Back mechanics. Back Injuries

Сентябрь 12, 2022

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Back mechanics. Back Injuries

Содержание

2. Back Injuries Statistics 25% of low back injuries account for 95% of costs of low back
3. Spinal Column
4. The spine is made up of 33 vertebrae. The upper 24 vertebrae are separated by a
5. Spinal Column
6. Discs and Force
7. Herniated Discs
8. Lower Spine
9. Spine Range of Motion
10. Spine Range of Motion
11. Spine Range of Motion
12. Back Mechanics
13. Danger Zones
14. Anatomy of Proper Lifting
15. Anatomy of Proper Lifting If you are out of physical shape can also result in increased
16. Balance of Forces
17. Balance of Forces Without Weight ? lb x 2 in = (65 lb x 9 in)
18. Balance of Forces With Weight ? lb x 2 in = (65 lb x 9 in)
19. Equivalent Forces
20. Relative Disk Pressure
22. Скачать презентацию

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Back Injuries Statistics
25% of low back injuries account for 95% of

costs of low back injuries
NIOSH- 70% of general public will have back pain in their lifetime
80% of back pain caused by inadequate exercise
Back injuries account for 25% of all WC claims and 33-44% of all WC costs

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Spinal Column

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The spine is made up of 33 vertebrae. The upper 24

vertebrae are separated by a jelly filled layered ligaments called disks. These disks act as shock absorbers for the spine.
The facet joints are the back part of the vertebrae that form the channel for the spine.
The lumbar region are the five large vertebra composing the lower back, allowing the back to bend forward and back.

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Spinal Column

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Discs and Force

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Herniated Discs

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Lower Spine

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Spine Range of Motion

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Spine Range of Motion

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Spine Range of Motion

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Back Mechanics

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Danger Zones

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Anatomy of Proper Lifting

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Anatomy of Proper Lifting
If you are out of physical shape can

also result in increased loads when we improperly lift.

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Balance of Forces

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Balance of Forces
Without Weight
? lb x 2 in = (65 lb

x 9 in) + (15 lb x 15 in) + (25 lb x 24 in)

? X 2 in = 1410 lbs

Force on Back = 705 lbs

Torso

Arms

Head

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Balance of Forces
With Weight
? lb x 2 in = (65 lb

x 9 in) + (15 lb x 15 in) + (25 lb x 24 in) +(20 lb x 36 in)

? X 2in = 2130 lbs

Force on Back = 1065 lbs

Torso

Arms

Head

Object

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Equivalent Forces

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Relative Disk Pressure