Side-to-Side Difference of Metatarsal Rotation in Normal Individuals.
Foot Ankle Int
; 43(6): 790-795, 2022 06.
Article
em En
| MEDLINE
| ID: mdl-35357250
ABSTRACT
BACKGROUND:
A previous study defined the normal first metatarsal pronation angle (MPA) as <16 degrees and normal α angle as <18 degrees. The primary purpose of this study was to assess the side-to-side variation in first metatarsal pronation between feet in normal individuals.METHODS:
MPA and α angles were measured on standardized coronal weightbearing computed tomography slices. Pairedt tests were used to test significance of mean side-to-side differences in a population of 63 normal, asymptomatic individuals.RESULTS:
The mean side-to-side difference in first metatarsal pronation was 4.3 degrees (95% CI 3.3, 5.2 degrees) for MPA and 4.9 degrees (95% CI 3.8, 6.0 degrees) for α angle. The normative range for side-to-side difference was calculated as 12 degrees for MPA and 14 degrees for α angle, as defined by 2 SDs from the mean.CONCLUSION:
In a cohort of normal patients, the mean difference in first metatarsal pronation between sides was approximately 4 to 5 degrees based on MPA and α angle. However, considerable variation in differences was observed. These findings may be considered when assessing first metatarsal pronation using population-based values as it may influence thresholds for identifying pathology in an individual.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Rotação
/
Ossos do Metatarso
/
Pronação
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Foot Ankle Int
Assunto da revista:
ORTOPEDIA
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Reino Unido