A cadaveric study of radial and ulnar bowing in the sagittal and coronal planes

Weber, Morgan B.; Olgun, Z. Deniz; Boden, Kaeleen A.; Weinberg, Douglas S.; Bafus, Blaine T.; Cooperman, Daniel R.; Liu, Raymond W.

doi:10.1016/j.jse.2019.10.016

Cited by 12 publications

(18 citation statements)

References 27 publications

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“…We found an average ratio of the PUDA apex to the total ulnar length of 23.2% which is comparable to the CT-analysis from Yong et al (26.4%) [5]. Two recent studies investigated the anterior-posterior and lateral bow of the ulna bone and published slightly different results compared to the existing literature [26,27]. Especially the location of the ulna bows were described to be more distally than presumed previously [26,27].…”

Section: Plos Onesupporting

confidence: 73%

“…Two recent studies investigated the anterior-posterior and lateral bow of the ulna bone and published slightly different results compared to the existing literature [26,27]. Especially the location of the ulna bows were described to be more distally than presumed previously [26,27]. It must be noted, that the comparison between different studies are impeded because of the different measurement methods.…”

Section: Plos Onementioning

confidence: 93%

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Computer tomographic analysis of anatomic characteristics of the ulna – essential parameters for preshaped implants

et al. 2020

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Anatomically preshaped implants are needed for exact restoration of the anatomy after fractures of the proximal ulna and ulnar shaft, which enables a good functional outcome. Aim of this computed tomographic analysis was to identify specific characteristics of the ulna. The data serve for the development of a new intramedullary implant for stabilisation of proximal and diaphyseal ulna fractures. Methods With a standardized research method 100 CT scans of the ulna were evaluated regarding anatomic parameters like width of the medullary canal, proximal ulna dorsal angulation and varus angulation. Also, correlations of these parameters were analyzed statistically. Results The mean proximal ulna dorsal angulation (PUDA) was 6.4˚(SD 2.8˚), while the mean varus angulation of the proximal ulna was 12.4˚(SD 3.3˚). The length of the ulna bone was 253.6 mm (SD 19.9 mm) on average. The average minimum diameter of the medullary canal was 4.2 mm (SD 1.1 mm) located at 141.3 mm (SD 19.7 mm) from the olecranon tip. There is a positive correlation between age and minimum diameter in our patient cohort (p< 0.001). Conclusion Our study described the anatomy of the proximal ulna and the ulna shaft with a reproducible research method in a representative patient cohort. The knowledge of the evaluated anatomic parameters can lead to an improvement of any implant design for the fixation of proximal and diaphyseal ulna fractures.

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Section: Plos Onesupporting

confidence: 73%

Section: Plos Onementioning

confidence: 93%

Computer tomographic analysis of anatomic characteristics of the ulna – essential parameters for preshaped implants

et al. 2020

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“…This study demonstrated, using the distance mapping technique, that the 3D printed bone very accurately duplicated the three-dimensional geometry of the physical bone. Therefore, since the bi-lateral symmetry in the geometry of the radius has been demonstrated in the past [7,19,20], the contra-lateral bone can serve as a reliable replacement for the pre-injury geometry of the fractured bone. This method has been used in recent years for design of personalized total bone replacement such as replacement of the talus [23] and for design of personalized fracture xation plates.…”

Section: Discussionmentioning

confidence: 99%

“…This is especially true of forearm diaphyseal fracture xation where the bowed radius rotates nearly 180° about the ulna [1,2]. Accordingly, incomplete reconstitution of the radial bow during fracture surgery in both location and magnitude has been linked to reduced forearm rotation and suboptimal functional outcomes as well as altered kinematics [3][4][5][6][7][8][9][10] A radius bone plate often requires contouring in the sagittal, coronal, and axial planes, to match the threedimensional radial bow [3,4,7,11,12]. The radius of curvature is most pronounced on the volar and dorsal aspects of the bone, corresponding with the two most common surgical approaches to a radial shaft fracture.…”

Section: Introductionmentioning

confidence: 99%

“…There is substantial inter-subject variability in the curvature of the radius bone as demonstrated by a recent morphological study conducted on 422 cadaver radii [7] and because of this large variability, precontoured plates may not t as well as surgeon contoured plates. Furthermore, in highly comminuted fractures, the original shape of the fractured bone is di cult to assess and it relies on the surgeon's experience to restore the original contour.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the Level of Fit of Radial Fracture Fixation Plates Using Virtual and 3D-printed Models

Siegler

Stolle

Ilyas

et al. 2021

Preprint

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Radial fractures often require surgical stabilization with fracture fixation plates. Incomplete morphological reconstruction was linked to poor outcome such as limited forearm rotation. Pre-contoured plates are often used, but large inter-subject morphological variations may result in poor fit. Therefore, the goal of this study was to develop a reliable virtual measure of plate-to-bone fit. In addition, the study evaluated the accuracy with which 3D printed bones reproduce the morphology of the physical radius. Virtual models and 3D-printed models of six cadaver radii were produced from bone scans. Level of fit of pre-contoured plates were measured in three ways: directly on pre-contoured physical plates fitted to cadaver bone; pre-contoured physical plates fitted to 3D printed bone; and virtual plate models fitted to virtual bone models. In addition, the study evaluated the accuracy with which 3D printed bone reproduces the physical bone morphology. The results indicate excellent agreement between the physical and virtual level of fit measures as well as excellent geometrical accuracy of the 3D-printed bones. These provide the necessary foundation for guiding the development of better fitted pre-contoured fracture fixation plates as well as for developing pre-surgically patient specific pre-contoured plates.

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Radiographic Comparison of Forearm Symmetry in Healthy Individuals and its Importance in the Diagnosis of Longitudinal Radioulnar Dissociation

Jones,

Morway,

Gutowski

et al. 2023

The Journal of Hand Surgery

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A cadaveric study of radial and ulnar bowing in the sagittal and coronal planes

Cited by 12 publications

References 27 publications

Computer tomographic analysis of anatomic characteristics of the ulna – essential parameters for preshaped implants

Computer tomographic analysis of anatomic characteristics of the ulna – essential parameters for preshaped implants

Evaluation of the Level of Fit of Radial Fracture Fixation Plates Using Virtual and 3D-printed Models

Radiographic Comparison of Forearm Symmetry in Healthy Individuals and its Importance in the Diagnosis of Longitudinal Radioulnar Dissociation

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