Comparison between Weightbearing-CT semiautomatic and manual measurements in Hallux Valgus

Carvalho, Kepler Alencar Mendes de; Walt, Jennifer S.; Ehret, Amanda; Tazegul, Tutku; Dibbern, Kevin; Mansur, Nacime Salomão Barbachan; Lalevée, Matthieu

doi:10.1016/j.fas.2022.02.014

Cited by 26 publications

(32 citation statements)

References 38 publications

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“…The talonavicular coverage angle (TNCA) was obtained using the segmentation and the automatic angle tool based on two-dimensional (2D) projections of 3D axes 24 . Finally, a repeatability study was performed to quantify variability in articular selections on the calcaneus and talar head.…”

Section: Methodsmentioning

confidence: 99%

Coverage maps demonstrate 3D Chopart joint subluxation in weightbearing CT of progressive collapsing foot deformity

Behrens

Baumfeld

Lalevée

et al. 2022

Sci Rep

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A key element of the peritalar subluxation (PTS) seen in progressive collapsing foot deformity (PCFD) occurs through the transverse tarsal joint complex. However, the normal and pathological relations of these joints are not well understood. The objective of this study to compare Chopart articular coverages between PCFD patients and controls using weight-bearing computed tomography (WBCT). In this retrospective case control study, 20 patients with PCFD and 20 matched controls were evaluated. Distance and coverage mapping techniques were used to evaluate the talonavicular and calcaneocuboid interfaces. Principal axes were used to divide the talar head into 6 regions (medial/central/lateral and plantar/dorsal) and the calcaneocuboid interface into 4 regions. Repeated selections were performed to evaluate reliability of joint interface identification. Surface selections had high reliability with an ICC > 0.99. Talar head coverage decreases in plantarmedial and dorsalmedial (− 79%, p = 0.003 and − 77%, p = 0.00004) regions were seen with corresponding increases in plantarlateral and dorsolateral regions (30%, p = 0.0003 and 21%, p = 0.002) in PCFD. Calcaneocuboid coverage decreased in plantar and medial regions (− 12%, p = 0.006 and − 9%, p = 0.037) and increased in the lateral region (13%, p = 0.002). Significant subluxation occurs across the medial regions of the talar head and the plantar medial regions of the calcaneocuboid joint. Coverage and distance mapping provide a baseline for understanding Chopart joint changes in PCFD under full weightbearing conditions.

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Section: Methodsmentioning

confidence: 99%

Coverage maps demonstrate 3D Chopart joint subluxation in weightbearing CT of progressive collapsing foot deformity

Behrens

Baumfeld

Lalevée

et al. 2022

Sci Rep

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“…The longitudinal axis was automatically generated for the metatarsal and phalanx model of each patient, finding the bone center in the proximal to distal orientation and its cross sections at different points. 4 After that, the software automatically registered a mathematical model of the foot and ankle on the image and computed the location of measurement landmarks and longitudinal axes of bones of interest (Figure 2B). 4…”

Section: Ct Imaging and Measurementmentioning

confidence: 99%

“…4 After that, the software automatically registered a mathematical model of the foot and ankle on the image and computed the location of measurement landmarks and longitudinal axes of bones of interest (Figure 2B). 4…”

Section: Ct Imaging and Measurementmentioning

confidence: 99%

“…CubeVue software (CurveBeam, LLC, USA) was used to evaluate the images, which were transformed from raw multiplanar nameless data into sagittal, coronal, and axial plane images. 4…”

Section: Ct Imaging and Measurementmentioning

confidence: 99%

“…5,8,10 Along those same lines, an advanced bone segmentation system that performs actions of semiautomatic bone segmentation allows for more accurate measurements of the forefoot. 4 The number of WBCT studies evaluating semiautomatic foot and ankle measurements has grown in the last 2 years. It has revealed that WBCT computerbased semiautomatic imaging measures are repeatable and express good agreement and consistency, showing us that this new technology can be an essential tool in the daily practice of foot and ankle orthopaedic surgery.…”

Section: Introductionmentioning

confidence: 99%

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The Use of Advanced Semiautomated Bone Segmentation in Hallux Rigidus

