Influence of lower limb rotation on hindfoot alignment using a conventional two-dimensional radiographic technique

Baverel, L.; Brilhault, J.; Odri, G.; Boissard, M.; Lintz, François

doi:10.1016/j.fas.2016.02.003

Cited by 66 publications

(44 citation statements)

References 26 publications

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“…To really assess reliability, the radiographs would therefore have to be repeated on each patient, which would be ethically difficult to explain. This was done in a previous study using a cadaveric setup 3 where a 30-degree difference in rotation of the foot could result in a 50% difference in HFA value. So repeatability truly lies in the radiographic setting.…”

Section: Discussionmentioning

confidence: 99%

“…With respect to HFA, there is no Gold Standard or "true" measurement. 3,6,22 Rotation and other potential bias influence the value of HFA measurements. 3 However, in most studies, reliability is assessed using intra and interobserver reliability carried out on the same radiograph for each patient.…”

Section: Discussionmentioning

confidence: 99%

“…3,6,22 Rotation and other potential bias influence the value of HFA measurements. 3 However, in most studies, reliability is assessed using intra and interobserver reliability carried out on the same radiograph for each patient. So it is logical that the same observer (intra observer), or 2 observers (inter observer), given the same instructions, would find the same value.…”

Section: Discussionmentioning

confidence: 99%

“…7,[27][28][29]41 HFA measures based on 2D radiographs are flawed by many anatomical and operator-related bias, which have been extensively investigated in the literature. * These include projection and rotational issues, 3,22 mostly with regards to the use of the tibia as a reference axis. 6 Previous studies on the HFA have focused on which technique to use and measurement methods.…”

Section: Introductionmentioning

confidence: 99%

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3D Biometrics for Hindfoot Alignment Using Weightbearing CT

Lintz

Welck

Bernasconi³

et al. 2017

Foot Ankle Int.

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135

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Background: Hindfoot alignment on 2D radiographs can present anatomical and operator-related bias. In this study, software designed for weightbearing computed tomography (WBCT) was used to calculate a new 3D biometric tool: the Foot and Ankle Offset (FAO). We described the distribution of FAO in a series of data sets from clinically normal, varus, and valgus cases, hypothesizing that FAO values would be significantly different in the 3 groups. Methods: In this retrospective cohort study, 135 data sets (57 normal, 38 varus, 40 valgus) from WBCT (PedCAT; CurveBeam LLC, Warrington, PA) were obtained from a specialized foot and ankle unit. 3D coordinates of specific anatomical landmarks (weightbearing points of the calcaneus, of the first and fifth metatarsal heads and the highest and centermost point on the talar dome) were collected. These data were processed with the TALAS system (CurveBeam), which resulted in an FAO value for each case. Intraobserver and interobserver reliability were also assessed. Results: In normal cases, the mean value for FAO was 2.3% ± 2.9%, whereas in varus and valgus cases, the mean was −11.6% ± 6.9% and 11.4% ± 5.7%, respectively, with a statistically significant difference among groups (P < .001). The distribution of the normal population was Gaussian. The inter-and intraobserver reliability were 0.99 +/-0.00 and 0.97 +/-0.02 Conclusions: This pilot study suggests that the FAO is an efficient tool for measuring hindfoot alignment using WBCT. Previously published research in this field has looked at WBCT by adapting 2D biometrics. The present study introduces the concept of 3D biometrics and describes an efficient, semiautomatic tool for measuring hindfoot alignment. Level of Evidence: Level III, retrospective comparative study.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

3D Biometrics for Hindfoot Alignment Using Weightbearing CT

Lintz

Welck

Bernasconi³

et al. 2017

Foot Ankle Int.

Self Cite

135

162

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“…Of note, we found that in clinical assessment they still used non-validated scores (for children) and radiographic parameters not always related to the ‘pathological’ flatfoot and, additionally, often affected by some bias. 72 …”

Section: Our Overview Of the Last Five Yearsmentioning

confidence: 99%

The role of arthroereisis of the subtalar joint for flatfoot in children and adults

2017

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Subtalar arthroereisis has been reported as a minimally-invasive, effective and low-risk procedure in the treatment of flatfoot mainly in children but also in adults.It has been described as a standalone or adjunctive procedure, and is indicated in the treatment of flexible flatfoot, tibialis posterior tendon dysfunction, tarsal coalition and accessory navicular syndrome.Different devices for subtalar arthroereisis are currently used throughout the world associated with soft-tissue and bone procedures, depending on the surgeon rather than on standardised or validated protocols.Sinus tarsi pain is the most frequent complication, often requiring removal of the implant.To date, poor-quality evidence is available in the literature (Level IV and V), with only one comparative non-randomised study (Level II) not providing strong recommendations. Long-term outcome and complication rates (especially the onset of osteoarthritis) are still unclear.Cite this article: EFORT Open Rev 2017;2:438–446. DOI: 10.1302/2058-5241.2.170009

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Hindfoot Alignment of Adult-Acquired Flatfoot Deformity: A Comparison of Clinical Assessment and Weight Bearing Cone Beam CT Examinations

de Cesar Netto

2019

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

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Influence of lower limb rotation on hindfoot alignment using a conventional two-dimensional radiographic technique

Cited by 66 publications

References 26 publications

3D Biometrics for Hindfoot Alignment Using Weightbearing CT

3D Biometrics for Hindfoot Alignment Using Weightbearing CT

The role of arthroereisis of the subtalar joint for flatfoot in children and adults

Hindfoot Alignment of Adult-Acquired Flatfoot Deformity: A Comparison of Clinical Assessment and Weight Bearing Cone Beam CT Examinations

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