The Biodex Medical System is the fastest way to identify, treat and document the physical impairments that cause functional limitations.

Combining the art and science of rehabilitation, the Biodex System continues to offer pioneering breakthroughs in neuromuscular testing and rehabilitation technology. Biodex assessments of physical impairments provides patients a fast, effective, documented return to function. The Biodex System is unusually sensitive to your patient’s limits. Progressive and interactive features keep you in complete control. Dynamic and static muscle loading environments provide unlimited combinations of technique and application.

Isokinetic Resistance Mode

  • The Isokinetic Resistance mode for testing and rehabilitation is totally accommodating throughout the entire range of motion. Biodex’s unique impact-free acceleration and deceleration eliminates joint trauma, allowing patients to exercise and be tested at more functional speeds. Resistance continuously matches effort, accommodating to variations in patient force output due to weakness, pain or fatigue at specific points in the individual’s range of motion.
  • Research along with over 25 years of clinical application has demonstrated that isokinetic resistance is a safe, objective means to quantify physical impairments with a high correlation to function. Isokinetic testing is the standard for muscle and joint assessment.
  • Applied torque response ensures that the patient’s limb velocity increases or decreases in proportion to the torque applied during acceleration and deceleration, enabling neuromuscular control measurements.
  • Choose concentric and eccentric contractions to perform isolated polymetric exercises.
    – Concentric torque up to 500 ft-lb (680 Nm) and eccentric torque up to 400 ft-lb (542 Nm) accommodates the demands of high-performance athletes and sports medicine researchers.


Reactive Eccentric Mode

  • The Reactive Eccentric mode for submaximal neuromuscular re-education in the early phases of rehabilitation
  • The System responds only to the patient’s force output. To initiate movement, the patient must produce and maintain a pre-determined minimum amount of force. This loads the muscles surrounding the joint, producing a pre- load, thus stabilizing and protecting the joint.
  • Eccentric torque up to 400 ft-lb (542 Nm)
    – Accommodates the demands of today’s athletes and sports medicine researchers.


Passive Motion Mode

  • The Passive Motion mode is a multi-function modality. Unique control properties allow for early intervention in all patients throughout all phases of rehabilitation.
  • Torque limits can be set as low as .5 ft-lb (.7 Nm). If a torque limit is exceeded during an eccentric contraction, the System stops. Once the patient’s torque output drops below the prescribed limit, movement is allowed. This unique capability allows patients to work safely at definitively prescribed sub-maximal force levels while combining isometric, concentric and eccentric contractions for:
    – decreasing joint effusion
    – increasing range of motion
    – developing strength
  • Passive speeds can be set as low as .25 degree per second and as fast as 300 degrees per second. The very slow speeds allow for overcoming the natural stretch reflex. Ideal for proprioceptive testing in early stages of rehabilitation.
  • Biodex software includes specific protocols for active and passive joint repositioning.
  • Higher speeds in passive mode are ideal for active assistive exercise.