CON-TREX® MJ

Isokinetic multijoint module for testing and training the major joints

Highlight features of CON-TREX® MJ

Product description

With the control module PM and a wide range of adapters which are needed for the scheduled tasks, the CON-TREX® MJ isokinetic multijoint module is a versatile, rotatory testing, training and therapeutic system to test and train all major joints of the upper and lower limbs in the open kinetic chain. The highly flexible mechanism with excellent operator guidance makes objective and reproducible test results possible in every work mode. The mechanical design of the CON-TREX® MJ is extremely user-friendly: the position of the seat, the seat length, and the inclination of the backrest can be electronically adjusted at the touch of a button. The upholstered seat and backrest offer a maximum of comfortable seating even during long training sessions and are easy to clean.
Training while sitting or standing, measurements in the prone or supine position: CON-TREX® MJ offers maximum flexibility in every case. It enables the analysis of both the static and dynamic strength of a joint and the resulting targeted functional musclestrength training and improvement to skills of coordination with possible monitoring and correction during training or therapy.
Thanks to its flexible system, the CON-TREX® MJ allows adjustment close to the joints with maximum stability. The adapters are perfectly adjustable to the anatomical situation of the subject. Isolated joint tests as well as free movements are possible with the wide range of accessories.

Features

  • high-precision isokinetic mode
  • ballistic mode
  • active compensation of gravity
  • unique combined load types
  • precise and very close adjustment of the rotary axis of the dynamometer in relation to the joint axis
  • sampling rate of 4000 Hz for highest precision
  • play-free drive train
  • EMG synchronisation
  • three-level safety concept
  • individually customisable reports

human kinetics software

The human kinetics software allows easy separation of databases, thereby enabling different internal departments or scientific areas within the same facility to work independently. The presentation of the numerous report designs can be customised. Export to other data processing programs is done easily via the ASCII interface. Anonymisation of the data for scientific work is easily possible.
The detailed online help provides direct notes on the current menu item or the operation being performed, with images and graphics. Above all, the detailed information on the numerous movement performances clarifies both the positioning of the subject / patient and the use of the required adapters.

Therapy information

CON-TREX® can be used in early diagnostic and preventative therapy for injuries to the musculoskeletal system in out-patient rehabilitation and in the clinic. It is also used in scientific research and performance optimisation and facilitates the careful and specific analysis of problems and thus the highly efficient training of top athletes.

CON-TREX® machines are suited to measurement and analysis thanks to the high levels of precision and are thus especially well-suited to scientific use. In training and therapy, they aim to improve muscle capabilities (in both the strength and stamina areas) as well as sensorimotor skills.  Thanks to its versatile measuring capabilities and the intuitive exercise software, CON-TREX® is excellently suited to the following applications:


Orthopaedic rehabilitation and traumatology:
CON-TREX® enables the early diagnosis and prevention of damages or injuries to the musculoskeletal system in out-patient rehabilitation and in clinical use.

Diagnosis and rehabilitation of musculoskeletal deficiencies
Muscular disbalances can disrupt the ideal sequence of movements and may have damaging effects on the joints or, depending on the type of sport, can even be desirable or required. CON-TREX® helps to record, detect and analyse these disbalances. In addition, CON-TREX® machines can be used to efficiently eliminate muscular disbalances. One particular benefit is in the fact that the tested movement can be trained at the same time.

Joint replacement
CON-TREX® machines can be used in the area of geriatric rehabilitation after artificial joint replacement in particular. Even at very low available muscular strength patients can actively train and improve their muscularity at a sensible speed of motion. This means that the loss of strength is kept to a minimum and the mobility of the joints either remains the same or is improved.

