Journal article
Correlation between indirect radiographic parameters of first metatarsal rotation in hallux valgus and values on weight-bearing computed tomography
International orthopaedics, Vol.45(12), pp.3111-3118
12/01/2021
DOI: 10.1007/s00264-021-05136-9
PMID: 34383104
Abstract
Purpose To verify if indirect radiographic signs of first metatarsal pronation, determined by the head round sign, correspond to weight-bearing computed tomography (WBCT) measurements. Methods In this case-control retrospective study, we analyzed 26 hallux valgus (HV) feet and 20 controls through conventional radiograph (CR) and WBCT images. Two blinded orthopaedic foot and ankle surgeons performed the measurements. Pronation classification (head roundness), head diameter (HD), traditional HV angles, arthritis, sesamoid positioning, and first metatarsal rotation angle (MRA) (alpha angle) were evaluated. Comparisons were performed by Student's T-test and a multivariate regression was executed. P-values less than 0.05 were considered significant. Results Mean values were higher in HV patients than controls when evaluating MRA (11.51 [9.42-13.60] to 4.23 [1.84-6.62], 95%CI), HD (22.35 [21.52-23.18] to 21.01 [20.07-21.96]), and sesamoid rotation angle (SRA) (26.72 [24.09-29.34] to 4.56 [1.63-7.50]). The MRA had a low influence in head roundness classification (R-2: 0.15). Changes in the pronation classification were explained chiefly by the sesamoid station (SS) (R-2: 0.37), where stations 4 to 7 were found to be strong predictors of roundness classifications 2 and 3. Conclusion Indirect signs of metatarsal pronation, determined by the head round sign, correlate weakly with the alpha angle measured in WBCT. The presence of arthritis and sesamoids displacement might modify the perception of first head roundness. The influence of MRA in the classification was low, where SS from 4 to 7 was strong predictors of a higher pronation classification.
Details
- Title: Subtitle
- Correlation between indirect radiographic parameters of first metatarsal rotation in hallux valgus and values on weight-bearing computed tomography
- Creators
- Nacime Salomao Barbachan Mansur - Univ Iowa UIOWA, Carver Coll Med, Dept Orthoped & Rehabil, 200 Hawkins Dr,John PappaJohn Pavill JPP, Iowa City, IA 52242 USAMatthieu Lalevee - Roy J. and Lucille A. Carver College of MedicineEli Schmidt - Roy J. and Lucille A. Carver College of MedicineKevin Dibbern - Univ Iowa UIOWA, Carver Coll Med, Dept Orthoped & Rehabil, 200 Hawkins Dr,John PappaJohn Pavill JPP, Iowa City, IA 52242 USAPablo Wagner - Clínica AlemanaEmilio Wagner - Clínica AlemanaCaio Augusto de Souza Nery - Univ Fed Sao Paulo, Dept Orthoped & Traumatol, Escola Paulista Med, Sao Paulo, BrazilCesar de Cesar Netto - Univ Iowa UIOWA, Carver Coll Med, Dept Orthoped & Rehabil, 200 Hawkins Dr,John PappaJohn Pavill JPP, Iowa City, IA 52242 USA
- Resource Type
- Journal article
- Publication Details
- International orthopaedics, Vol.45(12), pp.3111-3118
- Publisher
- Springer Nature
- DOI
- 10.1007/s00264-021-05136-9
- PMID
- 34383104
- ISSN
- 0341-2695
- eISSN
- 1432-5195
- Number of pages
- 8
- Language
- English
- Date published
- 12/01/2021
- Academic Unit
- Orthopedics and Rehabilitation
- Record Identifier
- 9984303963402771
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