Different By Design™

Move beyond convention.

The JAS, JAS EZ and JAS Dynamic  ROM systems comfortably stretch your patients beyond what’s possible with the competition. The key to success is in product design. With patented Motion Tower™ and Motion Arc™ technology, JAS, JAS EZ and JAS Dynamic are the ONLY product lines that “unload the joint” – reducing painful joint surface loading during use. JAS geometry applies soft tissue distraction and stretch loads 90° to the extremity through the entire range of motion. JAS systems deliver pain free, patient-directed ROM therapy through a greater arc of motion than any other brand of stretch device. Move beyond the competition and see the proven outcomes achievable with JAS, JAS EZ, JAS Dynamic and JAS Advance Dynamic.

Joint Force – Biomechanics

The Right Features

The most effective treatment method for restoring joint mobility is manual therapy, including soft tissue distraction, applied by the skilled Therapist.  JAS’s unique geometry mimics the stretch techniques and soft tissue distraction forces that therapists apply, for optimal results. First, JAS device geometry displaces the stretching force away from the joint surface, which minimizes joint compression and maximizes mechanical stretch forces to the tissues. The stretching force is also applied ninety degrees to the extremity while it correctly follows the anatomical arc of motion of the joint. Second, the JAS design includes “Single Plane Positioning,” which virtually eliminates joint malalignment during treatment.  A single plane positioning design assures the patients’ joint is aligned in a single plane with the JAS Motion Tower™ or JAS Motion Arc™ throughout the entire arc of motion.

In contrast, competitive products are designed with the device fulcrum aligned directly across the joint axis to stretch the extremity, compressing the joint and articular cartilage. These compressive loads coupled with malalignment increase risk for the patient to experience discomfort and pain. Discomfort and pain result in poor patient compliance!

Several peer-reviewed studies (and over 20 years of successful clinical use) definitively show that JAS devices providing Low Load Stretching Forces are effective at restoring Range of Motion in a wide variety of conditions, including knee arthrofibrosis. These studies disprove a major product competitor’s claims that effective therapy for stiff and fibrotic joints can only be achieved with high torque, short duration stretch devices. JAS products provide safe and effective ROM restoration for all levels of joint stiffness.