proliferation balances cell maturation and death
| |
| − | *'''Closes and ossifies''' at maturity
| |
| − | **Regulated by androgens
| |
| − | *If growth teporarily stops -> layer of bone seals the growth plate -> moves into metaphysis when growth resumes -> forms '''Harris lines'''
| |