Changes

**[[Bones - normal#Periosteum and blood supply|Periosteum]] tears, fragments displaced

**[[Bones - normal#Periosteum and blood supply|Periosteum]] tears, fragments displaced

*-> Haematoma formation, necrosis of any isolated fragments

*-> Haematoma formation, necrosis of any isolated fragments

*-> Mesenchymal cells proliferate in haematoma - [[General Pathology - Chronic Inflammation#Granulation tissue|granulation tissue]]  

*-> Mesenchymal cells proliferate in haematoma - [[Chronic Inflammation - Pathology#Granulation tissue|granulation tissue]]  

**Invading cells: endothelial, fibroblasts, osteoprogenitor

**Invading cells: endothelial, fibroblasts, osteoprogenitor

*-> Loose collagenous tissue (primary callus)

*-> Loose collagenous tissue (primary callus)

<big>Also see [[General Pathology - Healing and Repair#Repair in the Bones|'''General Pathology - Repair in the Bones''']]</big>

<big>Also see [[Healing and Repair - Pathology#Repair in the Bones|'''Repair in the Bones - Pathology''']]</big>