Biomechanical Inversion/Eversion Goniometer - 180° Measurement Range

This precision biomechanics goniometer measures joint range of motion (ROM) for inversion and eversion at the ankle. Designed for clinical accuracy and everyday durability, it supports assessment, treatment planning, and progress tracking in podiatry, physiotherapy, orthotics, and sports medicine.

What It Does

The device features a transparent 360° tractograph with clear degree markings and an operational 180° measurement range. It is calibrated to the ISOM system to deliver consistent, standardised readings aligned with accepted clinical methods.

Key Features & Benefits

• Accurate inversion/eversion measurement for ankle ROM assessment.
• Transparent 360° tractograph improves landmark alignment and visibility.
• 180° range covers typical clinical requirements with ease.
• ISOM-calibrated for reliable, repeatable measurements across clinicians.
• Low parallax design helps minimise reading errors.
• Lightweight, durable build suitable for daily clinic or field use.

Clinical Applications

• Assessing ankle mobility and foot alignment.
• Monitoring rehabilitation progress post-injury.
• Evaluating outcomes of orthoses, taping, or footwear interventions.
• Teaching biomechanics and clinical measurement techniques.

How to Use (At a Glance)

1. Position the centre over the subtalar joint axis as indicated by landmarks.
2. Align stationary arm with the tibial shaft; align moving arm with the calcaneal bisector.
3. Guide the patient through inversion or eversion; read degrees at end range.
4. Record side, position (weightbearing/non-weightbearing), and any symptoms.

Care

• Wipe with alcohol-based or mild detergent wipes.
• Avoid excess heat or solvents to preserve calibration.
• Store flat to prevent warping.

Note: Always compare with contralateral side and document testing conditions for reproducibility.