2Back Injury Facts70% of cases – Average weight of object lifted was # and 30% were over 100#The distance traveled at the time of injury was less than 5 feet50% of the cases, the object was lifted from the ground level83% of the cases, the back was fully or partially flexed or bent
3Back Injuries…They are exceedingly painful, difficult to heal, and have an affect on everything you do.After suffering one back injury, you are much more likely to experience another one later.The most costly type of injury for the State of Georgia.According to the Bureau of Labor Statistics, more than one million workers suffer back injuries each year; and back injuries account for one of every five workplace injuries.
4Injuries Sprain Strain Injury or tear of ligaments. Ligaments are tough connective tissue that connect bone to bone.StrainInjury to muscles that have been stretched or used too much.Both strains and sprains irritate the muscles around them.
5Causes of Back Injuries and Back Pain Repeated Lifting of MaterialsLifting Too Much WeightSudden Movements, Shift of LoadWhole Body VibrationsLifting & Twisting at the same timeBending over for long periods of time
6Our Backs The spine’s vertebrae are held together by ligaments. Muscles are attached to the vertebrae by bands of tissue called tendons (think of them as rubber bands).Between each vertebra is a cushion known as a disc (think of it as a pad or pillow).Spinal Column (think of the vertebrae as building blocks).
7Our BacksOpenings in each vertebra line up to form a long, hollow canal.The spinal cord runs through this canal from the base of the brain.Nerves from the spinal cord branch out and leave the spine through the spaces between the vertebra.
8Forces Involved in Lifting Think of your back as a lever. With the fulcrum in the center of the lever, how many pounds would it take to lift a 10 pound object?5 pounds 10 pounds 15 pounds
9Forces Involved in Lifting: You’re right!It takes 10 pounds of pressure to lift a 10 pound object.Will it take more or less force to lift the same 10 pound object with the fulcrum shifted to one side?
10Forces Involved in Lifting You’re right!With the fulcrum shifted away from the object, it takes more force to lift the object.The human back operates on a 10:1 ratio, with the waist acting as the fulcrum.
11Risky Moves! DANGER! My back is at risk! Anytime you find yourself doing one of these things, you should think:DANGER! My back is at risk!Heavy lifting...especially repetitivelifting over a long period of time.Twisting at the waist while lifting orholding a heavy load. (This frequentlyhappens when using a shovel).Reaching and lifting...over your head,across a table or out the back of a truck.
12Risky Moves! Common Lifting Errors Poor planningPoor communicationInsufficient strengthLifting with flexed spine and the legs straightUsing a fast, jerky movementBending and twisting at the same time
13Manual Handling Seek help: When a load is too bulky to properly grasp or lift.When you can’t see around or over the load.When you can’t safely handle the load.Attach handles to loads to reduce the chances of getting fingers smashed.Manual material handling is the principal source of compensable injuries in the American work force, and four out of five of these injuries will affect the lower back.Material handling tasks should be designed to minimize the weight, range of motion, and frequency of the activity.Work methods and stations should be designed to minimize the distance between the person and the object being handled.Repetitive or sustained twisting, stretching, or leaning to one side are undesirable. Corrections could include repositioning bins and moving employees closer to parts and conveyors.Store heavy objects at waist level.Provide lift-assist devices, and lift tables.When placing blocks under a load:- Ensure the load is not released until hands are removed from under the load.- Blocking materials should be large and strong enough to support the load safely.
14Safe Lifting Break load into parts. Get help with heavy or bulky items.Lift with legs, keep back straight, do not twist.Use handling aids such as steps, trestles, shoulder pads, handles, and wheels.Avoid lifting above shoulder level.Reference – OSHA Technical Manual - Back Disorders and Injuries
15Contributing Factors Poor posture… …is another contributing factor. When yourmother told you to sit and stand up straight,she was giving you good advice. It is best totry to maintain the back in its natural "S"shaped curve. You want to avoid leaningforward (unsupported) when you sit,or hunching over while you're standing.
16Contributing Factors Poor Physical Condition Your stomach muscles provide a lot of the support needed by your back. If you have weak, flabby stomach muscles, your back may not get all the support it needs, especially when you're lifting or carrying heavy objects. Good physical condition, in general, is important for preventing strains, sprains, and other injuries.
17Contributing Factors Extra weight… can be a big problem. Remember the fulcrum/lever principle? The more you weigh, the more stress it puts on your back every time you bend over--on a 10:1 ratio. That pot belly is not helping the health of your back.
18Injury Prevention Analysis Tools The closer to the body the more strength you have.Other tools:ACGIH Lifting TLVNIOSH Lifting EquationMost models show approximately 35 pounds to be the maximum load for repeated lifting.
19Injury PreventionUse carts and dollies to move objects, instead of carrying themyourself. (Remember that it is better on your back to push cartsthan it is to pull them).Use cranes, hoists, lift tables, and other lift-assist deviceswhenever you can.
20Injury Prevention Avoid lifting and bending whenever you can. Place objects off the floor; that way you won’t have to reach down to pick them up again.Raise/lower shelves.
21Injury Prevention - When lifting a box, think out of the box! Is there a better way?Don’t wait for someone to get injured beforechanging a job.Just because we have done it this way in the past, do we have to continue using the same method to handle a loading and unloading task?
22Injury Prevention Reducing frequent lifts: Use mechanical assistanceAvoid unnecessary liftingUse mobile storage shelvesList of principles to reduce frequent lifting (reducing duration of lifting will also be discussed later)
23Think of your body as more of an elevator than a crane. Proper LiftingYou can't always avoid lifting, but there are ways to reduce the amount of pressure placed on the back when you do so.By bending the knees, you keep your spine in a better alignment, and you essentially take away the lever principle forces.Instead of using your back like a crane, allow your legs to do the work.Think of your body as more of an elevator than a crane.
24Proper Lifting BEFORE YOU LIFT Plan Your Route: Path clear? Trip hazards removed? Dry?Assess the Load: Too heavy? Can I use a hand truck or forklift? Can I slide it?WHEN YOU LIFTLift It Right: Position your body close to the object. Keep your back straight.Lower It Right: When you put the load down, bend your knees not your waist.GET HELP IF YOU NEED ITWork Together: Don't be a hero. Communicate with your partner!
25Proper Lifting Procedures Lifting Options – Golfers Lift Only appropriate for light objects that can be lifted with one handGood lift for those with painful kneesBend at hip with while raising one leg behind youLeg lift helps maintain a neutral spinePlace one hand on thigh or fixed objectPush hand off thigh or object while lowering leg to complete lift
26Take frequent, short (micro) breaks (seconds not minutes). Prevent Back InjuriesBody ManagementRest your backTake frequent, short (micro) breaks (seconds not minutes).Stretch. If you've ever been working in an awkward position for a long time, then stood up and felt stiff and sore, you know you've been in that position too long, and your body is now protesting.Taking a one minute stretch break every now and then can help you avoid that.
27Conclusion Point Take-A-Way Basic anatomy of the back Blocks, rubber bands, pillowsForces involved with lifting1:10 ratio,Keep load close to bodyRisky moves associated with liftingNo twisting with loadsNo reachingContributing factors to materials handling injuriesFitness, age, walking surfacesInjury preventionReduce your lifts, THINK!Mechanical helpProper lifting proceduresElevator vs. CraneUse proper lift for loadBody ManagementStretch, Exercise, Rest as needed