Hallux interphalangeal joint range of motion in feet with and without limited first metatarsophalangeal joint dorsiflexion.
BACKGROUND
This work was designed to assess the degree of correlation between hallux interphalangeal joint and first metatarsophalangeal joint dorsiflexion and to compare the mobility of the hallux interphalangeal joint between participants with and without limited first metatarsophalangeal joint dorsiflexion (hallux limitus).


METHODS
Dorsiflexion of the hallux interphalangeal joint was measured in 60 normal feet and in 60 feet with hallux limitus to find correlations with first metatarsophalangeal joint dorsiflexion with the Spearman correlation coefficient and a simple linear regression equation. In addition, movement of the hallux interphalangeal joint was compared between normal and hallux limitus feet with the Mann-Whitney U test.


RESULTS
Significant differences were found between the groups in mean ± SD interphalangeal joint dorsiflexion (control group: 1.17° ± 2.50° ; hallux limitus group: 10.65° ± 8.24° ; P < .001). A significant inverse correlation was found between first metatarsophalangeal joint dorsiflexion and hallux interphalangeal joint dorsiflexion (ρ = -0.766, P < .001), and the regression equation from which predictions could be made is the following: hallux interphalangeal joint dorsiflexion = 27.17 - 0.381 × first metatarsophalangeal joint dorsiflexion.


CONCLUSIONS
Hallux interphalangeal joint dorsiflexion was greater in feet with hallux limitus than in normal feet. There was a strong inverse correlation between first metatarsophalangeal joint dorsiflexion and hallux interphalangeal joint dorsiflexion.
Department of Podiatry, University of Seville, Seville, Spain. pmunuera@us.es
Pedro V
PV
Munuera
Piedad
P
Trujillo
Israel
I
Güiza
D001696:Biomechanical Phenomena; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D005260:Female; D005528:Foot / Q000503:physiopathology*; D020857:Hallux Limitus / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008683:Metatarsophalangeal Joint / Q000503:physiopathology*; D016059:Range of Motion, Articular / Q000502:physiology*; D012016:Reference Values; D014033:Toe Joint / Q000503:physiopathology*