Reliability of foot caliper.
OBJECTIVE
To determine the reliability of foot caliper


METHODS
Descriptive study.


METHODS
Rehabilitation Medicine Outpatient Department, King Chulalongkorn Memorial Hospital.


METHODS
Fifteen volunteers were recruited from Rehabilitation residents and health care professionals of Department of Rehabilitation Medicine, King Chulalongkorn Memorial Hospital.


METHODS
The authors created 3 sets of simple Foot Caliper and measured foot dimension including foot width, foot length and toe depth while subjects stood with equal weight bearing to both feet. The authors set 3 examiners to measure foot dimension by the same method. To determine reliability of 3 sets of foot caliper, one examiner was assigned to measure foot dimension of 30 feet with all calipers. To determine the reliability of examiners, all examiners measured foot dimension of the same 30 feet. All parameters were recorded in millimeters. The data was analyzed and presented as intraclass correlation coefficients (ICC) with 95% CI.


RESULTS
There were fifteen volunteers (8 men and 7 women). The average age was 28.6 +/- 4.11 years (range 22-39). Average foot width,length and great toe depth (millimeters) were 9.64 +/- 0.63, 24.17 +/- 1.10 and 1.91 +/- 0.24 respectively. For reliability analysis of 3 sets off foot caliper, the intraclass correlation coefficients (ICC) with 95% CI were 0.985 (0.972-0.992), 0.996 (0.992-0.998) and 0.982 (0.968-991) for foot width, length and great toe depth, respectively. For Inter-examiner reliability, intraclass correlation coefficients (ICC) were 0.941 (0.864-0.969), 0.850 (0.46-0.920) and 0.834 (0.721-0.910) for foot width, length and great toe depth, respectively. These results showed high agreement of data.


CONCLUSIONS
These simple foot calipers have high reliability forf oot measurement. These devices are appropriate for clinical use.
Janchai
Siriporn
S
Department of Rehabilitation Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Tantisiriwat
Natthiya
N
D000328:Adult; D000886:Anthropometry / Q000295:instrumentation*; D017719:Diabetic Foot / Q000503:physiopathology; D004867:Equipment Design; D005260:Female; D005528:Foot / Q000033:anatomy & histology*; D006801:Humans; D008297:Male; D009983:Orthopedic Equipment / Q000592:standards*; D009989:Orthotic Devices; D015203:Reproducibility of Results; D012775:Shoes