How Does Torsional Deformity of the Radial Shaft Influence the Rotation of the Forearm?: A Biomechanical Study

Kasten, Philip; Krefft, Mathias; Hesselbach, Jürgen; Weinberg, Annelie

doi:10.1097/00005131-200301000-00009

Cited by 51 publications

(34 citation statements)

References 19 publications

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“…Our results disagree with those Kasten et al (2003) who made a rotational malunion at the midshaft level of the radius and reported that a supination torsional deformity at the midshaft of the radius did not increase supination range and a pronation torsional deformity at the same level did not increase pronation range. The reason why their rotation osteotomies did not increase the arc of rotation in the rotated direction was not discussed.…”

Section: Article In Presscontrasting

confidence: 99%

The Rotational Effect of Pronation and Supination Osteotomies of the Forearm in a Cadaver Model: A Comparison of Osteotomy Sites on the Radius and the Ulna

Shirai

Ryu

Kish

et al. 2007

J Hand Surg Eur Vol

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The purpose of this study was to investigate the effect on forearm rotation of rotation osteotomies at the distal and proximal levels of the radius and the ulna. Rotation osteotomies of 15 degrees and 30 degrees were made in the distal and proximal one-third of the radius and the ulna in ten cadaver specimens and changes of forearm arc of rotation were compared after osteotomy at the four sites. This study identifies the proximal ulna as the best of these sites for rotation osteotomy because of the high gain in the rotated direction and minimal loss in the opposite direction.

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Section: Article In Presscontrasting

confidence: 99%

The Rotational Effect of Pronation and Supination Osteotomies of the Forearm in a Cadaver Model: A Comparison of Osteotomy Sites on the Radius and the Ulna

Shirai

Ryu

Kish

et al. 2007

J Hand Surg Eur Vol

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“…Rotational malalignment, although difficult to quantify by plain x-rays, causes concomitant loss of forearm rotation. 21 Indeed, for every degree of rotational deformity, 1-2°of forearm rotation may be lost. In general, ulnar malrotation does not alter the overall arc of forearm rotation, but it does change the "set point" of forearm motion.…”

Section: Forearm Fracturesmentioning

confidence: 99%

Pediatric Distal Radius and Forearm Fractures

Bae¹

2008

The Journal of Hand Surgery

124

127

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“…The motion depends upon the radius and ulna being fully intact and aligned in its axis, and any damage to these most likely results in the loss of range of motion restricting ability to perform these daily tasks [6] [14].…”

Section: Discussionmentioning

confidence: 99%

The Effect of Angulated Radius Fractures in Forearm Rotation: A Computer Based Model

Karuppiah¹,

Qureshi²,

McNally³

2016

JBiSE

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Background: Forearm fractures amongst children are quite a common presentation. The accuracy of correct alignment in forearm bones is important as it determines the degree of forearm rotation (pronation-supination). However in children due to the potential for continuous growth, a degree of angulation is acceptable. The aim of this study was to determine the effect of angulation of forearm fracture on forearm rotation using computer stimulation. Methods: Using a 3D computer modelling software (Wildfire Pro Engineer 4.0, Creo by PTC, Needham, MA), an accurate to scale model of the radius and ulna was replicated from a 7 year old forearm. A realistic representation of pronation/supination of the forearm was applied and a fracture at the junction of proximal one third and distal two third was created. A rotational simulation was created and ended when maximum pronation and supination was reached. Maximum pronation and supination was reached when either no more rotation could occur due to a misalignment of the radius and ulna or there was a collision of the bones. The simulation was repeated in increments of angulation of 2˚ up to 26˚. The angulations that resulted in a combined range of motion (50˚ pronation and 80˚ supination) less than 130˚ were recorded as unacceptable and the others were as acceptable. Findings: The study showed that radius angulation fracture of >16˚ in the proximal third of the radius would result in an unacceptable reduction of pronation-supination to less than 130˚. Conclusion: Patients with more >16˚ of radius angulation in a distal third shaft fracture of the radius may result in clinical reduction in forearm rotation.

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How Does Torsional Deformity of the Radial Shaft Influence the Rotation of the Forearm?: A Biomechanical Study

Abstract: An axial torsional deformity of the radius of >30 degrees causes a statistically significant loss of forearm rotation in fresh cadavers.

Cited by 51 publications

References 19 publications

The Rotational Effect of Pronation and Supination Osteotomies of the Forearm in a Cadaver Model: A Comparison of Osteotomy Sites on the Radius and the Ulna

The Rotational Effect of Pronation and Supination Osteotomies of the Forearm in a Cadaver Model: A Comparison of Osteotomy Sites on the Radius and the Ulna

Pediatric Distal Radius and Forearm Fractures

The Effect of Angulated Radius Fractures in Forearm Rotation: A Computer Based Model

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