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Bone Remodeling Journey: An Educational Animation Series

Explore the intricate process of bone remodeling through a series of animations, starting with the formation of a Bone Metabolic Unit. Witness the crack, origination, resorption, and formation stages in detail, showcasing normal turnover and changes at menopause. Learn about the effects of treatments like raloxifene, bisphosphonate, and PTH on bone health. Follow along the journey as bone structures transform and adapt over time.

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Bone Remodeling Journey: An Educational Animation Series

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  1. Bone remodeling animations This is a series. The first slide will be a still shot of the first frame, and the next will be the rest of the animation. Susan Ott, 2009

  2. One Bone Metabolic Unit The usual stain for looking at bone sections results in green for mineralized bone and red-orange for osteoid. Here there will be a crack in the bone, following by “origination” of the BMU, and then resorption and then formation. After the bone has refilled the cavity, mineralization continues to increase, represented by the darker shades of green.

  3. One Bone Metabolic Unit

  4. Bone remodeling showing multiple BMU’s This is about 1.5mm of cancellous bone showing normal turnover. Remember that some BMU’s are going in and out of the plane of the section.

  5. Bone remodeling showing multiple BMU’s

  6. Bone remodeling at menopause The resorption lasts a little longer and formation is also increased. Watch for perforations and micro-fractures.

  7. Bone remodeling at menopause

  8. Bone remodeling with raloxifene treatment After 6 months, the medicine is given (stars). The effect is subtle but notice the LACK of perforations.

  9. Bone remodeling with raloxifene treatment

  10. Bone remodeling with bisphosphonate treatment After 6 months, the medicine is given (blue dots). They deposit in the bone and inhibit resorption.

  11. Bone remodeling with bisphosphonate treatment

  12. Bone remodeling with PTH treatment After 6 months, the medicine is given (chain of amino acids). The duration is short because that is when the study ended.

  13. Bone remodeling with PTH treatment

  14. There is a striking effect at the endosteal surface. Cortical bone remodeling with PTH treatment

  15. Cortical bone remodeling with PTH treatment

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