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Ergonomics

Ergonomics. Definition. The science of matching jobs, systems, products and environments to the capabilities and limitations of the worker. - textbook The study of designing equipment and devices that fit the human body, its movements, and its cognitive abilities - wikipedia. Ergonomics.

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Ergonomics

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  1. Ergonomics

  2. Definition • The science of matching jobs, systems, products and environments to the capabilities and limitations of the worker. - textbook • The study of designing equipment and devices that fit the human body, its movements, and its cognitive abilities - wikipedia

  3. Ergonomics • Ergonomic Designs ideally allow the joints to be in a NEUTRAL POSITION in which ligaments or tendons are not pulling on bones or other muscles, when the object is being handled.

  4. Soft Tissue Injuries • An injury of the muscles, tendons, ligaments, joints, nerves, blood vessels, or related structures – textbook • Refers to muscles, tendons, ligaments and skin but not bones or internal organs

  5. Examples of Soft Tissues Injuries • Strains (pulled muscle) • Sprains (overstretched ligament) • Tendonitis (inflammation of tendon) • Tennis Elbow • Carpal Tunnel Syndrome

  6. Terms • Ligaments attach bone to bone • Tendons attach muscle to bone • Muscles contract, moving bones they are attached to by ligaments. Other bones may also move if they are attached by tendons.

  7. Hamstring Tear

  8. Sprains (overstretched ligament)

  9. Tennis Elbow

  10. Elbow Injuries

  11. Torn Knee Ligaments

  12. Carpal Tunnel Syndrome

  13. Causes • Repetitive movements • Sudden forceful movements • Constant or awkward posture • Strain from use of improper leverage when lifting • Not properly warming up or cooling down before strenuous activity

  14. Signs of Soft Tissue Injury • Numbness • Tingling or Burning sensations • Pain/Tenderness • Swelling • Redness • Restricted movement Loss of strength

  15. Poor Positioning Causes Strain on Tendons and Ligaments

  16. Carrying Loads Improperly can cause Shoulder Injuries

  17. Improper Lifting can cause Injury

  18. Proper Lifting Technique

  19. Neutral Postures • When joints are at under minimal strain and at their strongest point • When joints move away from the neutral posture, strain on tendons, muscles etc. increases and strength decreases. • Neutral postures reduce strain and keep joints in a “safe zone” where they can avoid injury.

  20. Proper Typing Posture

  21. Healing Phases • Reaction or Inflammatory Phase – marked by pain, swelling, redness, and increased temperature. Can last approx 72 hours. • Formation of Scar Tissue or Collagen – lasts 48 hours to six weeks • Replication – Replacement of damaged tissue can take from 6 weeks to a year

  22. Physio is Important for Proper Healing

  23. Complications From Improper Healing

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