Anatomical Concepts (UK)
Masters of Rehabilitation Engineering
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RehaGait

Gait Analysis Made Simple

Gait analysis is not new. Clinicians have long wanted reliable and objective ways of documenting movement in health and disease. RehaWatch is a product designed to make gait analysis practical for clinical use.

RehaWatch is an easy to use, clinically valid gait analysis system. Ideal for documenting patient progress without the complexity of many alternative systems.

Whether you are a doctor, a therapist or a trainer – RehaWatch provides objective, and time-saving assessment of movement disorders. The CE-certified system is already used today as medical product in all fields of rehabilitation for the therapy of gait and movement restrictions.

Special software and sensors provide extensive opportunities for researchers and developers in biomechanics and movement sciences.

Technical Aspects - Sensor Technology

The system utilises triaxial accelerometers, gyroscopes, and magnetometers (a total of 9 Degrees of Freedom).  The sensor is an inertial measurement unit (IMU) controlled by a microcontroller.  It can be integrated into a sensor network via Bluetooth.

Linear acceleration as well as angular velocity of complex motion sequences can be recorded with high sampling rates of up to 600 Hz. The highly configurable IMU offers multiple advantages:

  • freely configurable (sampling rate, measurement mode etc.)
  • internal memory (4 GB)
  • long battery life (11 hours)
  • wireless
  • calibrated
  • compact
  • flexible straps

The internal memory allows continuous data storage on the sensor. Therefore, the permanent connection to a receiver is not necessary.

Extend the mobility and flexibility of your application by using the portable RehaWatch receiver.

MotionLab – modular software for motion analysis

Clinical analyses and tests with the RehaWatch system can be performed easily, quickly, and objectively. The software provides individual solutions for PC or tablet. All modules are freely configurable and can be integrated in MotionLab. The use of the MotionSensor allows a real-time and location-independent analysis of the measurement.

Modules for motion analysis:
•   Gait analysis
•   Running analysis                   
•   TUG (Timed up and go test)

Articles

  1. Inertial sensor based reference gait data for healthy subjects. Renè Schwesig, Siegfried Leuchte, David Fischer, Regina Ullmann, Alexander Kluttig Gait & Posture 33 (2011), Issue 4,  673–678, Elsevier 2011 - Abtract
  2. Reliability of the novel gait analysis system RehaWatch René Schwesig/ Ralf Kauert/ Sylvia Wust/ Stephan Becker / Siegfried Leuchte Biomedizinische Technik/Biomedical Engineering. ISSN (Online) 1862-278X, ISSN (Print) 0013-5585, DOI: 10.1515/bmt.2010.025, March 2010 - Abtract
  3. Validitätsuntersuchung zum neuen, innovativen Ganganalysesystem RehaWatch von Hasomed Dr. phil. S. Derlien, B. Böhme, L. Leistritz, Prof. Dr. U.C. Smolenski Springer-Verlag , Manuelle Medizin August 2010, Volume 48,Issue 4 pp 254-259 - Abtracts
  4. Referenzdatenerhebung mit dem inertialsensorbasierten Ganganalysesystem RehaWatch von Hasomed Renè Schwesig, Marc Hofmann David Fischer, Till Gladow, Siegfried Leuchte, Orthopädie-Technik, 2010;61(12):874 ISSN:0340-5591
  5. Ermittlung eines Sturzindexes bei Pflegeheimbewohnern mittels Ganganalyse und Posturographie, Schwesig R, Forschungsbericht (2010), Matin-Luther-Universität Halle-Wittenberge
  6. Reference Values for Gait using Outcomes of the Gait Analysis System RehaWatchMarc Hofmann, D. Adolf, Wolfgang Liedecke Congress Lecture [3347] Abstract [522], Topic: Related Rehabilitation, 13th ISPO World Congress (2010), Leipzig - Abtract
  7. Der Einfluss des therapeutischen Reitens auf die Haltungsregulation. Haltung & Bewegung, Schwesig R., Neumann S., Richter D., Kauert R., Leuchte S. 1 (2009) jg 29, 14-22, Bundesarbeitsgemeinschaft für Haltungs- und Bewegungsförderung e.V. (BAG), Wiesbaden
  8. Vergleichsstudie zur Genauigkeit der Gangparameterbestimmung mit den Systemen RehaWatch und AMP Dynastream, Renè Schwesig, Forschungsbericht (2008), Martin-Luther-Universität Halle-Wittenberg
  9. Gait Analysis System on the Basis of Inertial Sensors.  Kauert R., Wolfgang Liedecke, Peter Weber, Conference-Paper, TAR (2007), Berlin
  10. Gait phase detection and step length estimation of gait by means of inertial sensors. Negaard N.-O., Andres S., Kauert R., Schauer T., Raisch J. Conference-Paper (2005), Prague, Czech Republic
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Data analysis possibilities

The analysis system is focused on the aspects of walking, which can be regarded as an indicator for gait quality.  During walking, the foot movement is measured, especially the patterns of acceleration and angular velocity that occur.  On this basis, gait variables are calculated:

Spatial-temporal parameters

  • Stride duration (s)
  • Stride length (m)
  • Cadence (/min)
  • Velocity (m/s)
  • Foot angle (°)
  • Ground clearance (cm)
  • Foot height (cm)
  • Circumduction (cm)

Gait phases (Modelled after J. Perry)

  • Periods
  • Functional tasks
  • Single gait phases

These gait parameters represent a measure for gait quality and are checked for compliance with specific normal ranges. Left-right-symmetries are calculated for all bipedal parameters.

Manufactured by our German partners

Hasomed GmbH info@hasomed.de

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