The correlation between selected measurements from footprint and radiograph of flatfoot.
OBJECTIVE
To assess the subarch angle obtained from electronic footprints using a capacitive mat transducer system in children with flatfeet, to evaluate other foot arch indexes, and to compare the results with radiographic measurements.


METHODS
A cross-sectional study.


METHODS
Rehabilitation clinic in a municipal hospital.


METHODS
Thirty-two children (age range, 7-13y) diagnosed with flatfeet.


METHODS
Radiographic measurements and foot shape measurements obtained from feet.


METHODS
Talo-first metatarsal angle, talocalcaneal angle, talo-horizontal angle, and calcaneal angle were obtained from radiographs. Subarch angle, arch indexes, and long plantar angle were all captured and calculated via a capacitive transducer plate.


RESULTS
Correlations between the subarch angle and the talo-first metatarsal angle, talo-horizontal angle, and arch height were significant, as was the correlation between midfoot arch index and talo-horizontal angle. The forefoot arch index had no significant relationship with radiographic parameters. The talo-horizontal angle and arch height had significant relationships with the long plantar angle.


CONCLUSIONS
Measurement of the subarch angle had significant correlation with the radiographic parameters in children with flatfeet and it was accurately and easily obtained from a capacitive forceplate. Measurement of the subarch angle can be a useful tool in the assessment and diagnosis of flatfoot.
Chen
Chia-Hsin
CH
Department of Physical Medicine and Rehabilitation, Chung-Ho Memorial Hospital, Kaohsiung Medical University, Taiwan.
Huang
Mao-Hsiung
MH
Chen
Tien-Wen
TW
Weng
Ming-Cheng
MC
Lee
Chia-Ling
CL
Wang
Gwo-Jaw
GJ
D000293:Adolescent; D001837:Body Weights and Measures / Q000379:methods*; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D005413:Flatfoot / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000534:rehabilitation; D005528:Foot / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D011859:Radiography