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Plantar pressure characteristics in hallux valgus feet
Author(s) -
Koller Ulrich,
Willegger Madeleine,
Windhager Reinhard,
Wanivenhaus Axel,
Trnka HansJoerg,
Schuh Reinhard
Publication year - 2014
Publication title -
journal of orthopaedic research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.041
H-Index - 155
eISSN - 1554-527X
pISSN - 0736-0266
DOI - 10.1002/jor.22707
Subject(s) - valgus , plantar pressure , first metatarsal , foot pressure , foot (prosody) , orthodontics , physical medicine and rehabilitation , medicine , engineering , art , mechanical engineering , pressure sensor , literature
Due to the pathoanatomical changes in hallux valgus feet, the plantar flexion moment of the first metatarsophalangeal joint is reduced. Therefore, load bearing of the hallux is decreased during push‐off. We assessed loading parameters in hallux valgus feet. Based on dorsal‐plantar weight bearing radiographs of 61 feet, the intermetatarsal‐, hallux valgus‐, distal metatarsal articulation‐angle, and sesamoid position were evaluated. Plantar pressure assessment was performed with the emed® system during level walking. We found negative correlations between hallux valgus angle and peak pressure in the great toe ( r = −0.301, p < 0.023), the maximum force of the hallux ( r = −0.481, p < 0.001), and contact time of the great toe ( r = −0.448, p < 0.001), and positive correlations for force time integral ( r = 0.348, p < 0.001), contact area ( r = 0.307, p < 0.020), maximum force ( r = 0.430, p < 0.001), and peak pressure ( r = 0.361, p < 0.006) of the fifth metatarsal head. A positive correlation between the sesamoid and the metatarsal subluxation regarding maximum force ( r = 0.294, p < 0.034), and a negative correlation between the contact area of the hallux ( r = −0.232, p < 0.020) was shown. Depending on the severity, hallux valgus angle, and sesamoid subluxation, load shows significant lateral transmission in hallux valgus feet. © 2014 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 32:1688–1693, 2014.