Abstract (300 words maximum)

The CDC removed crawling as a milestone for children developing as of 2022[1], due to insufficient data and definitions. The purpose of this study was to collect data using a pressure mat and quadrupedal gait software on infant crawling patterns in children with limb loss or limb difference (LLD) and typically developing (TD) children in order to understand both how children with LLD crawl, and which parameters detect differences. The data collected was then converted into measurable outcomes such as cadence, velocity, weight distribution, and stance support.

The long-term objective of this study is to understand the quantitative parameters that are sensitive to known atypical development in order to inform identification and treatment strategies at an earlier age.

Participants: This analysis is a subset of a larger study and focused on 13 subjects: 7 in the LLD group and 6 mass-matched children in the TD group (one TD subject matched the mass of two LLD subjects). IRB approval was obtained and parents provided permission/consent for participation.

Apparatus: ASQ-3 form to determine typically developing status; PKMAS Zeno Walkway Pressure Mat, PKMAS4 analysis software.

Procedures: Infants were encouraged to crawl on the Zeno Walkway Mat for at least 3 passes of 5 or more crawling steps. Body mass and length were collected following crawling trials.

Data Analysis: Data were analyzed by a linear regression interaction model to compare the eight spatiotemporal and kinetic outcome measures between the mass-matched infant pairs.

When comparing mass-matched infants between groups there was a statistically significant difference (p

Among the 7 outcomes measured, three showed significantly significant differences. The study provides insight into strategies used by LLD when crawling.

Understanding crawling strategies used by infants with LLD can inform approaches to prosthetic prescription to assist with motor development.

REFERENCES

[1] Zubler, J.M. Pediatrics 149(3), e2021052138, 2022.

Academic department under which the project should be listed

WCHHS - Exercise Science and Sport Management

Primary Investigator (PI) Name

Dr. Mark Geil

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COMPARING CRAWLING DEVELOPMENT IN CHILDREN WITH LIMB LOSS/LIMB DIFFERENCE TO TYPICALLY DEVELOPING CHILDREN

The CDC removed crawling as a milestone for children developing as of 2022[1], due to insufficient data and definitions. The purpose of this study was to collect data using a pressure mat and quadrupedal gait software on infant crawling patterns in children with limb loss or limb difference (LLD) and typically developing (TD) children in order to understand both how children with LLD crawl, and which parameters detect differences. The data collected was then converted into measurable outcomes such as cadence, velocity, weight distribution, and stance support.

The long-term objective of this study is to understand the quantitative parameters that are sensitive to known atypical development in order to inform identification and treatment strategies at an earlier age.

Participants: This analysis is a subset of a larger study and focused on 13 subjects: 7 in the LLD group and 6 mass-matched children in the TD group (one TD subject matched the mass of two LLD subjects). IRB approval was obtained and parents provided permission/consent for participation.

Apparatus: ASQ-3 form to determine typically developing status; PKMAS Zeno Walkway Pressure Mat, PKMAS4 analysis software.

Procedures: Infants were encouraged to crawl on the Zeno Walkway Mat for at least 3 passes of 5 or more crawling steps. Body mass and length were collected following crawling trials.

Data Analysis: Data were analyzed by a linear regression interaction model to compare the eight spatiotemporal and kinetic outcome measures between the mass-matched infant pairs.

When comparing mass-matched infants between groups there was a statistically significant difference (p

Among the 7 outcomes measured, three showed significantly significant differences. The study provides insight into strategies used by LLD when crawling.

Understanding crawling strategies used by infants with LLD can inform approaches to prosthetic prescription to assist with motor development.

REFERENCES

[1] Zubler, J.M. Pediatrics 149(3), e2021052138, 2022.