The SS20 goniometer is a dual output device that can provide simultaneous measurements around two orthogonal rotational axes (e.g., wrist flexion/extension and radial/ulnar deviations). The gauge mechanism allows for accurate measurement of polycentric joints. Telescopic endblocks compensate for changes in distance between the two mounting points as the limb moves. Goniometers attach to the body using TAPE2 medical adhesive tape. One TEL100C channel is required for each output; accordingly, to measure both axes simultaneously, this twin-axis goniometer requires two TEL100C channels.
The SS20 and SS21 are dual output devices used to measure limb angular movement.
The SS22 and SS23 are single output devices used to measure axial rotation about a single plane (e.g., forearm pronation/supination).
The SS24 is used to measure finger joint movement (single axis goniometer).
Suggested reading for additional information on goniometry: Legnani G, Zappa B, Casolo F, Adamini R, Magnani PL. A model of an electro-goniometer and its calibration for biomechanical applications. Med Eng Phys. 2000 Dec;22(10):711-22.
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