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Types of Bone Fractures PowerPoint Presentation

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On : Mar 14, 2014

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  • Slide 1 - ppt slide no 1 content not found
  • Slide 2 - Bone GrowthBone Fractures and Bone Diseases Lesson 2.4
  • Slide 3 - Compact Bone Formation Compact bone begins as cartilage, osteoblasts discharge a gelatin-like substance (osteoid) in which minerals are deposited giving strength Short bones have a single ossification site, while long bones have three
  • Slide 4 - Cancellous (spongy) Bone Formation Flat bones of skull Begin as fibrous membrane Osteoblasts release osteoid into membrane, which forms a sponge-like bundle of fibres
  • Slide 5 - Bone Remodelling Two phases (reabsorption and reformation): Osteoclasts remove old bone by releasing acids and enzymes Osteoblasts secrete gelatin-like substance (osteoid) and new tissue forms Most active during the early years of human life and declines until 35 y.o After 35, process is reversed; reabsorption exceeds reformation. 5-10% loss in bone mass per subsequent decade
  • Slide 6 - Epiphyseal Plates and Lines Also known as growth plates, occur at various locations at the epiphyses of long bones When growth is done, become epiphyseal lines
  • Slide 7 - Does weight training stunt bone growth? When done properly resistance training can actually facilitate growth Children should avoid maximum lifts
  • Slide 8 - Fractures Simple No separation of the bones Hairline fractures Compound Complete separation of bone; major blow Comminuted Shattering of bone
  • Slide 9 - Stress – Strain Force (N) Deformation (cm)
  • Slide 10 - Hairline Fractures
  • Slide 11 - Hairline Fractures
  • Slide 12 - Compound Fracture
  • Slide 13 - Closed Compound Fracture
  • Slide 14 - Open Compound Fractures
  • Slide 15 - Llewellyn Starks, who suffered a compound fracture to his right tibia and fibula when attempting a jump at the 1992 New York games. This injury ruined his career.
  • Slide 16 - Comminuted Fracture
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  • Slide 19 - Spiral Fracture
  • Slide 20 - Avulsion Fracture When a fragment of bone tears away from the main mass Force of muscle contraction pulls tendon and bone from periosteum Athletes
  • Slide 21 - Avulsion Fracture
  • Slide 22 - Impacted Fracture
  • Slide 23 - Stress Fractures Type of hairline fracture that occurs after repetative stress Muscles become too fatigued to absorb the shock Common in runners. Which bones?__________ Training too hard too soon
  • Slide 24 - KRITZ The Healing of Broken Bones
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  • Slide 29 - What Type of Fracture is This?Is it Open or Closed?
  • Slide 30 - Rickets Rickets is a disorder caused by a lack of vitamin D, calcium, or phosphate. It leads to softening and weakening of the bones. Symptoms: Bone pain or tenderness Arms; Legs; Pelvis; Spine. Dental deformities
  • Slide 31 - Osteoporosis “porous bone” Leads to fragile bone and increases risk of breaks – hip wrist and spine. Why these bones? Called silent disease Post-menopausal women more at risk Young women with “female triad” also at risk (excessive exercise, poor diet, and weight loss)
  • Slide 32 - Osteoporosis
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  • Slide 34 - Work in groups of two. Using the text and the internet, each group will research one of the following and present the findings to the class: Rickets How common is rickets? Worldwide? Canada What is the causal link between vitamin D and Rickets? People living in what geographic region are more at risk What is the treatment for rickets? Osteoporosis Why are women more at risk for osteoporosis? Can men get osteoporosis? When are they most at risk? What is the female triad and why are these young women at risk? What are some treatments for osteoporosis? What is the most current treatment? What are some possible future treatments?

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