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OFFICE ERGONOMICS
Dr. Shrikant Sant
Asst. Professor
Community Physiotherapy Department
Dr. D. Y. Patil College of Physioth...
OFFICE ERGONOMICS
 UNC - Charlotte
 Safety and
Environmental
Health Department
 King Building – 1st
DEFINITION
 ERGONOMICS is a way of working
smarter--not harder by designing tools,
equipment, work stations and tasks tha...
MSD INJURY DATA
 600,000 MSDs require time off
from work.
 Women suffer more ergonomic
injuries due to:
 jobs requiring...
CAR COST IS (PARTIALLY)--A PAIN IN
THE BACK !!
 According to Dr. E.W. Simmons,
president of the American Back
Society, me...
CTD INJURY FACTORS
 CTD Injuries cause Lesions
to tendons of the neck,
back, shoulders, arms,
wrists or hands
 Primary c...
CTD RISK CONTROL: POSTURE
 NEUTRAL & COMFORTABLE:
 Wrists straight
 Shoulders relaxed with
elbows close to body
 head ...
ERGONOMIC ALIGNMENT
 Proper tool alignment illustrated – note
wrist and elbow positioning
CARPAL TUNNEL SYNDROME
 Up to 15% occurrence rate in certain industries.
 A natural occurrence with repetitive motion of...
CTD RISK CONTROL:
REPETITION
 Use automatic tools for repetitive tasks
(screw and bolt tightening)
 Eliminate unnecessar...
ERGONOMICS SUMMARY
 Good ergonomic design of tools, processes
and furniture can markedly improve
personnel comfort, healt...
Computer Ergonomics
 Routine PC user is defined as a person spending
20 hours or more per week working at a
computer.
 S...
ERGONOMIC KEYBOARDS
 Three types: Fixed split, Adjustable split &
“Sculptured”
 Awkward wrist postures minimized with 15...
WRIST RESTS
 No medical evidence that they reduce RSI injuries. They
work for some, but not for others
 Usage Guidelines...
Ergonomic chairs
 Adjustable back height
 Adjustable arm rests
 Adjustable Seat Pan Tilt
and Height to
accommodate user...
Alternative Pointing Devices
 Track-balls
 “Scrolling” Mouse
Other Ergonomic PC
Accessories
 Height-adjustable articulating keyboard tray – controls
height and tilt adjustments, allo...
Ergonomically Incorrect PC Station Design
Ergonomically Correct PC Station Design
Model Computer Workstation
 Keyboard trays WITH wrist
support.
 Split "Natural" keyboards to
facilitate neutral wrist an...
Questions ??... Contact S & EH
 Workplace ergonomic assessments will
be provided by Safety and
Environmental Health Dept ...
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Ergonomic presentation

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A short lecture on ergonomic principles and computer operator ergonomics and recent advances.