Neurological rehabilitation:

When performance is diminished for neurological reasons, for example, after a brain injury or a stroke, rehabilitation work focuses on restoring coordination and control of the work done by the muscles. The German Society for Neurology demands the early functional mobilisation of patients who are after having suffered a stroke. CON-TREX® is suited to this task thanks to its exercise and training function in a continuously passive motion mode: The affected patient's limb is moved by CON-TREX® while the patient can simultaneously attempt to autonomously control and move the limb. CON-TREX® simultaneously visualises the ongoing performance of the patient, that is, training can be followed in real-time on the monitor and even the smallest of advances is immediately reproduced on the screen. This adds to the patient's motivation to increase the effectiveness of the rehabilitation through their active cooperation. This can only be achieved to a limited extent using "classic" training methods. Bio-feedback training, especially with a submaximal load, not only enables efficient correction of muscular deficiencies, but is also an excellent method of improving coordination abilities.

Optimised performance in competitive sports:
CON-TREX® machines are used in competitive sport, most of all when it comes to objectively evaluating physique and optimising the progression of training of competitive and top-level athletes. Various strength tests which can be carried out at regular intervals provide both trainers and athletes with precise feedback on the effectiveness of their training methods. Within the framework of motion analyses for the optimisation of motion sequences specific to particular sports, precise problem analyses can also be generated using combined EMG evaluations. When rehabilitating top athletes after injuries, CON-TREX® machines facilitate highly efficient training sessions and contribute towards the sensible use of the injury period.

Science and research:
Thanks to the high levels of precision of CON-TREX® machines, the objective evaluation of every patient at the highest validity rates possible is given. CON-TREX® archives all relevant system parameters which could be of importance to scientific evaluation. In addition, the unique ballistic mode ensures the smooth execution of both motion sequence and measurement. This active gravity compensation facilitates both absolute and relative observation of the values. When used in science and research, the CON-TREX® machines set previously unequalled high standards in regard to accuracy of measurement and reproducibility of the collected parameters. 

Accessories

Inbussschlüssel 14

Allen wrench 14

Order number
Quantity
50740000
[1]
Dynamometer-Klemmung für CON-TREX MJ

Dynamometer clamping device for CON-TREX® MJ

Order number
Quantity
10600000
[1]
Gebrauchsanweisung CON-TREX

Operating instructions CON-TREX®

Order number
Quantity
99999999
[1]
Schulterpolster anthrazit

Shoulder pad anthracite

Order number
Quantity
50750001
[2]
Gurt Sitzbefestigung MJ 75 cm mit Schrauben und Anker

Strap seat attachment MJ 75 cm with screws an...

Order number
Quantity
50920000
[1]
ACL (Kreuzband) Schutz-/Anti-Schublade-Adapter

ACL (anterior cruciate ligament) Protection/a...

Order number
50551000
Sprunggelenk-Adapter

Ankle adapter

Order number
50340000
Grundadapter für freie Bewegung

Base adapter for free movement

Order number
50160000
Grundadapter lang

Base adapter long

Order number
50010000
Grundadapter kurz

Base adapter short

Order number
50400000
Satz Adapter Einsätze, komplett mit Steckbrett 50660000

Complete set of small inserts including tray ...

Order number
50670000
Distanzstab 30 cm für freie Bewegung (Kohlefaser)

Distance rod 30 cm for free movement (carbon ...

Order number
50630000
Distanzstab 60 cm für freie Bewegung (Kohlefaser)

Distance rod 60 cm for free movement (carbon ...

Order number
50640000
Doppelgriff für freie Bewegung

Double hand grip for free movement

Order number
50620000
EMG Platine für MJ/WS/LP, V01

EMG board for MJ/WS/LP, V01

Order number
50990000
EMG Verbindungskabel

EMG interconnect cable

Order number
50520000
Ellbogen-Adapter für Sup/Pro

Elbow adapter Sup/Pro

Order number
50360000
Hand-Adapter

Hand adapter

Order number
50180000
Handgriff links für MJ

Hand grip for MJ system, left

Order number
50591000
Handgriff rechts für MJ

Hand grip for MJ system, right

Order number
50592000
Hüft-Adapter

Hip adapter

Order number
50151000
Knie-Adapter

Knee adapter

Order number
50071000
Bein-Stabilisator

Leg stabiliser

Order number
50230000
Schulter-Adapter

Shoulder adapter

Order number
50200000
Adapter für Schulter-Rotation

Shoulder rotation adapter

Order number
50330000
Einzelgriff flexibel für freie Bewegung

Single hand grip flexible for free movement

Order number
50610000
Einzelgriff starr für freie Bewegung

Single hand grip rigid for free movement

Order number
50600000
Stützrolle, beidseitig

Stabilisation bar with roll, bilateral

Order number
50480000
Stützrolle einseitig, Ø 135 mm

Stabilisation bar with roll, unilateral, Ø 13...

