Biomechanical Testing, Training and Therapy: CON-TREX® WS


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Work simulation for the analysis and practice of the complex motion patterns of working environments, sports or everyday domestic life (ADL).

CON-TREX® WS was developed to imitate motions of working environments, sports and everyday domestic life. In order to be able to follow the unique and often extremely complex patterns of movement, the height of the dynamometer can be electronically adjusted from down close to the ground to up over the patient’s head. It can also be rotated and swivelled so that even unusual movement sequences can be realistically simulated. CON-TREX® WS allows reproducible evaluation of capacity for work. The most varying of motions from the everyday life of a craftsman (e.g. turning screws, pulling, pushing levers or turning wheels) can be simulated and trained. The machine can also be used to prepare for difficult working conditions, like overhead working. Furthermore, CON-TREX® WS facilitates the specific and highly-effective training of musculature. Space of just 2 x 2 meters is all that is required for this.

The dynamometer technology of CON-TREX® guarantees previously unequalled precision and sets new benchmarks when it comes to providing quality in diagnostic and therapeutic work. It functions play-free and with a 100% digitally controlled drive system. The controls are optimised to be simple in usage and easy to clean, while making sure that the risk of injury is kept to a minimum. The entire drive and controls system can be adapted at any time to future trends in physiotherapy thanks to the easy software upgrade and smoothly updated to the latest computer technologies.

In its ballistic mode, CON-TREX® has a one-of-a-kind controls system. Here, in order to compensate for the inertia of moving body parts, the expected motional development is calculated beforehand and the generated “inner strength” is continuously equalised. To this user, this means the following: the motion can be executed functionally, realistically and for longer at the desired target speed – particularly with minimal effort, at high motion speeds or when large body segments are being moved. CON-TREX® ballistic mode enables both isokinetic and isotonic work.

Another advantage is the active compensation for gravitational force during training and diagnosis. Patients with little strength are often unable to move individual segments of their bodies without assistance. This means that active compensation for these static weight influences is required. While the movement is being performed, the dynamometer can continuously reduce the external forces or even compensate for them completely; this produces a “gravity-free”’ situation for the patient where every movement can be performed with minimal expenditure of force.

CON-TREX® software also offers the option of merely measuring the forces acting on the movement, without active compensation. When evaluating data, the measured values can then be displayed as “gravity-corrected”.

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