Chapter 4 - RSI

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R S I



How many of you heard

about

R S I ?



Why you should be aware of

R S I ?



R e p e t i t i v e

I n j u r i e s



C o m p u t e r U s e r s a r e

P r o n e t o d e v e l o p

R S I



You are a computer athlete A dangerous occupation:

Walk several miles on your fingertips?



O t h e r N a m e s for R S I

Work Related Upper Limb Disorder (WHO)

Occupational Overused Syndrome (NZ)

Cumulative Trauma Disorder (USA)

Computer Related Injury (CRI)



Myth #1

“I don’t type a lot, so I can’t get RSI.”

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Myth #1

“I don’t type a lot, so I can’t get RSI.” Fact: Anyone who types more than two hours a day is

at risk for RSI

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Myth #2

RSI is mostly psychosomatic

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Myth #2

RSI is mostly psychosomatic Fact: Though usually invisible, RSI is a soft tissue

injury susceptible to medical diagnosis and treatment

Harris RSI -- LISA '99 11



Myth #3

“I don’t touch type, so I can’t get RSI.”

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Myth #3

“I don’t touch type, so I can’t get RSI.” Fact: though hunt-and-peckers are less likely to

develop RSI, certain habits (such as holding up the

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serious ailments



Myth #4

“My symptoms have been like this for years, so I guessit won’t get any worse.”

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Myth #4

“My symptoms have been like this for years, so I guessit won’t get any worse.”

Fact: RSI is progressive, and even if the pain doesn’t get

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,gets bad enough



Myth #5

“If my hands get really bad, I can always switch to voicedictation until it gets better.”

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Myth #5

“If my hands get really bad, I can always switch to voicedictation until it gets better.”

Fact: Current voice dictation systems are a poor

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, workers



R S I F a c t s & F i g u r e s

OSHA estimate over 700,000 RSI’s occur every year

15-25% of computer users throughout the world may-

3 out of 5 office workers in Sweden have symptoms of R S I

Every day 6 people in UK leave their jobs due to an R S I

(Source - TUC)

75% of Indian Computer Users report pain/numbness. 55% ofIndian Computer Users got injured within a year of starting their

first job



The cost of RSI

$20 billion per year[Information Week, Nov. 9, 1992]

$29,000 average compensation

accounts or 0 o a o -re ate n ur es[Department of Labor]

Approx. ¾ of all jobs require using a computer



Despite its increasing prevalence, RSI ispoorly understood by workers, employers by workers, employers and the medicalprofession.



What is RSI? Repetitive Strain Injury (RSI)

is pain or nerve problems in upper extremity (hands, arms, orshoulders)

can also include neck and back is a soft tissue disease (muscles and nerves)

is an overuse syndrome Symptoms:

burning, numbness, tingling, pins-and-needles dull aching OR specific, intense pain

Controversial: many deny it exists sufferers receive little support from employers



W h y & H o w

?



Repetition of job tasks

Too much Stress

Muscles Tendons Nerves Other soft Tissues

O n

Causes

Leads to

R S I Awkward/Static

Postures



Bad posture

ulnar deviation dorsiflexion

pronat on

slouching



When do When do RSI’s Appear?

Starting a new job Using new office equipment

Return to work

After Extended Vacation After an Injury

Maternity Leave



T y p e s&

C a u s e sof

R S I



C a r p a l T u n n e lS y n d r o m e



C a u s e s..



B a c k P r o b l e m s



C a u s e s..

►► Poor Poor StrengthStrength

►► oor oor os uresos ures

►► Poor Poor Body MechanicsBody Mechanics



T h o r a c i c O u t l e t S y n d r o m e



C a u s e s..

Cradling Telephone

Awkward postures



T e n d i n i t i s &

T e n o s y n o v i t i s



C a u s e s..



Poor Ali nment



N e c k Strain&

Tension H e a d a c h e s



C a u s e s..



R o o t C a u s e s of R S I

Poor body mechanics

oor or a s

Inappropriate Workstation Setup



S y m p t o m s of R S I

Pain & Discomfort

Unusual sensations like Tingling, Burning,

an um ness.

Decreased ROM / Flexibility

Muscle weakness, loss of grip strength



W h a t n o t t o D o Ignore or deny you have a problem

Take pain killers

Cures the symptoms not the problem

Join a gym or start weight training

Undergo vigorous oil massages

Take a vacation hoping the pain will go away with rest



Ergonomics

Myotherapy

Physiotherapy

Acupuncture



Prevention

than Cure



How can you Prevent

R S I ?



Proper Workstation Setup

Postural Training

Good Work habits



Workstation



NECK



Wouldn’t this be nice!



POSTURE The Golden Rule..

PUT LIMBS IN A NEUTRAL POSTURE



P o s t u r a l T r a i n i n g

Neck Posture

Sitting Posture

Typing Posture

Use of Mouse

ea



W o r k H a b i t s

Take rest breaks

Practice good body mechanics

Exercise at work – Stretch !



S t r e t c h e s



Strengthening Exercises



R S I

may be worse than you think

r e v e n

it before it causes permanent

D a m a g e

Chapter 4 - RSI

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