Order number
50370000
Stützrolle einseitig, Ø 95 mm

Stabilisation bar with roll, unilateral, Ø 95...

Order number
50560000
Stütze Schulterrotation

Stabilisation for shoulder rotation

Order number
50581000
Lenkrad, Durchmesser 37 cm

Steering wheel, diameter 37 cm

Order number
50720000
Klemmung für Stützen

Support clamping device

Order number
50100000
Stützauflage breit

Support large

Order number
50291000
Stützauflage schmal

Support narrow

Order number
50111000
Stützschiene lang

Support rail long

Order number
50320000
Stützschiene kurz

Support rail short

Order number
50220000
Upgrade CON-TREX® PM

Upgrade CON-TREX PM

Order number
60000002
Lochwand für Standard-Adapterset

Wallboard for set of standard adapters

Order number
50680001
Handgelenk Ex/Flex Adapter

Wrist adapter

Order number
50020000

Bibliography

CON-TREX® - reliability and validity

Caruso J., Brown L.E., Tufano J.J. (2012): The reproducibility of isokinetic dynamometry data. Isokinet Exerc Sci 20:239–53. doi:10.3233/IES-2012-0477.

Cotte T., Ferret J.M. (2003): Comparative study of two isokinetic dynamometers: CYBEX NORM vs. CON-TREX® MJ. IOS Press Isokinetics and Exercise Science 11(1), 37-43.

Guilhem G., Giroux C., Couturier A., Maffiuletti N.A. (2014): Validity of trunk extensor and flexor torque measurements using isokinetic dynamometry. J Electromyogr Kinesiol http://dx.doi.org/10.1016/j.jelekin.2014.07.006.

Maffiuletti N.A., Bizzini M., Desbrosses K., Babault N., Munziner U. (2007): Reliability of knee extension and flexion measurements using the Con-Trex isokinetic dynamometer. Clin Physiol Funct Imaging 27, 346-353.

Müller S., Baur H., König T., Hirschmüller A., Mayer F. (2007): Reproducibility of isokinetic single- and multi-joint strength measurements in healthy and injured athletes. Isokinetics and Exercise Science 15, 295-302.

Müller S., Mayer P., Baur H., Mayer F. (2011): Higher velocities in isokinetic dynamometry: A pilot study of new test mode with active compensation of inertia. IOS Press, Isokinetics and Exercise Science 19, 63–70 63, DOI 10.3233/IES20110398.

Müller S., Stoll J., Müller J., Mayer F. (2012): Validity of isokinetic trunk measurements with respect to healthy adults, athletes and low back pain patients. Isokinet Exerc Sci 20, 255–66. doi:10.3233/IES-2012-00482.

Müller J., Müller S., Stoll J., Fröhlich K., Baur H., Mayer F. (2014): Reproducibility of maximum isokinetic trunk strength testing in healthy adolescent athletes. Sports Orthop. Traumatol. 30, 229–237.

CON-TREX® - clinical and scientific application

Baray A.L., Philippot R., Farizon F., Boyer B., Edouard P. (2014): Assessment of joint position sense deficit, muscular impairment and postural disorder following hemi-Castaing ankle ligamentoplasty. Orthop Traumatol Surg Res 100 (6 Suppl), 271-4. doi:10.1016/j.otsr.2014.02.014. Epub 2014 Aug 22.

Baray A.L., Philippot R., Neri T., Farizon F., Edouard P. (2016): The Hemi-Castaing ligamentoplasty for chronic lateral ankle instability does not modify proprioceptive, muscular and posturographic parameters. 24(4), 1108-15. doi:10.1007/s00167-015-3793-3.

