1 / 9

Bones: Round 2

Bones: Round 2. Andrew Richards & Ryan Swenson. Peak Functional Levels. Quantity of bone increases through life until skeletal maturity – Age 20-30 Peak Bone Mass is reached at this point “Bone Bank” used for remainder of life Growth rates differ at different sites

balin
Download Presentation

Bones: Round 2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Bones: Round 2 Andrew Richards & Ryan Swenson

  2. Peak Functional Levels • Quantity of bone increases through life until skeletal maturity – Age 20-30 • Peak Bone Mass is reached at this point • “Bone Bank” used for remainder of life • Growth rates differ at different sites • Most rapid growth during adolescence • About 25% of PBM achieved during adolescent growth spurt

  3. Peak Functional Levels • Factors • Gender: • Men larger skeletons than women= larger “bank” • Women reach their peak sooner • Have lower BMD • Hereditary: • ¾ of skeletal characteristics • Environmental Factors • Strain placed on skeleton (Wolff’s Law) • Activities such as smoking can negatively impact

  4. Increasing/Decreasing Levels • Occurs during the process of bone remodeling along with natural growth • Resorption, reversal, and formation • Osteoclasts, osteoblasts, osteocytes, etc.

  5. Increasing/Decreasing Levels • Remodeling process based off Wolff’s Law • Julius Wolff: German anatomist and surgeon • States that bone in a healthy person will adapt to the loads to which it is placed • Heavy Loads=increased levels • Long Term Immobilized=decreased levels

  6. Dysfunctional Levels • As body ages bone levels decrease • Additionally, factors can increase the rate

  7. Dysfunctional Levels • Osteopenia: low bone mass • Occurs naturally to some degree with aging • Women lose roughly 8% per decade • Men lose roughly 3% per decade

  8. Dysfunctional Levels • Osteoporosis: Decreased bone strength compromising normal function, predisposing to an increased risk of fracture • Change in structure of trabecular bone • Relationship to common fracture sites • Spine, wrists, and hips

  9. References http://www.ncsf.org/pdf/ceu/establishing-peak-bone-mass.pdf http://www.ncbi.nlm.nih.gov/books/NBK45504/

More Related