Long Bone Anatomy

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Long Bone Anatomy
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Shaft Anatomy

• Diaphysis Shaft made of compact bone with a
  marrow cavity inside
• Periosteum a protective, vascular, fibrous
  connective tissue membrane around the diaphysis.
  
• Sharpeys fibers connect the periosteum to the
  bone

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Periosteum

• Periosteum

Marrow Medullary Cavity
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Ends of the Long Bone

• Epiphysis the ends of the bone, compact on the
  outside, spongy on the inside
• Articular Cartilage Slippery hyaline cartilage
  that reduces friction at joints.

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Femur Epiphyses
Compact Bone
Spongy Bone
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Epiphyseal Growth Plate

• A plate of hyaline cartilage that cause the bone
  to grow lengthwise.
• As you age, the growth plate stops and is
  replaced with bone (the epiphyseal line)

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Medullary (marrow) Cavity

• Infants Red Marrow that make red blood cells
  fill the cavity
• Adults Adipose tissue (fat) fills the cavity
• Red marrow is found in the cavities of the
  spongy bone in flat and long bones.

Marrow
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Bone Marrow Transplant

• While you are awake and pain-free (using local
  anesthesia), bone marrow is removed from the top
  of the hip bone (iliac crest). The bone marrow is
  filtered, treated, and transplanted immediately.
  Other times it's frozen and stored for later use.
  The bone marrow is then transfused through a vein
  (IV line). It naturally transports itself back
  into the intended bone cavities, where it grows
  quickly to replace the old bone marrow

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Bone marrow donor