Quantitative Diagnosis and Assessment
The Splayometer is the first commercial instrument purpose-built for measuring finger and hand extension and abduction force — delivering the objectivity and repeatability that diagnosis and rehabilitation requires.
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Measuring Extension & Abduction
Instruments for measuring grip strength and pinch force have been in clinical use for decades. But no commercial tool exists for the opposite motion — the force generated when fingers extend, spread, or open the hand against resistance.
Without an objective instrument, clinicians are forced to rely on manual muscle testing: a subjective, examiner-dependent method that introduces inter-rater variability and limits the reliability of clinical documentation.
No prior commercial instrument has existed for measuring extension or abduction force of the fingers or hand. The Splayometer addresses this gap directly.
Subjective Manual Muscle Testing
Therapists resist motion with their own hands and assign a grade — introducing variability and limiting detection of subtle changes.
Quantitative Force Measurement
The Splayometer delivers a precise, reproducible numerical force reading in pounds or kilograms — the same standards used for grip and pinch assessment.
Objective, Defensible Clinical Data
Baseline documentation, progress tracking, outcome measurement, and medico-legal reporting — all grounded in quantitative evidence.
Designed for Multiple Applications
The Splayometer measures the tensile force generated when a patient spreads fingers apart, extends a finger away from the thumb, or opens the hand against a resistance band.
Finger Rings
Hollow pliable rings sized for each digit — index through pinky and thumb. The patient inserts one finger per ring; the Splayometer measures the tensile force between them as they spread apart.
Hand Loop
A larger flexible loop that encircles all four fingers or the entire hand, enabling measurement of whole-hand extension and abduction force. Available in multiple sizes.
Twist-Lock Quick Release
A 90-degree turn locks or releases any attachment member. Clinicians can switch between fingers or swap to the hand loop mid-session without interrupting workflow.
Adaptable, Reliable and Accurate
The Splayometer combines advanced load cell technology with a rechargeable, battery-powered display module to deliver precise force measurement for clinical assessment.
Finger Extension, Adduction, and Hand Extension
- Capacitive stainless-steel IP65 rated cylindrical load cell
- Rechargeable, battery-powered display module; approximately 40 hours of battery life on a single charge
- Separate display and load cell allow flexible positioning during measurement
- Precise numerical force reading with tare/zero and calibration functions
- Holds the maximum value of each measurement until cleared by the clinician
- Average mode calculates and displays the average value of three successive measurements
Built for Therapists & Clinicians
- Establish quantitative baseline function at initial evaluation
- Track measurable rehabilitation progress over time
- Guide treatment decisions with objective data
- Document outcomes for medical and medico-legal purposes
- Assess individual digits in isolation or the full hand
- Compatible with standard three-trial measurement protocol
Interested in the Splayometer?
We are currently in the pre-production phase. We'd love to hear from clinicians and researchers who are interested in learning more.