When relatively small abnormal stresses are repeatedly placed on normal joints, the injuries that result are called repetitive-stress injuries or cumulative-trauma disorders. The stresses placed on joints by poor posture, poor joint position during the performance of a task, and/or poor workstation ergonomics make these joints more likely to be injured.

There are three basic principles that are especially important when considering the impact of proper joint movement.

When lifting an object, be sure that the largest muscles in the area perform the task. The larger the muscle or muscle group utilized for lifting, the less the stress placed on smaller, more vulnerable muscles and the joint itself.

During any activities, you should be able to comfortably assume several different postures, to avoid staying in one posture for extended periods. Muscles will fatigue and joints are more likely to be injured when you hold a particular posture, especially a poor one, such as staying partially bent forward at the waist.

When performing tasks, keep the joints that are being used either in their neutral posture or approximately halfway into the range of motion. Working with your joints at the extremes of their ranges of motion for prolonged periods places abnormal stresses on those joints and can result in repetitive-stress injuries.

Presented as a service to the community by: Union County Chiropractic Clinic, 110 Skyline Drive, Maynardville, TN (865) 992-7000 www.unioncountychiropractic.com.