Weight Bearing Cone Beam Computed Tomography (WBCT) in the Foot and Ankle

2020 ◽  
Author(s):  
Martinus Richter ◽  
Francois Lintz ◽  
Cesar de Cesar Netto ◽  
Alexej Barg ◽  
Arne Burssens ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Weight Bearing ◽  
Cone Beam ◽  
Foot And Ankle

scholarly journals Correction to: Weight Bearing Cone Beam Computed Tomography (WBCT) in the Foot and Ankle

2020 ◽  
pp. C1-C1
Author(s):  
Martinus Richter ◽  
Francois Lintz ◽  
Cesar de Cesar Netto ◽  
Alexej Barg ◽  
Arne Burssens ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Weight Bearing ◽  
Cone Beam ◽  
Foot And Ankle

scholarly journals Weight-bearing cone-beam computed tomography in the foot and ankle specialty: where we are and where we are going - an update

2021 ◽  
Vol 54 (3) ◽  
pp. 177-184
Author(s):  
Alexandre Leme Godoy-Santos ◽  
Alessio Bernasconi ◽  
Marcelo Bordalo-Rodrigues ◽  
François Lintz ◽  
Carlos Felipe Teixeira Lôbo ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Weight Bearing ◽  
Three Dimensional ◽  
Ct Scans ◽  
Cone Beam ◽  
Foot And Ankle ◽  
Ankle Surgery ◽  
Dimensional Measurements ◽  
Three Dimensional Models

Abstract Cone-beam computed tomography (CBCT) has been applied in dentistry and medicine for nearly two decades. Its application in the foot and ankle specialty has grown exponentially in recent years. Weight-bearing CBCT allows clinicians to obtain weight-bearing images that can be viewed in all three planes and to construct three-dimensional models, similar to those constructed from traditional CT scans, as well as exposing patients to less radiation than do traditional CT scans. This technology has revolutionized diagnoses, improving the understanding of various lesions and surgical planning in the foot and ankle specialty. Ongoing studies of the use of weight-bearing CBCT in foot and ankle surgery are focused on fully automated and semi-automated three-dimensional measurements, as well as bone segmentation, mapping of the distances/orientation of the joints, and the production of customized implants. The aims of this review article are to show the evolution of this emerging tool in the foot and ankle specialty, to update those in related specialties on its use in current clinical practice, and to indicate where the research community is heading.

Weight-bearing radiographs and cone-beam computed tomography examinations in adult acquired flatfoot deformity

2020 ◽  
Author(s):  
Delaram Shakoor ◽  
Cesar de Cesar Netto ◽  
Gaurav K Thawait ◽  
Scott J Ellis ◽  
Martinus Richter ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Weight Bearing ◽  
Cone Beam ◽  
Adult Acquired Flatfoot Deformity

scholarly journals Foot Alignment in Symptomatic National Basketball Association Players Using Weightbearing Cone Beam Computed Tomography

2019 ◽  
Vol 7 (2) ◽  
pp. 232596711982608 ◽  
Author(s):  
Cesar de Cesar Netto ◽  
Alessio Bernasconi ◽  
Lauren Roberts ◽  
Pedro Augusto Pontin ◽  
Francois Lintz ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
National Basketball Association ◽  
Ankle Injuries ◽  
Cone Beam ◽  
Foot And Ankle ◽  
Hindfoot Alignment ◽  
Medial Cuneiform ◽  
The Mean ◽  
Foot Alignment

