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Debunked Workstation Myths

Debunked Workstation Myths

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There are many commonly accepted guidelines for a safe and comfortable workstation that are actually myths. Some postures and furniture can actually harm you and lead to discomfort, if rigidly followed. These debunked workstation myths will help you to manage the health risks of your home or work office:

 

Debunked Workstation Myths

 

Myth #1: Sitting correctly at a desk will eliminate discomfort and reduce injuries.

Debunked Workstation MythsIn actuality, sitting with picture-perfect posture for long periods of time can actually lead to more discomfort, as it is extremely fatiguing. It can also lead to joint-pain and muscle strain because the torso is placing constant pressure on the lower disks in your back. Even in the ergonomically correct position, your arms and hands can still incur injuries. Any time you are sitting or standing in a static position, you increase the risk of prolonged physical conditions. To avoid any injuries at your workstation, try alternating between sitting and standing while working. Choose dynamic positions that will increase blood flow and alleviate stiff muscles. Also, include small rest breaks and stretch frequently to help avoid injuries.

 

Myth #2: Always sit upright, and never recline at the workstation.

4 out of 5 workers would prefer to recline their chair slightly when working. In fact, a reclined position creates much less fatigue than sitting upright. Being slightly reclined is also much easier to maintain and alleviates gravitational pressure on the lower disks in the back. However, be cautious to avoid slouching, which can cause injuries from a lack of sufficient back support.

 

Myth #3: Ergonomic chairs are one-size fits all.

A single chair size won’t fit every shape and size. Women are shaped differently than men, and their hips are generally wider. Men usually have longer legs and consequently will need a deeper seat. There are many different body types, and each one requires a different seating solution. In addition, different chairs are appropriate for different tasks. When selecting an ergonomic chair, consider the tasks you will be doing and your body size and shape.

 

Myth #4: Adjust the chair height according to the table height.

Unfortunately, this is not always the case. Although it may seem like a simple solution, this does not always result in a safe sitting position. Instead, keep your chair at the appropriately adjusted position for your body type. If your chair is too low, it can add extra pressure to your legs and back. If the chair is set too high, it can result in discomfort from your feet dangling. You can get a footrest to avoid this, but the best way to avoid injuries is to adjust the table height or the task at hand.

Many people don’t realize that these commonly believed workstation postures are in fact myths. By educating yourself with the above recommendations, you can avoid unnecessary workstation injuries and added discomfort.

Ergonomic Chair Setup

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Comfortable desk work begins with proper chair setup. Follow these helpful tips to ensure a proper ergonomic chair setup.

Chair Setup

  • Push your hips as far back as they can go in the chair.
  • Adjust the seat height so your feet are flat on the floor and your knees are equal to, or slightly lower than, your hips.
  • Sometimes the desk height forces you to have the chair higher than you what will allow you to touch the ground.  If your feet don’t reach the ground put a small box under your desk to rest your feet on.
  • The back of the chair should be at a 100°-110° reclined angle which should create an angle between your body and your thighs of 90° -100°.

    Step 1 Chair.

    From UCLA Ergonomics

  • Make sure your upper and lower back are supported. Use extra cushions at the small of your back if your chair does not have adequate support.
  • Adjust the armrests so that your shoulders are down and relaxed.
  • If your armrests prevent your shoulders from being in a relaxed position, remove them.
  • Keep your body straight with the head and neck upright and looking forward, not to the side. Do not hunch over or slouch.

OTHER TIPS

  • Don’t cross your legs while sitting. This can cut off circulation and/or lead to hip problems.
  • Make sure your chair seat has a soft, downward curved edge so that it does not dig into the back of your thighs. This can also cut off circulation.
  • When purchasing a chair the best feature is its ability to adjust each component separately.
  • If sitting is too painful, consider a standing workstation.

 

Next post “Ergonomic Keyboard and Mouse Setup”

Best Chiropractor in Mission Valley

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Congratulations to Dr. Rose, DC on being voted 2012 Best Chiropractor in Mission Valley by Mission Valley News.

Click Here for the entire release.

Mission Valley News offers community news and information on Mission Valley, Old Town, Linda Vista and surrounding areas.