Carvalho

Mallavarapu

Ehret

et al. 2022

Foot & Ankle Orthopaedics

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Background: Weightbearing computed tomography (WBCT) measurements allow evaluation of several anatomical points for a correct clinical-radiographic diagnosis of pathologies, such as hallux rigidus (HR). In addition, a new semiautomatic segmentation software obtains automated 3D measurements from WBCT scan data sets, minimizing errors in reading angular measurements. The study’s objective was (1) to evaluate the reliability of WBCT semiautomatic imaging measures in HR, (2) to evaluate correlation and agreement between manual and semiautomatic measures in the setting of HR, and (3) to compare semiautomatic measurements between pathologic (HR) and standard control groups. Methods: A retrospective study of HR patients was performed including 20 feet with HR. WBCT manual and semiautomatic 3D measurements were performed using the following parameters: (1) first metatarsal-proximal phalanx angle (1stMPP), (2) hallux valgus angle (HVA), (3) first to second intermetatarsal angle (IMA), (4) hallux interphalangeal angle (IPA), (5) first metatarsal length (1stML), (6) second metatarsal length (2ndML), (7) first metatarsal declination angle (1stMD), (8) second metatarsal declination angles (2ndMD), and (9) metatarsus primus elevatus (MPE). The differences between pathologic and control cases were assessed with a Wilcoxon test. Results: Interobserver and intraobserver agreement for manual vs semiautomatic WBCT measurements demonstrated excellent reliability. According to the Pearson coefficient, there was a strong positive linear correlation between both methods for the following parameters evaluated: HVA (ρ = 0.96), IMA (ρ = 0.86), IPA (ρ = 0.89), 1stML (ρ = 0.96), 2ndML (ρ = 0.91), 1stMD (ρ = 0.86), 2ndMD (ρ = 0.95), and MPE (ρ = 0.87). Comparison between the pathologic group with HR and the control (standard) group allowed for the differentiating of the pathologic (HR) from the non-pathologic conditions for MPE (p < 0.05). Conclusion: Semiautomatic measurements are reproducible and comparable to measurements performed manually, showing excellent interobserver and intraobserver agreement. The software used differentiated pathologic from nonpathologic conditions when submitted to semiautomatic MPE measurements. Level of Evidence: Level III, retrospective comparative study.

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Enhancing precision in osteochondral lesions of the talus measurements and improving agreement in surgical decision‐making using weight‐bearing computed tomography and distance mapping

Efrima,

Dahmen,

Barbero

et al. 2024

Knee surg. sports traumatol. arthrosc.

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PurposeWeight‐bearing computed tomography (WBCT) enables the creation of a three‐dimensional (3D) model that represents the ankle morphology in a standing position. Distance mapping (DM) is a complementary feature that uses color coding to represent the relative intraarticular distance and can be used to outline intraarticular defects. Consequently, DM offers a novel approach to delineating osteochondral lesions of the talus (OLT), allowing for the quantification of its surface, volume and depth. The reliability of DM for OLT measurements has yet to be thoroughly evaluated. This study primarily aims to determine the reliability of DM in measuring the surface, depth and volume of OLT. A secondary objective is to ascertain whether measurements obtained through DM, when integrated with a predefined treatment algorithm, can facilitate consensus among surgeons regarding the optimal surgical intervention.MethodsThis cohort comprised 36 patients with 40 OLTs evaluated using WBCT and DM. Two raters used DM to determine the lesion boundary (LB) and lesion fundus (LF) and calculate the lesion depth, surface and volume. The raters were asked to choose between bone marrow stimulation, autologous matrix‐induced chondrogenesis and osteochondral transposition based on the measurement. Inter‐rater and intra‐rater agreement was measured.ResultsInterclass correlation of the lesion's depth surface produced an excellent inter‐rater and intra‐rater agreement of 0.90–0.94 p < 0.001. Cohen's κ agreement analysis of the preferable preoperative plan produced a κ = 0.834, p < 0.001, indicating a near‐perfect agreement.ConclusionWBCT‐based 3D modules and DM can be used to measure the lesion's surface, depth and volume with excellent inter‐rater and inter‐rater agreement; using this measurement and a predetermined treatment algorithm, a near‐perfect inter‐rater agreement for the preoperative planning was reached. WBCT in conjunction with AI capabilities could help determine the type of surgery needed preoperatively, evaluate the hindfoot alignment and assess if additional surgeries are needed.Level of EvidenceLevel III.

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Comparison between Weightbearing-CT semiautomatic and manual measurements in Hallux Valgus

Cited by 26 publications

References 38 publications

Coverage maps demonstrate 3D Chopart joint subluxation in weightbearing CT of progressive collapsing foot deformity

Coverage maps demonstrate 3D Chopart joint subluxation in weightbearing CT of progressive collapsing foot deformity

The Use of Advanced Semiautomated Bone Segmentation in Hallux Rigidus

Enhancing precision in osteochondral lesions of the talus measurements and improving agreement in surgical decision‐making using weight‐bearing computed tomography and distance mapping

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