San Diego Chiropractic Blog

The study of workstation ergonomics tells us that the objects that we use most often should be located closest to your body and accessed easily, without awkward body positions or movements. Repeated reaching or prolonged fixed postures that involve leaning forward from your chair are stressful and fatiguing.

Some people are aware of computer ergonomics and have purchased various ergonomic devices. These devices, such as keyboard trays, gel mouse pads, and ergonomic keyboards rarely provide solutions to the big picture of computer ergonomics. These items must work with each other in order to produce a significant reduction in postural stress. For example, an ergonomic mouse is of little use if it is positioned in an area that requires reaching and stretching in order to operate it. Limiting reaching and stretching for desk items is essential to maintaining a healthy ergonomic environment.

The most frequent complaint that I have seen in my office is due to computer work is the combination of mousing and reaching to the desk for the mouse.

Most computer stations are designed in a way that involves the worker operating the computer mouse on a pad on the desk. Reaching to the desk for the mouse places direct stress on the joints and soft tissues of the neck, shoulder, elbow, wrist and hand. Additionally, reaching forward for the mouse stresses the lower and middle back.

So How Does Reaching for the Mouse Set the Stage for Injury?

Reaching for the mouse causes you to lean forward in your chair, extend your arm and support the weight of your body through your extended arm.

The stresses placed on the human frame when reaching for the mouse are easily identified. Contrary to popular belief, sitting, which most people believe is relaxing, is hard on the back. Sitting for long periods of time can cause increased pressure on the discs of the spine.

In recent years, studies on postural stress have indicated that we should be sitting upright with our hips flexed at 90 degrees. As it turns out, the most up to date studies show that a slightly reclined sitting posture with the hips flexed at 100 to 115 degrees is ideal if you have to sit at a desk. If your mouse is not positioned close enough to your body, you will have to reach for it. Reaching for your mouse stresses your back by reducing the angle of your hips.

Next, we have to look at the effects of reaching on the neck and shoulder. When the mouse is being operated at a distance that makes the operator reach, the shoulder extends forward and the shoulder blade abducts (rotates forward). This position stretches the muscle groups that connect the medial portion of your shoulder blade to your spine and the superior portion of your shoulder blade to your neck. In the short term, this stretch aggravates the affected muscle groups causing spasm, fatigue, headaches and stiffness in the neck and shoulder. In the long term, this position creates a condition called a “stretch weakness” resulting in muscular imbalance, trigger points and chronic variations of the conditions listed in the prior sentence.

Lastly, placing the mouse too far away, too low, or too much on one side can cause shoulder, wrist, elbow, and forearm discomfort. When the operator is forced to reach for the mouse, his / her body weight shifts forward and ultimately results in weight bearing stress on the extended arm. Spending prolonged periods of time leaning on an extended arm is an unnatural and destructive posture that will eventually lead to the development of a repetitive stress syndrome; likely resulting disorders would include tendonitis of the wrist, elbow or shoulder.

Yours In Good Health

Dr. Jones

San Diego Chiropractic Care
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In addition to neck pain, back pain and headaches, my San Diego chiropractic office provides treatment for many patients with various types of repetitive stress injuries. This post will continue from where the last one left off and will describe what repetitive stress injuries are.

A Repetitive Stress Injury is a kind of catch all phrase for many conditions. Carpal Tunnel Syndrome, Tenosynovitis / DeQuervain’s Syndrome, Tendonitis, Thoracic Outlet Syndrome, Trigger Finger, Myofascial Pain Syndrome and Chronic Sprain / Strain are some of the actual diagnosis that are rendered in my office. All of these conditions are serious and in many cases can cause great pain, permanent disability and sometimes loss of employment.

Repetitive Stress Injuries occur from repetitive movements involving a specific set of muscles and joints. RSI injuries are the result of an accumulation of stress and strain that causes irritation, inflammation, and eventually pain or other disability. A good analogy used to characterize the onset of RSI would be the “straws on the camels back” saying.
Initially, RSI affects the soft tissues of the involved joint(s). Soft tissues include muscles, nerves, ligaments and tendons. However, if left untreated for long periods of time, the involved joint can become arthritic and form bone spurs resulting in permanent damage to the joint.

