Medial longitudinal arch deformation during walking and stair navigation while carrying loads.
Foot Ankle Int
; 32(6): 623-9, 2011 Jun.
Article
em En
| MEDLINE
| ID: mdl-21733426
ABSTRACT
BACKGROUND:
Understanding the biomechanics of the medial longitudinal arch (MLA) may provide insights into injury risk and prevention, as well as function of the arch-supporting structures. Our understanding of MLA deformation is currently limited to sit-to-stand, walking, and running. MATERIAL ANDMETHODS:
Three-dimensional deformation of the MLA of the right foot was characterized in 17 healthy participants during several simulated activities of daily living. MLA deformation was quantified by both changes in arch length and navicular displacement during the stance phase of three motions walking, stair ascent, and stair descent. Three levels of load were also evaluated no load, a front load (13.6 kg), and a backpack load (13.6 kg). Force platforms and an eight-camera motion capture system were used to collect relevant lower extremity kinetic and kinematic data.RESULTS:
Motion type had a significant (p < 0.05) effect on navicular displacement and arch length elongation with navicular displacement being greatest during stair descent, while the walking and stair descent conditions showed the greatest increase in arch length. External load did not significantly affect either of these two measures (p > 0.05).CONCLUSION:
Differences in the MLA deformation variables resulting from varied dynamic activities of daily living can be greater than those during walking and should be considered. CLINICAL RELEVANCE Detailing the mechanics of the MLA may aid in further understanding injuries associated with the MLA, and the results of the current study indicate that these mechanics change based on activity.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Caminhada
/
Pé
/
Movimento
Tipo de estudo:
Clinical_trials
/
Risk_factors_studies
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Foot Ankle Int
Ano de publicação:
2011
Tipo de documento:
Article