Use of a Wearable Accelerometer to Detect Pediatric Motor Activity Deficits: Child With Cerebral Palsy (CP) Undetected With the Mono-Arm Use Index (MAUI)

Developmental delays in children are common but can be difficult to detect by parents and pediatricians. Researchers looked at the ability of a wearable accelerometer to distinguish children with from those without upper extremity motor deficits suggestive of developmental delay. Asymmetric impairment was classified using the mono-arm use index (MAUI) and bilateral-arm use index (BAUI). Children with diagnosed asymmetric deficits were used to validate the MAUI. Children with asymmetric deficits use their dominant arms more than their affected arms; this video highlights a child with cerebral palsy who did not demonstrate motor disability during clinical evaluation and was thus misclassified by MAUI.