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Knee Pain on the Elliptical Trainer

author image Linda Tarr Kent
Linda Tarr Kent is a reporter and editor with more than 20 years experience at Gannett Company Inc., The McClatchy Company, Sound Publishing Inc., Mach Publishing, MomFit The Movement and other companies. Her area of expertise is health and fitness. She is a Bosu fitness and stand-up paddle surfing instructor. Kent holds a bachelor's degree in journalism from Washington State University.
Knee Pain on the Elliptical Trainer
A man and woman using elliptical machines. Photo Credit: FlairImages/iStock/Getty Images

The elliptical is seen as a panacea if you require low-impact cardiovascular exercise during recovery from a knee injury or as a good way to cross train to give your knees a break from higher-impact workouts. In some cases, such as when you suffer cartilage breakdown under your kneecap, the elliptical works well for this purpose. However, the biomechanics of these machines mean they are not ideal for your knees in every situation. Using an elliptical may lead to or worsen knee pain in some circumstances.

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The impact force of using an elliptical trainer is significantly lower than the force you experience when you walk or run. However, the forces across your knee joint and your hip joint are much greater when you use the elliptical than when you walk, notes Damien Howell, an orthopedic physical therapist from Richmond, Virginia. That means the elliptical is not ideal for everyone seeking to spare the knees. Your muscle strength and knee joint function are important factors to consider if you want to avoid worsening injuries during rehabilitative training, says T.W. Lu, lead author for a 2007 study published in “Medicine and Science in Sports and Exercise.” For example, if you have a muscle imbalance in your hip and thigh, you are at higher risk for knee pain when using an elliptical.

Patellar Tendonitis

If you are suffering patellar tendonitis, using the elliptical may worsen your condition, and you may feel this as pain while exercising on the machine. This condition affects the tendon that connects your shinbone and kneecap, also called the patella. The patellar tendon aids your muscles in extending your lower leg, such as when you push bike or elliptical pedals. The first symptom of this condition is usually pain, which may be sharp during activity, according to the Mayo Clinic. Initially the pain is likely to be present during or just after a workout. The pain is likely to increase with your exercise intensity. As the condition progresses, pain may be present before, during and after exercise.

Problems With Biomechanics

The artificial motion of the elliptical machine may interfere with your natural biomechanics and cause knee strain, says B. Sue Graves of the Florida Atlantic University department of exercise science, lead author for a 2007 study performed at the university. For example, if the base motion is inconsistent with your natural joint motion, this may cause additional stress on your joints. The artificial pause in the downward movement of your leg also may cause the movements of your hip and knee joints to be out of synch, leading to greater stress on your knees. A machine that has a stance that is too wide is especially likely to throw off your biomechanics and cause you to take unnatural strides that stress your knees, notes the All Ellipticals website.

Overuse Injuries

The cause of your knee pain may be as simple as going at your workout routine too hard, or doing too much too soon. If the pain is above your kneecap, you may have an overuse injury called quadriceps tendinitis, in which the tendon that attaches your quad muscles to your femur just above your kneecap is inflamed. This overuse injury is common among people who get into an exercise routine too quickly without first building a fitness base and among people who do lots of rapid acceleration and deceleration, such as high intensity interval training on the elliptical.

If you feel your pain on the outside of your knee, you may have the overuse injury known as iliotibial band syndrome. It’s caused by friction of this band over your knee and hip joints while running or performing other repetitive motions. This is common among women, who tend to have wider hips than knees.

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