Repetitive Motion Injuries

In construction, continuous strain- producing motions can result in wear-and-tear injuries to hands, wrists, and elbows. CTD (continuous trauma disorder), covers a broad range of musculoskeletal illnesses, which include carpal- tunnel syndrome and tendonitis.

Some Facts

• CTDs now account for 52% of all workplace illnesses.

• Carpal tunnel syndrome results from nerve damage inside the wrist, and is frequently caused by compression, repetition, and awkward postures from certain hand/wrist positions.

• Tendonitis is an inflammation of the tendons. Tingling and numbness can result from nerve impingement and entrapment.

• Early treatment of symptoms is important in reducing the severity, lost time, and associated disability of repetitive motion injuries.

• Vibration from power tools may result in white finger nerve & tissue damage.

It Really Happens

A 33 year old bricklayer from San Francisco began feeling numbness in his right hand. Because early treatment of symptoms is important, the brick-layer should have seen a doctor immediately. Yet he continued to work, without performing alternate tasks to reduce the repetitive motion of his job. When he finally saw the doctor, he was diagnosed with carpal tunnel syndrome in both wrists. Surgery was required on his right wrist. After recovering, he was able to return to work as long as he didn't lay bricks for eight hours a day. He alternated his brick laying with other tasks.

Employer's Role

• Use job rotation whenever possible.

• Demonstrate the correct use of tools. If available, use tools designed to reduce strain. Handles of tools should be foam-wrapped to enlarge and cushion the surface; offset screwdrivers and wrenches are preferred because they result in more lever action and use larger muscle groups.

Worker's Role

• Report any symptoms of hand or wrist pain or numbness to your supervisor.

• Avoid bending or pushing joints in abnormal positions.

• Stretch and use exercises to warm-up before starting work on your job.

Discussing Repetitive Motion Injuries

• Do you ever experience hand or wrist pains while performing your job?

• How can warm up exercises help you before you start work? What kinds of exercises can you do to prepare for your particular task?

• Could you change the way you hold your tools or set up your job to be less stressful to your hands and wrists? Would you be willing to try something new?