Electrogoniometers and Torsiometers

Electrogoniometers (electronic goniometers) and Torsiometers are ideal for quick, simple, and accurate measurement of joint movement in multiple planes. Extremely robust, lightweight and flexible, the sensors can be comfortably worn undetected under clothing, without hindering the actual movement of the joint.

Biometrics' sensors are sold separately or as part of complete measurement systems. Available systems include instrumentation for static angle readout, dynamic on line data acquisition in 8, 16, or 24 channel configurations, or fully portable wireless data collection systems.

Twin-Axis Electrogoniometers

Twin-Axis Electrogoniometers (SG series) simultaneously measure angles in up to two planes of movement. For example, to measure wrist movements, the endblocks of the Electrogoniometer are attached on the dorsal surface using double sided tape (T10), one end over the third metacarpal, the other over the midline of the forearm, with the wrist in the neutral position.

The Electrogoniometer has two separate output connectors, one measures flexion/extension, the other radial/ulnar deviation. When used to measure a single-axis joint such as the knee or elbow, or when measuring a single plane of a twin-axis joint, simply connect one channel, the other remains redundant. All Twin-Axis Electrogoniometers function the same way, the difference being physical size.

Full Specifications

Low Profile Ankle Goniometer (SG110/A)

Low Profile Ankle Electrogoniometer

The NEW Low Profile Ankle Goniometer (SG110/A) has a slimmer endblock, facilitating more comfortable use when wearing footwear.

It is designed specifically for measurement of ankle motion in two planes. Attaching to the lateral aspect of the ankle, the SG110/A simultaneously measures ankle dorsiflexion/plantarflexion and inversion/eversion. This lateral placement of the goniometer has been the preferred choice of customers for many years. The standard SG110 is also available for customers desiring posterior placement on the ankle.

Full Specifications

Single-Axis Torsiometers (Q110 and Q150)

Single-Axis Torsiometers

Biometrics Ltd single-axis Torsiometers (Q series) are designed for measurement of rotations in one plane e.g. forearm pronation/supination or neck axial rotation. If the Torsiometer is bent in planes X-X or Y-Y the output remains constant. All Torsiometers function in the same way, the difference being physical size.

Full Specifications

Single-Axis Electrogoniometer

Biometrics' single-axis Electrogoniometer (F35) measures angles in one plane only. This smallest goniometer is designed to measure flexion/extension of finger or toe joints.

Full Specifications

Custom Design Electrogoniometer

Custom Design and Manufacturing

With the wide variety of applications for the sensor technology, Biometrics Ltd offers custom design and manufacturing to meet specific requirements. For example, waterproof sensors with integrated leads for use in pools or with underwater treadmills or specialty sensors for lower gastro intestinal diagnostics.


Electrogoniometer Durability

Transducer Type Strain gauge
Life1 600,000 cycles
Accuracyº ± 2º measured over a range of ± 90º
Repeatability 1º measured over a range of 90º
Operating temperature range +10ºC to +40ºC
Temperature zero drift 0.15 degrees angle / ºC

1Life test results have been collected by cycling the sensors through movements that would happen during everyday use. For example, placing a sensor on an adult elbow and moving from the neutral position to maximum flexion and back to the neutral position, the unit will function for typically 600,000 cycles.

'J' series cables, with locking connectors, are available in various lengths - J500 (500mm), J1000 (1000mm), J1500 (1500mm) - and connect the 'SG' and 'F' series goniometers and 'Q' series torsiometers to any of the wired Biometrics' interfaces. One cable per channel is required.

A pack of 10 rolls of medical grade double sided adhesive tapes (T10) for attachment of all electrogoniometers and torsiometers to the subject.

T10 Tape