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Measurement of forefoot varus angle by laser technology in people with flexible flatfoot
CHEN MJL; CHEN CPC; LEW HL
AM J PHYS MED REHABIL , 2003, vol. 82, n° 11, p. 842-846 Doc n°: 110484 Localisation : Documentation IRR Descripteurs : DE82 - EXPLORATION EXAMENS BILANS - PIED The purpose of this study was to measure the forefoot varus angles in subjects with and without flexible flatfoot (FF) by using laser foot-scanning technology. Design: In the rehabilitation laboratory of a tertiary medical center, 70 subjects with FF, ranging in age from 10 to 50 yr, were recruited. The control group consisted of 30 volunteers without clinical evidence of FF. A total of 100 positive casts were obtained by having their subtalar joints kept in a neutral position. The plantar surface of the positive cast was scanned by a Yeti 3D Foot Scanner. A straight line was drawn between the first and fifth metatarsophalangeal joints. The forefoot varus angle was measured from this line in relation to the line parallel to the ground. Results: The mean forefoot varus angle was calculated to be 5.01 +/- 4.51 degrees in our FF subjects, and 1.23 +/- 1.96 degrees in the control group. Significant statistical difference in forefoot varus angle was noted between these two groups. Conclusions: The laser foot-scanning technique offers fast and accurate measurement of the forefoot varus angles. An average forefoot varus angle of approximately 5 degrees was observed in subjects with FF, which was significantly greater than the subjects without FF. Therefore, we recommend the concept of incorporating adequate forefoot posting at the medial forefoot area of an insole In treating people with FF. Langue : ANGLAIS Identifiant basis : 2003228585 |
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