Digital craniocorpography and peripheral vestibular diseases.

Area of Science:

• Neurology
• Biomechanics
• Ophthalmology

Background:

• Peripheral vestibular diseases (PVDs) often present with subjective symptoms but lack objective clinical signs.
• Accurate diagnosis of PVDs requires objective measures to differentiate between normal and affected populations.

Purpose of the Study:

• To identify distinct movement patterns indicative of PVDs using a motion analysis laboratory.
• To compare the stepping test results of PVD patients with those of asymptomatic individuals.

Main Methods:

• Utilized the VICON 370 system for digital motion capture during the Unterberger-Fukuda stepping test.
• Compared kinematic data from 38 PVD patients (diagnosed via otoneurological workup) with 21 asymptomatic volunteers.

Main Results:

• While lateral sway, linear/total displacement, shoulder oscillation, and torticollis angle showed no significant differences between groups.
• Stepping time, body spin, and angular deviation were statistically increased in the PVD patient group.

Conclusions:

• Specific dynamic parameters from the stepping test, namely increased stepping time, body spin, and angular deviation, can serve as objective markers for PVD diagnosis.
• Motion analysis provides a valuable tool for quantifying subtle movement alterations in peripheral vestibular diseases.