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Replacing page with 'DELETE THIS PAGE Category:Delete'
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−<big><center>[[Bones|'''BACK TO BONES''']]</center></big>+ +
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−===Changes to normal structure===
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−**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]]
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−===Physis (Growth plate)===
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−*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'''
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