While various occupations ranging from meat cutters to construction workers develop RSIs that result from the typical duties of their professions, the most frequent cause of these injuries involve computer work. The constant muscular demands of keyboarding and mousing combined with the postural stress of confinement in an office chair with one’s neck and back held in prolonged fixed positions has resulted in an epidemic of injuries that includes hand pain, wrist pain, arm pain, neck pain, back pain and shoulder pain.

I hope that you are finding this information helpful. My next post will continue this series and will describe the basics of workstation ergonomic set-ups.

Yours In Good Health

Dr. Jones

San Diego Chiropractic Care
Chiropractor San Diego Blog
Pain Relief San Diego Chiropractor
Car Accident Whiplash Injuries Pain Relief
Back Pain Relief & Treatment
Work Injury & Workplace Safety Advice
Web Design Hillcrest - San Diego - California
Prenatal Health & Pain Relief

Workstation Considerations

The study of workstation ergonomics tells us that the objects that we use most often should be located closest to your body and accessed easily, without awkward body positions or movements. Repeated reaching or prolonged fixed postures that involve leaning forward from your chair are stressful and fatiguing.

Some people are aware of computer ergonomics and have purchased various ergonomic devices. These devices, such as keyboard trays, gel mouse pads, and ergonomic keyboards rarely provide solutions to the big picture of computer ergonomics. These items must work with each other in order to produce a significant reduction in postural stress. For example, an ergonomic mouse is of little use if it is positioned in an area that requires reaching and stretching in order to operate it. Limiting reaching and stretching for desk items is essential to maintaining a healthy ergonomic environment.

The most frequent complaint that I have seen in my office is due to computer work is the combination of mousing and reaching to the desk for the mouse.

Most computer stations are designed in a way that involves the worker operating the computer mouse on a pad on the desk. Reaching to the desk for the mouse places direct stress on the joints and soft tissues of the neck, shoulder, elbow, wrist and hand. Additionally, reaching forward for the mouse stresses the lower and middle back.

So How Does Reaching for the Mouse Set the Stage for Injury?

Reaching for the mouse causes you to lean forward in your chair, extend your arm and support the weight of your body through your extended arm.

The stresses placed on the human frame when reaching for the mouse are easily identified. Contrary to popular belief, sitting, which most people believe is relaxing, is hard on the back. Sitting for long periods of time can cause increased pressure on the discs of the spine.

In recent years, studies on postural stress have indicated that we should be sitting upright with our hips flexed at 90 degrees. As it turns out, the most up to date studies show that a slightly reclined sitting posture with the hips flexed at 100 to 115 degrees is ideal if you have to sit at a desk. If your mouse is not positioned close enough to your body, you will have to reach for it. Reaching for your mouse stresses your back by reducing the angle of your hips.

Next, we have to look at the effects of reaching on the neck and shoulder. When the mouse is being operated at a distance that makes the operator reach, the shoulder extends forward and the shoulder blade abducts (rotates forward). This position stretches the muscle groups that connect the medial portion of your shoulder blade to your spine and the superior portion of your shoulder blade to your neck. In the short term, this stretch aggravates the affected muscle groups causing spasm, fatigue, headaches and stiffness in the neck and shoulder. In the long term, this position creates a condition called a “stretch weakness” resulting in muscular imbalance, trigger points and chronic variations of the conditions listed in the prior sentence.

Lastly, placing the mouse too far away, too low, or too much on one side can cause shoulder, wrist, elbow, and forearm discomfort. When the operator is forced to reach for the mouse, his / her body weight shifts forward and ultimately results in weight bearing stress on the extended arm. Spending prolonged periods of time leaning on an extended arm is an unnatural and destructive posture that will eventually lead to the development of a repetitive stress syndrome; likely resulting disorders would include tendonitis of the wrist, elbow or shoulder.

Yours In Good Health

Dr. Jones

San Diego Chiropractic Care
Chiropractor San Diego Blog
Pain Relief San Diego Chiropractor
Car Accident Whiplash Injuries Pain Relief
Back Pain Relief & Treatment
Work Injury & Workplace Safety Advice
Web Design Hillcrest - San Diego - California
Prenatal Health & Pain Relief

In addition to neck pain, back pain and headaches, my San Diego chiropractic office provides treatment for many patients with various types of repetitive stress injuries. This post will continue from where the last one left off and will describe what repetitive stress injuries are.

