Reproducibility of foot dimensions measured from 3-dimensional foot scans in children and adolescents with Down syndrome

Table 1 Participant characteristics – values are mean (SD) unless otherwise stated

Characteristic	Mean (SD)
Age, years	10.6 (3.9)
Females/males, n	18/12
Height (m)	1.30 (0.19)
Weight (kg)	40.1 (21.4)
BMI¹ (kg/m²)	21.9 (6.7)
Type of Down syndrome, n (Trisomy 21 / Translocation)	27/3
Level of intellectual disability (unclear/mild/moderate/severe)	9/12/9/0
Presence of hallux valgus, n (%)	4 (13.0)
Presence of digital deformity, n (%)	14 (46.0)
Foot Posture Index²	8.8 (1.8)
Arch Index³	0.30 (0.05)

¹Body mass index; ²Foot Posture Index; ³Arch Index. The Foot Posture Index scores range from −12 to + 12. Scores less than 1 indicate a supinated foot posture, scores between 1 and 7 indicate a normal foot posture, and scores greater than 7 indicate a pronated foot posture. Arch Index represents the ratio of the area of the middle third of a footprint to the entire footprint area, excluding the digits. Normal: 0.21 to 0.28, high: < 0.21 and low: > 0.28

ISSN: 1757-1146