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−<big><center>[[Bones|'''BACK TO BONES''']]</center></big>+ +===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]]
==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 - Pathology|fracture]])
−*Longitudinal bone growth results
−*May be only on one side where periosteum is damaged
−**Used by surgeons to treat [[Angular Limb Deformity|angular limb deformities]]
−===Physis (Growth plate)===
===Physis (Growth plate)===
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**Regulated by androgens
**Regulated by androgens
*If growth teporarily stops -> layer of bone seals the growth plate -> moves into metaphysis when growth resumes -> forms '''Harris lines'''
*If growth teporarily stops -> layer of bone seals the growth plate -> moves into metaphysis when growth resumes -> forms '''Harris lines'''
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+==Test yourself with the Bone and Cartilage Pathology Flashcards==
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+[[Bones_and_Cartilage_Flashcards_-_Pathology|Bones and Cartilage Flashcards]]
+
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+[[Category:Bones - Pathology|A]]