Sciatic Nerve Glide

Piriformis Syndrome Part III- Treatment

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Piriformis Syndrome Treatment

The two main goals of treatment are 1) to relief irritation to the sciatic nerve and 2) address any functional problems that may be contributing.
If the sciatic nerve is inflamed the first step is to decrease aggravation from compression. Things to avoid are leg crossing, sitting on your wallet, and sitting on hard surfaces.  Things you should begin doing are applying ice to the piriformis, stretching of the piriformi, and taking oral anti-inflammatories (as directed).  Stretching every 2-3 hours (while awake) is a key to the success of non-operative treatment. Prolonged stretching of the piriformis muscle is accomplished in while lying on your back with the hip flexed and passively adducted/internally rotated (see picture).  Another exercise that can be helpful to decrease irritation between the piriformis and sciatic nerve is a nerve gliding exercise.  This exercise tensions the sciatic nerve and allows it to move relative to the piriformis. It is sometimes called nerve flossing to better describe how the nerve moves through other structures.  Two types of nerve gliding exercises are pictured below. (Pictures from http://www.dynamicchiropractic.com/mpacms/dc/article.php?id=53203)
 Sciatic Nerve GlideSciatic Nerve Tensioner
Manual therapy can be extremely helpful in releasing tension on the sciatic nerve and addressing functional deficits.  Soft tissue therapies, including myofascial release and Graston®, aimed at releasing tension and muscular adhesions within the piriformis can be beneficial.  Chiropractic spinal adjustments can help address functional contributions from the spine such as sacroiliac joint hypomobility and low back dysfunction.  Hyperpronation of the foot can be addressed through orthotics in the short term and foot strengthening in the long term.  Pronation is a normal foot motion however overpronation may lead to increased external rotation of the hip with walking putting tension on the piriformis and sciatic nerve.
Treatment may take several months of consistent work and it is important not to get discouraged. As long as there is no progression of neurological symptoms conservative treatment is the best option. Your symptoms should be monitored by a healthcare practitioner to ensure there is no progression.
-Dr. Kevin Rose, DC
Q Angle

Piriformis Syndrome Part II- Evaluation

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Clinical Diagnosis

Piriformis syndrome occurs most frequently between ages 40-60 and is more common in women than men.  Some reports suggest a 6:1 female-to-male ratio for piriformis syndrome; , possibly because of biomechanics associated with the wider quadriceps femoris muscle angle (ie, “Q angle”) in the pelvis of women. Reported incidence rates for piriformis syndrome among patients with low back pain vary widely, from 5% to 36%.

Q-Angle

The most common  symptom of patients with piriformis syndrome is increasing pain after sitting for longer than 15 to 20 minutes. Many patients complain of pain over the piriformis muscle (ie, in the buttocks), especially over the muscle’s attachments at the sacrum and medial greater trochanter. Symptoms, which may be of sudden or gradual onset, are usually associated with spasm of the piriformis muscle or compression of the sciatic nerve; these symptoms include radiating/shooting pain or tingling or numbness in the back of the thigh, leg, or foot.  These symptoms must be evaluated by a healthcare provider to differentiate the possible causes.  Patients may also complain of difficulty walking and of pain with internal rotation of the involved leg, such as occurs during cross-legged sitting or walking. X-rays or an MRI offer little help in directly diagnosing piriformis syndrome but may be used to rule out other causes of sciatica such as a herniated disc in the lumbar spine.

Functional Evaluation

There are many functional abnormalities that may have either caused or resulted from this condition.  Once the diagnosis has been made, these underlying, perpetuating biomechanical factors must be addressed.

Functional biomechanical deficits associated with piriformis syndrome may include the following:

  • Tight hip external rotators including pirifromis
  • Tight adductors (groin)
  • Hip abductor weakness
  • Lower lumbar spine dysfunction
  • Sacroiliac joint hypomobility
  • Hyperpronation of the foot and prolonged toe-off

Functional adaptations to these deficits include the following:

  • Ambulation with the thigh in external rotation
  • Functional limb length shortening
  • Shortened stride length

Next post will discuss treatment options for piriformis syndrome