A Repetitive Stress Injury is a kind of catch all phrase for many conditions. Carpal Tunnel Syndrome, Tenosynovitis / DeQuervain’s Syndrome, Tendonitis, Thoracic Outlet Syndrome, Trigger Finger, Myofascial Pain Syndrome and Chronic Sprain / Strain are some of the actual diagnosis that are rendered in my office. All of these conditions are serious and in many cases can cause great pain, permanent disability and sometimes loss of employment.

Repetitive Stress Injuries occur from repetitive movements involving a specific set of muscles and joints. RSI injuries are the result of an accumulation of stress and strain that causes irritation, inflammation, and eventually pain or other disability. A good analogy used to characterize the onset of RSI would be the “straws on the camels back” saying.
Initially, RSI affects the soft tissues of the involved joint(s). Soft tissues include muscles, nerves, ligaments and tendons. However, if left untreated for long periods of time, the involved joint can become arthritic and form bone spurs resulting in permanent damage to the joint.

While various occupations ranging from meat cutters to construction workers develop RSIs that result from the typical duties of their professions, the most frequent cause of these injuries involve computer work. The constant muscular demands of keyboarding and mousing combined with the postural stress of confinement in an office chair with one’s neck and back held in prolonged fixed positions has resulted in an epidemic of injuries that includes hand pain, wrist pain, arm pain, neck pain, back pain and shoulder pain.

I hope that you are finding this information helpful. My next post will continue this series and will describe the basics of workstation ergonomic set-ups.

Yours In Good Health

Dr. Jones

San Diego Chiropractic Care
Chiropractor San Diego Blog
Pain Relief San Diego Chiropractor
Car Accident Whiplash Injuries Pain Relief
Back Pain Relief & Treatment
Work Injury & Workplace Safety Advice
Web Design Hillcrest - San Diego - California
Prenatal Health & Pain Relief

Does computer work seem much more difficult (physically) than it should be?

The patients in my San Diego chiropractic practice often seem perplexed by the fact that they can be injured doing such sedentary work as computer work. Most are of the opinion that it takes a forceful and traumatic incident to result in injury.

Unfortunately, this is not the case. National statistics point to the computer as a major contributor to lost days at work due to injury. I see the same thing in my San Diego Chiropractic office. Neck pain, shoulder pain, wrist pain, hand pain and back pain are common among those who don’t have the proper ergonomic set-up of their computer stations. That being said, some people get these symptoms regardless of their ergonomic set-up and must evaluate many other contributing factors in order to relieve the stress.

Computer ergonomics is the study and / or implementation of workstation design with the purpose of reducing or eliminating physical stress.

My interest in repetitive stress syndromes began approximately 10 years ago when my practice started seeing a much greater number of people suffering from the effects of computer / keyboard work. Despite all of my training and continuing education related to these types of injuries, I quickly realized that traditional treatment for this type of injury was marginally successful at best.

Any type of therapy was going to have to include the application of basic ergonomic principals to the patient’s work environment.

I am of the opinion that treatment alone or application of ergonomic principals by themselves is not going to resolve a repetitive stress injury.

Over the next several weeks I will write a series of articles that will address the implication of workstation ergonomics and injury resulting from postural stress secondary to use of the computer mouse.

Specifically, the following will be addressed:

1) What repetitive stress injuries are

2) What role do work station ergonomics play in injury

3) How reaching for the mouse sets the stage for injury

4) What are the symptoms of repetitive stress injury

5) How you can avoid mouse reaching injuries

Yours In Good Health

More Coming Soon Here’s To Your Health Yours In Good Health
Dr. Jones

San Diego Chiropractic Care
Chiropractor San Diego Blog
Pain Relief San Diego Chiropractor
Car Accident Whiplash Injuries Pain Relief
Back Pain Relief & Treatment
Work Injury & Workplace Safety Advice
Web Design Hillcrest - San Diego - California
Prenatal Health & Pain Relief