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Ergonomic presentation

  1. 1. OFFICE ERGONOMICS Dr. Shrikant Sant Asst. Professor Community Physiotherapy Department Dr. D. Y. Patil College of Physiotherapy, Pune.
  2. 2. OFFICE ERGONOMICS  UNC - Charlotte  Safety and Environmental Health Department  King Building – 1st
  3. 3. DEFINITION  ERGONOMICS is a way of working smarter--not harder by designing tools, equipment, work stations and tasks that allow a job to fit the worker and NOT by fitting the worker to the job:  Layout / type of controls & displays  Lighting & Temperature  Process (Heights, reaches, weights)
  4. 4. MSD INJURY DATA  600,000 MSDs require time off from work.  Women suffer more ergonomic injuries due to:  jobs requiring more heavy lifting, repetitive movement while completing tasks and awkward postures and as a result account for:  70% of Carpal Tunnel  62% of Tendonitis
  5. 5. CAR COST IS (PARTIALLY)--A PAIN IN THE BACK !!  According to Dr. E.W. Simmons, president of the American Back Society, medical costs related to back injuries can add up to $1,800 to the price of every car made in Detroit!
  6. 6. CTD INJURY FACTORS  CTD Injuries cause Lesions to tendons of the neck, back, shoulders, arms, wrists or hands  Primary causes:  Repetitive movements over long periods of time  Awkward postures  Use of excessive forces
  7. 7. CTD RISK CONTROL: POSTURE  NEUTRAL & COMFORTABLE:  Wrists straight  Shoulders relaxed with elbows close to body  head / shoulders & back in vertical alignment  Feet flat on floor  Frequent breaks when bent postures can’t be avoided
  8. 8. ERGONOMIC ALIGNMENT  Proper tool alignment illustrated – note wrist and elbow positioning
  9. 9. CARPAL TUNNEL SYNDROME  Up to 15% occurrence rate in certain industries.  A natural occurrence with repetitive motion of hands & wrists -- especially with high force levels and awkward wrist positioning.  Proper keyboard positioning and good wrist support can help most PC users avoid problems  GOOD NEWS: rates have dropped about 30% since 1990 -- which most attribute to strong workplace ergonomics programs
  10. 10. CTD RISK CONTROL: REPETITION  Use automatic tools for repetitive tasks (screw and bolt tightening)  Eliminate unnecessary tasks / movements by redesigning maintenance procedures and workstations  Take short, frequent breaks  Alternate tasks and processes to use different muscle groups
  11. 11. ERGONOMICS SUMMARY  Good ergonomic design of tools, processes and furniture can markedly improve personnel comfort, health, morale, and productivity.  Individual effort as part of a departmental workshop team is the greatest means of identifying / improving workplace ergonomic issues.  It’s critical to seek prompt medical aid for symptoms of ergonomic stress / CTDs.
  12. 12. Computer Ergonomics  Routine PC user is defined as a person spending 20 hours or more per week working at a computer.  Studies of PC users have not shown a risk of eye damage...although fatigue is quite possible during extended usage.  NIOSH studies have not indicated a radiation hazard nor pregnancy risk from PC usage.  Workers using bi/tri-focal glasses that use a PC may need special purpose glasses for computer work that keep eyes/head on level plane.
  13. 13. ERGONOMIC KEYBOARDS  Three types: Fixed split, Adjustable split & “Sculptured”  Awkward wrist postures minimized with 15 to 25 horizontal degree key split AND 8 to 66 degree vertical incline.  Key Layout Design Changes Have:  increased comfort (81% of users)  improved postures  reduced muscle activity  lowered carpal tunnel pressure in lab settings  Obtained primarily to alleviate an injury
  14. 14. WRIST RESTS  No medical evidence that they reduce RSI injuries. They work for some, but not for others  Usage Guidelines:  Buy rest that is even with top of keyboard  Material should be “medium-soft” (foam--gel mix) so foam doesn’t break down. AVOID hard plastic types  DON’T leave wrists on rest...which compresses carpal tunnel. Palm rest instead.  Changing typing habits more critical than wrist support  MOST APPROPRIATELY USED TO REST HANDS DURING PAUSE IN TYPING  LEARN TO TYPE CORRECTLY WITH “FLOATING WRISTS” FIRST!!!
  15. 15. Ergonomic chairs  Adjustable back height  Adjustable arm rests  Adjustable Seat Pan Tilt and Height to accommodate user body type  Note: Chair on left is NOT ergonomically designed – it is equipped with fixed arm rests and non- adjustable back and seat pan height
  16. 16. Alternative Pointing Devices  Track-balls  “Scrolling” Mouse
  17. 17. Other Ergonomic PC Accessories  Height-adjustable articulating keyboard tray – controls height and tilt adjustments, allows proper keyboard positioning for many different body types.  3M model AKT 100 shown above is a good example of a well made keyboard tray.
  18. 18. Ergonomically Incorrect PC Station Design
  19. 19. Ergonomically Correct PC Station Design
  20. 20. Model Computer Workstation  Keyboard trays WITH wrist support.  Split "Natural" keyboards to facilitate neutral wrist angle  Fully adjustable ergonomic chair  Document holder to minimize head / eye & neck movements  Corner desk units to position monitor directly in front of employee  Foot rest where requested.  Re-organization of working materials within employee arm reach.  Alternative pointing devices
  21. 21. Questions ??... Contact S & EH  Workplace ergonomic assessments will be provided by Safety and Environmental Health Dept upon request.  S, & EH phone extension – 4279  HAVE A SAFE AND HEALTHY DAY

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