Distal Vibration Perception Threshold in Children Who Toe Walk

Area of Science:

• Neurology
• Pediatrics
• Sensory Processing

Background:

• Toe walking (TW) is a gait pattern characterized by excessive plantarflexion during ambulation.
• The sensory and neurological underpinnings of idiopathic toe walking are not fully understood.
• Investigating sensory perception in TW may reveal underlying mechanisms and inform clinical interventions.

Purpose of the Study:

• To compare distal vibratory perception thresholds and sensory profiles in children who toe walk (TW) versus age-matched controls.
• To determine if vibratory sensation deficits are present in TW children.
• To assess the correlation between vibratory perception and sensory processing patterns in TW.

Main Methods:

• Vibration perception threshold (VPT) was measured at the metacarpophalangeal (MCP) and metatarsophalangeal (MTP) joints in 11 TW children and 15 controls.
• Mean vibratory threshold (MVT) was calculated for each site.
• Sensory processing was evaluated using the Short Sensory Profile (SSP), with parent/caregiver responses analyzed.

Main Results:

• Mean vibratory thresholds (MVTs) at the MCP and MTP joints were significantly higher in the TW group compared to controls, indicating reduced vibratory sensation.
• MVTs at the MCP and MTP joints were highly correlated within both groups.
• Children who toe walked were more likely to exhibit scores in the 'probable difference' or 'definite difference' categories on the Short Sensory Profile (SSP).

Conclusions:

• Distal vibratory sensation is impaired in children who toe walk.
• Sensory perception deficits, particularly in vibratory sense, should be considered during the evaluation and clinical management of toe walking.
• Further research into sensory processing in TW is warranted to elucidate underlying mechanisms and optimize therapeutic strategies.