Baur H., Müller S., Hirschmüller A., Huber G., Mayer F. (2006): Reactivity, stability and strength performance capacity in motor sports. Br J Sports Med 40, 906-911.

Baur H., Müller S., Pilz F., Mayer P., Mayer F. (2010): Trunk extensor and flexor strength of long-distance race car drivers and physically active controls. J Sports Sci 28: 1183–1187.

Edouard P., Castells J., Calmels P., Roche F., Degache F. (2010): Cardiovascular and metabolic responses during isokinetic shoulder rotators strength testing in healthy subjects. ISSN 0959-3020/10 Isokinetics and Exercise Science 18, 23–29 23. doi:10.3233/IES-2010-0363 IOS Press 23-29.

Edouard P., Bankolé C., Calmels P., Beguin L., Degache F. (2013): Isokinetic rotator muscles fatigue in glenohumeral joint instability before and after Latarjet surgery: a pilot prospective study. Scand J Med Sci Sports 23(2), 74-80. doi:10.1111/sms.12011. Epub 2012 Nov 1.

Edouard P., Degache F., Oullion R., Plessis J.Y., Gleizes-Cervera S., Calmels P. (2013): Shoulder strength imbalances as injury risk in handball. Int J Sports Med 34(7), 654-60. doi:10.1055/s-0032-1312587. Epub 2013 Feb 26.

Francis P., Toomey C., Mc Cormack W., Lyons M., Jakeman P. (2016): Measurement of maximal isometric torque and muscle quality of the knee extensors and flexors in healthy 50- to 70-year-old women. Clin Physiol Funct Imaging 28, n/a–n/a. doi:10.1111/cpf.12332.

Hirschmüller A., Konstantinidis L., Baur H., Müller S., Mehlhorn A., Kontermann J., Grosse U., Südkamp N.P., Helwig P. (2011): Do changes in dynamic plantar pressure distribution, strength capacity and postural control after intra-articular calcaneal fracture correlate with clinical and radiological outcome? Injury 42, 1135–43. doi:10.1016/j.injury.2010.09.040.

Hirschmüller A., Andres T., Schoch W., Baur H., Konstantinidis L., Südkamp N.P., Niemeyer P., (2017): Quadriceps Strength in Patients With Isolated Cartilage Defects of the Knee: Results of Isokinetic Strength Measurements and Their Correlation With Clinical and Functional Results. Orthopaedic Journal of Sports Medicine 5:232596711770372. doi:10.1177/2325967117703726.

Liebensteiner M.C., Platzer H.P., Burtscher M., Hanser F., Raschner C. (2012): The effect of gender on force, muscle activity, and frontal plane knee alignment during maximum eccentric leg-press exercise. Knee Surg Sports Traumatol Arthrosc 20, 510–516. DOI 10.1007/s00167-011-1567-0.

Mueller J., Mueller S., Stoll J., Baur H., Mayer F. (2014): Trunk Extensor and Flexor Strength Capacity in Healthy Young Elite Athletes Aged 11–15 Years. Journal of Strength and Conditioning Research 28, 1328–34. doi:10.1519/JSC.0000000000000280.

Mueller S., Mueller J., Stoll J., Cassel M., Hirschmüller A., Mayer F. (2017): Back Pain in Adolescent Athletes: Results of a Biomechanical Screening. SMIO 01, E16–E22. doi:10.1055/s-0042-122713.

Mueller S., Mueller J., Stoll J., Engel T., Mayer F. (2017): Back pain risk factors in adolescent athletes: suitability of a biomechanical screening tool? British Journal of Sports Medicine 51, 364–5. doi:10.1136/bjsports-2016-097372.205.

Rahm S., Spross C., Gerber F., Farshad M., Buck F.M., Espinosa N. (2013): Operative treatment of chronic irreparable Achilles tendon ruptures with large flexor hallucis longus tendon transfers. Foot Ankle Int 34(8), 1100-10. doi:10.1177/1071100713487725. Epub 2013 Apr 26.

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