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art science

Systems manugraphy

The manugraphy® system* is an accurate and reliable system to measure the hand forces while gripping. For the first time it is possible to determine the force of each single finger and even the phalanges. The individual force contributed by each part of the hand – the finger, phalanx, or palm – is measured separately. These detailed information enable to achieve a truly objective biomechanical analysis of the hand.

Technical data for the manugraphy® analyser:

  • Number of sensors (max): 1,024
  • Measurement frequency: 20,000 sensors/second
  • Computer interface: USB
  • Power supply: external power adapter
  • Operating system: current Windows OS

manugraphy analyser

Technical data for the manugraphy® sensor mats:

  • Number of sensors: 29 x 32
  • Scanned sensors: 22 x 32 or 29 x 32 (depends on used test cylinder)
  • Sensor resolution: 2 sensors per cm²
  • Size of one sensor: 7.07 x 7.07 mm2
  • Pressure range: 10 - 600 kPa
  • Thickness: approx. 1.5 mm

The manugraphy® sensor mats are wrapped around a specific test cylinder. The test cylinders are available with diameter 50 mm and 67 mm (incl. sensor mat).

manugraphy cylinder


* Important note for users inside the EC: The manugraphy® system is not certified as a medical device according to 93/42/EEC.

Technical data for the manugraphy® sensor mats:

  • Number of sensors: 29 x 32
  • Scanned sensors: 22 x 32 or 29 x 32 (depends on used test cylinder)
  • Sensor resolution: 2 sensors per cm²
  • Size of one sensor: 7.07 x 7.07 mm2
  • Pressure range: 10 - 600 kPa
  • Thickness: approx. 1.5 m

The manugraphy® sensor mats are wrapped around a specific test cylinder. The test cylinders are available with diameter 50 mm and 67 mm (incl. sensor mat).

manugraphy cylinder

manugraphy® Software

Features included:

Data organization software

  • Predefined databas
  • Organises patient data and manugraphy® data
  • Initialises the manugraphy® system
  • Allows queries

Data acquisition software

  • Acquisition, storage and visualization in colour of dynamic load distribution data
  • View of absolute pressure values in each sensor
  • Playback of dynamic measurement
  • View maximum pressure, force and contact area
  • Maximum pressure picture (MPP), mean value picture (MVP)
  • Screen hardcopy and printout in original size
  • Storage of collected data with comments
  • Colour 3d display of load distribution
  • Choice of several definable sensor areas for different anatomical regions (masks) with calculated maximum pressure and total force in each mask
  • Audio cueing for start and stop of gripping

Data evaluation software
The software divides periodic load changes (cycles) into individual data files, in order to analyse and average them in the manugraphy® report.

  • The manugraphy® report allows automatic calculation of the averaged loading values out of many dynamic measurement cycles i.e. left versus right or pre- vs. post treatment. The result is an automatically generated report which lists the results in a standard form.
  • The first report page contains patient’s data, his history, diagnosis, and comments imported straight from the database. Two pictures show the maximum pressure pictures for both the left and right hand in 2D and 3D. The logo of the health center can be uploaded as a picture. The footer contains the report issuing date, name of the physician, date of visit, patient ID and patient name.
  • Furthermore, maximum force, time-force integrals, and maximum peak pressure are shown separately for the predefined anatomical areas (five fingers and palm).
  • Local loading measured in the different areas is shown in columns for both the left and right hand or one hand pre and post.
  • Average values and standard deviation are displayed as well.
  • The averaged file of the grip process is displayed also dynamically for both the left and right hand or pre-post, playback can be effected frame by frame or on a loop.
  • The manugraphy® report is in html form and can be forwarded per email, or handed over as printout.

Technical data for the manugraphy® analyser:

  • Number of sensors (max): 1,024
  • Measurement frequency: 20,000 sensors/second
  • Computer interface: USB
  • Power supply: external power adapter
  • Operating system: current Windows OS

manugraphy analyser

manugraphy - hand assessment

main-button manugraphy


manugraphy® - hand assessment


isobar picture of a flat hand  

novel‘s manugraphy® system* is an accurate and reliable system to measure the hand forces while gripping. Up to now, functional hand assessment could only quantify the total force, for example with a dynamometer.

The manugraphy® system newly developed by novel offers a key advantage over the conventional systems: It is able to determine the force of each single finger and even the phalanges. The individual force contributed by each part of the hand – the finger, phalanx, or palm – is measured separately. These detailed information enable to achieve a truly objective biomechanical analysis of the hand.

In order to measure the local forces underneath the hand, 896 highly accurate force sensors are applied to the surface of two cylinders of different diameters, suitable for different hand sizes. Each single sensor is sampled 20 times per second by the manugraphy® analyser, and the measured forces are allocated to the respective fingers, phalanges, ball of the hand, and thumb. In a dynamic measuring mode, it is possible to identify the current local forces as well as the average forces per gripping sequence. Subsequently, the whole measuring process in its dynamic course can be reproduced.

The data are displayed in 2D, 3D and in isobars, showing the absolute force of each sensor element. An acoustic signal that tells the subject when to grip and release allows for a standardised test procedure. With these detailed and objective functional analyses of the different hand areas, the user is able to compare different grasping actions.

force distribution while gripping a cylinder the contribution of each single finger and the thumb

The manugraphy® system and its special audio feedback system can also be used in trainings. The person is able to carry out different gripping tasks independently, and the results can be objectified.

manugraphy® software

The manugraphy® software provides the user with a fast and extensive analysis of the persons hand function. A special database stores and organises the master data as well as the individual measurements, and makes a direct comparison of different situations possible.

The manugraphy® measurement software facilitates the configuration and selection of different measuring modes, for bigger and for smaller cylinders, for case-specific analyses, and for biofeedback training. Audio instructions lead the person through the gripping process, and give information on the gripping force. A standardised testing is guaranteed.

The measurement data are displayed online on the PC. With a 2D or 3D view of the local forces, the user is able to carry out an accurate functional analysis of both hand and fingers.

The contribution of each single finger and thumb to the total force is the most relevant information. By partitioning the measurement area into subareas for each finger and the palm of the hand, it is possible to accurately indicate the gripping force and its temporal variation. In this way, the user can evaluate functional changes of the hand load.

With the help of simultaneous videostreams, the  movements of the different fingers can be optically displayed and documented.

manugraphy® analyser




* Important note for users inside the EC: The manugraphy® system is not certified as a medical device according to 93/42/EEC.

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