Journal article
Three-Dimensional Biometrics to Correlate Hindfoot and Knee Coronal Alignments Using Modern Weightbearing Imaging
Foot & ankle international, Vol.41(11), pp.1411-1418
11/01/2020
DOI: 10.1177/1071100720938333
PMID: 32698631
Abstract
Background: Previous studies focusing on the effects of knee surgery on hindfoot alignment have suggested some degree of compensation between the knee and the hindfoot. However, these studies did not investigate a preoperative relationship in patients without end-stage knee osteoarthritis using 3-dimensional (3D) biometrics. The purpose of this study was to investigate the relationship between knee and hindfoot alignment using 3D weightbearing imaging. Methods: This retrospective comparative study included 95 lower limbs with weightbearing computed tomography and low-dose biplanar radiograph investigations. Cases with a history that may have caused a change in lower limb alignment were excluded. Hindfoot and knee alignments were measured using foot ankle offset (FAO) and hip-knee-ankle (HKA) angle, respectively. Patients were separated into 3 groups according to the knee deformity to investigate the distribution of FAO in each group. Results: The mean (SD) FAO was 2% (7%) for the knee varus group, 1% (6%) for the neutral knee group, and 4% (5%) for the valgus knee group (P= .12). Fifty-three percent of patients with knee valgus showed a pathological hindfoot valgus (P= .04). We found a positive but moderate correlation between hindfoot valgus and HKA (rho = 0.53;P= .01). Female sex was associated with higher FAO (3% +/- 4% vs 0.6% +/- 6%;P= .009). Conclusion: This feasibility study suggests a new opportunity using 3D biometrics to understand the relationship between knee and hindfoot alignment and to highlight different patterns of combined deformities in further investigations.
Details
- Title: Subtitle
- Three-Dimensional Biometrics to Correlate Hindfoot and Knee Coronal Alignments Using Modern Weightbearing Imaging
- Creators
- Louis Dagneaux - University of MontpellierMaryama Dufrenot - Aix-Marseille UniversityAlessio Bernasconi - University of Naples Federico IINicholas A. Bedard - University of IowaCesar de Cesar Netto - Hospital for Special SurgeryFrancois Lintz - Department of Foot and Ankle Surgery, Union Private Hospital, Saint Jean, Toulouse, France.
- Resource Type
- Journal article
- Publication Details
- Foot & ankle international, Vol.41(11), pp.1411-1418
- Publisher
- Sage
- DOI
- 10.1177/1071100720938333
- PMID
- 32698631
- ISSN
- 1071-1007
- eISSN
- 1944-7876
- Number of pages
- 8
- Grant note
- Curvebeam Newclip Technics
- Language
- English
- Date published
- 11/01/2020
- Academic Unit
- Orthopedics and Rehabilitation
- Record Identifier
- 9984304704202771
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