Background: Weightbearing cone beam computed tomography (WB CBCT) allows detailed 3-dimensional imaging of the foot and ankle in a weightbearing state and provides improved accuracy and reliability of foot alignment measures, especially when compared with conventional radiographic views. Purpose: To describe the foot alignment in National Basketball Association (NBA) players with different symptomatic foot and ankle injuries using WB CBCT and to determine if any predominant morphotype would be identified. Study Design: Cross-sectional study; Level of evidence, 3. Methods: A total of 45 active NBA players (mean age, 24.4 years [range, 20-34 years]; N = 54 feet [29 right, 25 left]) were assessed using WB CBCT. Measurements included the following: (1) foot and ankle offset (FAO), (2) calcaneal offset (CO), (3) hindfoot alignment angle (HAA), (4) angle between the inferior and superior facets of the talus (Inftal-Suptal), (5) angle between the inferior facet of the talus and the horizontal floor line (Inftal-Hor), (6) forefoot arch angle (FAA), (7) navicular-to-floor distance, and (8) medial cuneiform–to-floor distance. Measurements were then compared with values available in the literature for a “normal” foot morphotype. Results: Among the 54 feet, the mean FAO was 0.48% (95% CI, –0.25% to 1.21%), the mean CO was 1.18 mm (95% CI, –0.50 to 2.87 mm), and the mean HAA was 1.42° (95% CI, –0.80° to 3.65°). The mean Inftal-Suptal angle was 5.31° (95% CI, 3.50°-7.12°), while the mean Inftal-Hor angle was 4.04° (95% CI, 2.56°-5.51°). The mean FAA was 15.84° (95% CI, 14.73°-16.92°), the mean navicular-to-floor distance was 38.30 mm (95% CI, 36.19-40.42 mm), and the mean medial cuneiform–to-floor distance was 26.79 mm (95% CI, 25.30-28.28 mm). None of these values were found to be significantly different when comparing forwards, guards, and centers. Conclusion: NBA players presenting with symptomatic foot and ankle injuries had a fairly “normal” foot morphology, with a tendency toward a varus hindfoot and a high-arched morphotype. No significant differences were found between players based on their position on the court. WB CBCT may help to shed light on anatomic risk factors for common injuries in professional players and may aid in the planning of specific prevention programs.

Cone Beam CT equipment compared: PedCat, Planmed CT and CARESTREAM OnSight 3D Extremity System

2020 ◽  
Author(s):  
Sandu Elena Cerasela ◽  
Caravaggi Paolo ◽  
Durante Stefano
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Cone Beam Computed Tomography ◽  
Low Dose ◽  
3D Visualization ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Foot And Ankle ◽  
Advantages And Disadvantages ◽  
Volumetric Images

The purpose of this article is to compare three Cone Beam CT equipment used for 3D visualization of the foot and ankle, highlighting the advantages and disadvantages of each machine. Cone Beam Computed Tomography provides high resolution (3D) volumetric images with a particularly low dose.

Relationship Between Chronic Lateral Ankle Instability and Hindfoot Varus Using Weight-Bearing Cone Beam Computed Tomography

2019 ◽  
Vol 40 (10) ◽  
pp. 1175-1181 ◽  
Author(s):  
François Lintz ◽  
Alessio Bernasconi ◽  
Louise Baschet ◽  
Céline Fernando ◽  
Nazim Mehdi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Ankle Instability ◽  
Weight Bearing ◽  
Univariate Analysis ◽  
Cone Beam ◽  
Hindfoot Alignment ◽  
Lateral Ankle ◽  
Chronic Lateral Ankle Instability ◽  
Lateral Ankle Instability

Background: Varus hindfoot deformity may increase the risk of chronic lateral ankle instability (CLAI). Our aim was to analyze hindfoot alignment (HFA) in patients with CLAI using weight-bearing cone beam computed tomography (WBCT) to assess this risk. Methods: This retrospective, comparative analysis was carried out using an existing WBCT database (Talas, CurveBeam LLC), including data sets for 370 consecutive feet (189 patients) obtained between July 2016 and October 2018 at a single institution. The software provided semiautomated measurement of HFA, given as foot ankle offset (FAO). Univariate analysis was conducted to compare feet with and without CLAI against sex, age, body mass index, and FAO. Significant variables were included in a multivariable logistic model with random effects to take into account correlation between feet of the same patient. Results: Forty-three feet had CLAI (34 patients). FAO ( P = .0009) was significant for CLAI by univariate analysis. Mean FAO was −2.2% ± 5.5% (varus) and + 2.6% ± 4.7% (valgus) with and without CLAI history, respectively. Multivariable logistic regression adjusted for sex and age demonstrated a 35% increased odds ratio (OR) of CLAI per 1% reduction in FAO value (varus) (adjusted OR=0.64, 95% confidence interval [CI]: 0.49-0.84; P = .001) and no significant effect of sex (adjusted OR=0.52; P = .617) or age (adjusted OR=0.94; P = .165) after adjustment for FAO. Conclusion: A positive relationship was found between varus HFA and the risk to have CLAI. Systematic recording of FAO measurements from WBCT images along with clinical data regarding CLAI history proved successful at quantifying the risk of CLAI. Level of Evidence: Level III, retrospective cohort study.

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