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12 year-old boy that is lactose intolerant. Broken elbow and protruding…

- - - - Medullary Cavity
        
        Yellow Marrow
        
        stored fats, can be used as energy source
        
        mesenchymal stem cells
      - walls are composed of compact bone
    - - Filled with spongy bone
        
        red marrow fills space
        
        hematopietic
    - - layer of hyaline cartilage
        
        matured cartilage is replaced with osseus tissue
        
        epiphyseal plate is now epiphyseal line
  - - - secrete osteiods
        
        made up of collagen
        
        collagen makes up 90% of bone protein
        
        made up of calcium binding proteins
    - - respond to stimuli
      - communicates with osteoblasts and osteoclasts for remolding
    - - mitotically active stem cells
        
        periosteum
        
        endosteum
    - - breakdown of bone
  - - - increases risk
        
        Heart disease
        
        Kidney stones
  - - - inflammatory phase
        
        Hematoma formation
        
        acts as a future template for callus formation
        
        clot formation
        
        tissue granulation
        
        cell recruitment
      - cartilaginous Callus formation
        
        mesenchymal progenitor cells are recruited
      - bone Callus Formation
        
        calcification of fracture callus
      - Remodeling Phase
        
        last faze of healing repair
      - Immune cells and fracture healing
      - Immune cell function and Origin
      - platelets
        
        non- nucleated cells
        
        primary function is clotting
    - - Osteocytes
        
        Regulate mineral homeostasis
      - Osteoclasts
        
        Dissolve mineral in bone
      - osteoblasts
        
        Make new bone
  - - - fracture in 3 or more places
    - - ragged break occurs while twisting
    - - broken bone that is pressed inward
    - - bone is crushed
    - - epiphysis separates from diaphysis
    - - bone breaks incompletely
  - - - hyaline cartilage plate
        
        metaphysis at each end of long bone
    - - respinsible for longitudinal growth of bone