Changes

==Changes to normal structure==

|backcolour =CDE472

|linkpage =Musculoskeletal System - Anatomy & Physiology

|linktext =Musculoskeletal System

|maplink = Musculoskeletal System (Content Map) - Anatomy & Physiology

===Changes to normal structure===

===Damage to Periosteum===

Lifting of periosteum causes new bone formation below

 

Circumferential incision (e.g. during [[Bones Fractures - Pathology|fracture]])

*Longitudinal bone growth results

**Lifting of periosteum causes new bone formation below

*May be only on one side where periosteum is damaged

**Circumferential incision (e.g. during [[Bones - fractures|fracture]])

**Used by surgeons to treat [[Angular Limb Deformity|angular limb deformities]]

***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)===

===Physis (Growth plate)===

**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'''