Biodex Isokinetic

What are the advantages of Biodex Isokinetic?

Nothing can duplicate the performance of the Biodex Isokinetic System. It is the only safe way to load a dynamically contracting muscle to maximum capability throughout its entire range in a continuous motion using either functional positions or isolated incorrect biomechanical positions. A Biodex Isokinetic contraction recruits a larger number of muscle fibers than any other method of exercise. Biodex Isokinetic resistance accommodates Pain, Fatigue and Musculoskeletal leverage. The resistance a patient encounter is in direct proportion to the effort, a patients will never encounter more resistance than they are capable of applying.

Range Of Motion:

Slow steady passive motion throughout the entire available range. Gentle sustained stretching at end of the available range allows for an increased range of joints as tolerated with decreased risk of tearing.

Decreased Joint Compressive Forces: 

High-speed Isokinetic minimizes joint compression and translational forces while it strengthens the musculature. Biodex Isokinetic allows high speeds even in short arc patterns.


Not knowing all of the processes that follow ACL surgery can lead to fear and uncertainty. The Biodex Test is generally required by orthopedic surgeons at approx. 6 months post surgery to determine the patient’s readiness to return to their desired activity. The Biodex test involves utilizing a computer assisted machine to assess the patient’s isokinetic strength, which refers to an object moving at a constant speed with a varied resistance throughout a range of motion. The Biodex testing technique can be used at any joint in the body.

When performing the Biodex test at the knee joint, the patient sits in an upright chair with their leg strapped to a movable part of the machine. The patient is instructed to fully straighten and then fully bend the knee for multiple repetitions. When performing these two motions, knee extension and knee flexion, the machine is able to measure the strength output by muscles on both sides of the upper leg.  Resistance varies throughout the test, but will always be at a safe resistance level to limit joint compression forces, allow for pain free motion, and give quality data to measure strength output during the entire range of motion.

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