Development and validation of a tactile sensitivity scale for peripheral neuropathy screening

Area of Science:

• Neurology
• Biomedical Engineering
• Sensory Neuroscience

Background:

• Peripheral neuropathy diagnosis relies heavily on subjective clinical examination, lacking objective and repeatable assessments.
• Current screening methods for hand peripheral neuropathy face uncertainty due to reliance on manual examination rather than precise devices.

Purpose of the Study:

• To develop and validate a high-resolution tactile pins-array scale for objective screening of gradual tactile sensory deficits in neuropathic diseases.
• To reduce diagnostic uncertainty in peripheral neuropathy screening by introducing a device-based assessment.

Main Methods:

• Development of a tactile pins-array scale with well-defined parameters using the non-invasive Dynamic Investigation Test-rig on hAptics (DITA) device.
• Experiments conducted on healthy subjects to penalize tactile sensitivity using five different pins-arrays.
• Creation of a six-level pins-array scale, categorized into low, uncertain, and normal tactile sensitivity ranges.

Main Results:

• A novel tactile pins-array scale was successfully created and validated.
• Pilot study on six neuropathic disease patients demonstrated the scale's effectiveness.
• The scale showed a significant role in supporting clinical screening and reducing diagnostic uncertainty.

Conclusions:

• The developed tactile pins-array scale offers an objective and repeatable method for screening tactile sensory deficits.
• This tool can significantly enhance the accuracy and reliability of peripheral neuropathy diagnosis.
• The DITA device-based scale represents a valuable advancement in clinical assessment for neuropathic conditions.