Three-dimensional orientation of the femoral curvature. How well does it match with the sagittal curvature of femoral implants?

Schmitt, Antoine; Letissier, Hoël; Poltaretskyi, Sergii; Babusiaux, Damien; Rosset, Philippe; Nail, Louis-Romée Le

doi:10.1016/j.otsr.2018.09.018

Cited by 7 publications

(9 citation statements)

References 18 publications

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“…Several attempts have been made to determine the curvature of the femur from 3D images (Abdelaal et al, 2016; Akamatsu et al, 2016; Karakaş & Harma, 2008; Lu et al, 2012; Mochizuki et al, 2017; Schmitt et al, 2019). In these, the "center point" of the femoral cross‐section was the basis for determining the curvature.…”

Section: Discussionmentioning

confidence: 99%

“…However, the methods for determining the center point were not always explicitly described, and some were determined by hand, so reproducibility remains an issue. Some studies considered the curve connecting the entirety or part of the centerline of the femur as part of the circumference and an indicator of its radius (Karakaş & Harma, 2008; Lu et al, 2012; Schmitt et al, 2019). However, since the results of the present study have shown that the curvature of the femoral shaft is not simple, it is not appropriate to consider the femoral curvature as part of a single circumference in this way.…”

Section: Discussionmentioning

confidence: 99%

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Morphological divergence in the curvature of human femoral diaphyses: Tracing the central mass distributions of cross‐sections

et al. 2021

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The diaphysis of the human femoral bone has a physiological anterior curvature; additionally, there is a curvature to the medial side or lateral side. In addition to compression stress from gravity during standing, walking, and running, these bones are continuously exposed to complex stresses from the traction forces of the various strong muscles attached to them. The femoral diaphysis is subjected to these mechanical stresses, and the direction and size of its curvature are defined according to Wolff's law and the mechanostat theory of Frost. The purpose of this study was to quantitatively evaluate the curvature of the femoral diaphysis in Japanese skeletons by determining the curve connecting the central mass distributions (CMD) of cross‐sectional images. A total of 90 right femora (46 males and 44 females) were randomly selected from modern Japanese skeletal specimens. Full‐length images of these bones were acquired using a clinical computed tomography scanner. The range between the lower end of the lesser trochanter and the adductor tubercle of each femur was divided at regular intervals to obtain ten planes, and nine levels were analyzed. The CMD curve was determined by connecting the CMDs of each of the nine cross‐sections. First, the CMD of a cross‐section in each of the nine slices was calculated, and the nine trajectories were superimposed from above. Then, by converting the shape of the entire CMD curve to superimpose the coordinates of the endpoint on the starting point, a closed arc representing the curvature of the femur was determined. For both males and females, the patterns varied from mostly medial to largely lateral curvature. The size of the curvature also varied for individuals. By analyzing only the coordinates of the vertex of the CMD curve of each femoral bone, the outlines of the diaphyseal curvatures could be recognized. The femora were thereby divided into two groups: medial bending and lateral bending. Considering males and females together, the number in the lateral‐curvature group (n = 51) was larger than that in the medial‐curvature group (n = 39). Moreover, the average age of the lateral‐curvature group was significantly higher than that of the medial‐curvature group (p < 0.05). In males, with an increase in the cortical bone proportion of the cross‐sectional area, the anterior vertex of diaphyseal bending tended to be more prominent. This cortical proportion was significantly higher in the medial‐curvature groups than in the lateral‐curvature group (p < 0.01). The phenomena observed in this study may be related to pathophysiologies such as atypical fractures of the femur and osteoarthritis of the knee joints.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Morphological divergence in the curvature of human femoral diaphyses: Tracing the central mass distributions of cross‐sections

et al. 2021

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“…In our study, we preferred to use some of these predefined landmarks and measurement methods on 3D anatomical models [3,5,6,12]. Despite several methods were identified in the literature for the determination of the femoral neck center, there is no common consensus about the ideal determining method [2,5,11,14]. The femoral neck has a conic shaped missing its top part virtually, although the real femoral neck borders are not known certainly.…”

Section: Discussionmentioning

confidence: 99%

“…In some of these studies, the femoral markings and measurements were performed using 2D methods [3,4], while in a limited number of studies all the femoral markings and measurements 1 were performed on 3D models [1,[8][9][10]. Despite these publications, the complex 3D anatomy of the femur is still not fully defined [11]. 3D anatomical models are not affected by the patient's position in tomography device and the anatomical landmarks could be more easily identified with manual or autonomous methods [2,9].…”

Section: Introductionmentioning

confidence: 99%

“…3D anatomical models are not affected by the patient's position in tomography device and the anatomical landmarks could be more easily identified with manual or autonomous methods [2,9]. Therefore, recent studies have emphasized the superiority of 3D evaluation to eliminate the difficulties in understanding the complex femoral anatomy [2,9,11].…”

Section: Introductionmentioning

confidence: 99%

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Determination of the Gender-Related Differences on Native Femoral Anatomy Using Three-Dimensional Computerized Tomography Models in Caucasian Population

Tanoğlu¹

2021

Cureus

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IntroductionThree-dimensional (3D) modelling, which has an increasing interest in the literature, could help surgeons to better understand the lesions by visualizing the real anatomical features compared to plain radiographs and two-dimensional (2D) tomography images. We aimed to evaluate the native femoral anatomical features of Turkish females and males using 3D computed tomography models. MethodsWe evaluated the right femoral anatomical features of 60 females and 60 males between 31 and 65 years of age creating 3D computerized tomography models. The gender-specific differences of femoral neck inclination and anteversion, femoral mechanical-anatomical axis, anatomical and mechanical lateral distal femoral, medial and lateral proximal femoral angles were measured on 3D femoral anatomical models. ResultsThe mean age of our study groups was 50.6 ± 8.5. We determined a statistically significant difference between gender groups in terms of mean femoral neck anteversion angles (p = 0.009). We observed the retroversion of the femoral neck in 12 adults (10%). The mean values of femoral neck inclination, femoral mechanical -anatomical angle, anatomical and mechanical lateral distal femoral angles, medial and lateral proximal femoral angles did not differ any statistical significance between gender groups. ConclusionAlthough the anatomical angle measurements except femoral neck anteversion, did not differ significantly between gender groups of our study, there were differences between mean anatomical angles when compared to other studies in the literature, which investigate the different races or Caucasian population. Through 3D anatomical data, more compatible implants, prosthesis or biomaterials can be produced by determining gender and race-specific anatomical differences.

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Fully hydroxyapatite-coated distal locking cementless femoral modular implant for revision total hip arthroplasty: A retrospective study of 94 Renaissance™ stems at a minimum 10 years’ follow-up

Slomka

Druon

Rosset

et al. 2022

Orthopaedics & Traumatology: Surgery & Research

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Three-dimensional orientation of the femoral curvature. How well does it match with the sagittal curvature of femoral implants?

Cited by 7 publications

References 18 publications

Morphological divergence in the curvature of human femoral diaphyses: Tracing the central mass distributions of cross‐sections

Morphological divergence in the curvature of human femoral diaphyses: Tracing the central mass distributions of cross‐sections

Determination of the Gender-Related Differences on Native Femoral Anatomy Using Three-Dimensional Computerized Tomography Models in Caucasian Population

Fully hydroxyapatite-coated distal locking cementless femoral modular implant for revision total hip arthroplasty: A retrospective study of 94 Renaissance™ stems at a minimum 10 years’ follow-up

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