Intraobserver and interobserver reliability of radial torsion angle measurements by a new and alternative method with computed tomography

Freitas, Luiz Fernando Pinheiro de; Barbieri, Cláudio Henrique; Mazzer, Nílton; Zatiti, Salomão Chade Assan; Bellucci, Ângela Delete; Nogueira-Barbosa, Marcello Henrique

doi:10.1590/s1807-59322010001100006

Cited by 8 publications

(7 citation statements)

References 13 publications

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“…For the rotational analysis, the cutting plane DTM2 and the rotation point PNT2 were defined. PNT2 stands at the most external edge of the radius on DTM2 (b); the simulation process allowed us to calculate the α angle required to achieve the angular realignment (c); through torsional simulation [20], points PNT3, PNT4, and the resultant axis A_2 were defined. Around the latter a torsion of β = 25 degree was performed to guarantee the optimal configuration of the bone (d).…”

Section: Resultsmentioning

confidence: 99%

Computer-Aided Surgical Simulation for Correcting Complex Limb Deformities in Children

et al. 2020

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This work aims to present an in-house low-cost computer-aided simulation (CASS) process that was recently implemented in the preoperative planning of complex osteotomies for limb deformities in children. Five patients admitted to the Unit of Paediatric Orthopaedics and Traumatology from April 2018 to December 2019, for correcting congenital or post-traumatic limb deformities were included in the study. Three-dimensional (3D) digital models were generated from Computed Tomography (CT) scans, using free open-source software, and the surgery was planned and simulated starting from the 3D digital model. 3D printed sterilizable models were fabricated using a low-cost 3D printer, and animations of the operation were generated with the aim to accurately explain the operation to parents. All procedures were successfully planned using our CASS method and the 3D printed models were used during the operation, improving the understanding of the severely abnormal bony anatomy. The surgery was precisely reproduced according to CASS and the deformities were successfully corrected in four cases, while in one case, the intraoperative intentional undersizing of the bone osteotomy produced an incomplete correction of a congenital forearm deformity. Our study describes the application of a safe, effective, user-friendly, and low-cost CASS process in paediatric orthopaedics (PO) surgery. We are convinced that our study will stimulate the widespread adoption of this technological innovation in routine clinical practice for the treatment of rare congenital and post-traumatic limb deformities during childhood.

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Section: Resultsmentioning

confidence: 99%

Computer-Aided Surgical Simulation for Correcting Complex Limb Deformities in Children

et al. 2020

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“…Many previous studies have found variation in radial torsion angle among individuals but limited variation between sides of the same individual. 22,23,26,27 Despite this, a study by Dumont et al 25 noted some intra-individual side-to-side variation in normal volunteers, indicating that side-to-side comparison may not be as robust as originally believed. The lack of side-to-side comparison in the present retrospective study prevents us from assessing this.…”

Section: Discussionmentioning

confidence: 96%

Assessing distal radius malrotation following fracture using computed tomography

Filer

Smith

Giddins

2019

J Orthop Surg (Hong Kong)

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Hypothesis: When the distal fracture fragment in distal radius fractures displaces, it commonly rotates as well as shortens and angulates. Aim: The aim of this study was to assess the frequency and magnitude of malrotation of the distal fracture fragment using computed tomography (CT). Methods: A retrospective radiological assessment of 85 CT scans of the distal radius, 35 following fracture and 50 normal radii, was carried out. We developed and applied a simple method for measuring rotation of the distal radius relative to the diaphysis using routine CT scans of the wrist. A Mann-Whitney analysis was used to identify differences in radial rotation between fractures and controls. Intra-and inter-observer reliability were analyzed using intra-class correlation coefficients (ICCs) and Bland-Altman plots. Results: The articular surface of the distal radius is normally rotated in the long axis of the forearm relative to the diaphysis, either into pronation or into supination. The median radial rotation angle of controls was 1 pronation (range À15 to 4 ) compared to 3 pronation (range À24 to 31 ) in the fracture group. The absolute rotation angle was significantly greater in the fracture group (median 10 , range 0-31 vs. 3 , range 0-15 ; p < 0.001) and outside the "normal range" of controls in 26 cases indicating that 75% had rotated appreciably following injury. Intra-and inter-observer reliability of measurements were good with ICCs of 0.99 and 0.98, respectively. Conclusions: Malrotation of the distal radius appears common following distal radius fracture. Malrotation of the distal fracture fragment has been shown to affect distal radio-ulnar joint function. Despite this, rotational deformity is rarely addressed in clinical practice as it is difficult to appreciate on simple radiographs. The simplified method described here is easy to use in routine clinical practice and also appears reliable. Measuring radial rotation may be an important consideration when planning both primary treatment and corrective osteotomy for patients with distal radial malunion.

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“…Resting ankle plantar flexion passive ROM was measured in the SA condition to apply the same degree of plantar flexion as in the RA condition. The active ROM of ankle eversion, 24 passive ROM of ankle plantar flexion in the resting position, 25 and active ROM of hip external rotation 26 were measured by Tester 1 bilaterally while participants were seated on a table with their foot unsupported. A universal goniometer with an arm length of 17 centimetres from axis to tip was used.…”

Section: Measuring Rom To Obtain Baseline Datamentioning

confidence: 99%

Description and Intrarater Test–Retest Reliability of a Reverse-Action Method to Assess Ankle Evertor Muscle Performance: The I-to-V Test

Park

2018

Physiotherapy Canada

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Purpose: Reverse action (RA) of the ankle evertor muscle is when the proximal attachment moves toward the distal attachment, moving the lower leg in the frontal plane when the foot and ankle are fixed on the ground and inducing ankle eversion. The purpose of this study was to describe an RA method for measuring ankle evertor muscle performance. Method: Eighteen healthy individuals were recruited for this study. To assess the RA of their ankle evertors, the participants sat with their knees together and their feet firmly planted on the floor, then spread their knees as far apart as possible. A tester used a measuring tape to measured the distance (in cm) between the medial tibial tuberosity of the tested side and that of the non-tested side. In the end range position of the RA, ankle evertor electromyographic activity was recorded simultaneously. The intra-class correlation coefficient (ICC) and standard error of measurement (SEM) were calculated to establish the intrarater test-retest reliability. The correlation between each performance value and muscle activity was assessed using a linear correlation model. Results: The proposed method of assessing RA performance was highly reliable (ICC ¼ 0.95) and had a low SEM (1.63 cm); in addition, the performance value showed a strong positive correlation with ankle evertor muscle activity (r ¼ 0.90; 95% CI: 0.79, 0.95; p ¼ 0.01). Conclusions: The proposed RA method of assessing the ankle evertor muscles can be used as a simple, reliable, economical performance test. It can also be used as an alternate method of testing the peroneal muscles rather than selectively measuring ankle evertor performance because hip external rotation occurs when performing RA.

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Intraobserver and interobserver reliability of radial torsion angle measurements by a new and alternative method with computed tomography

Cited by 8 publications

References 13 publications

Computer-Aided Surgical Simulation for Correcting Complex Limb Deformities in Children

Computer-Aided Surgical Simulation for Correcting Complex Limb Deformities in Children

Assessing distal radius malrotation following fracture using computed tomography

Description and Intrarater Test–Retest Reliability of a Reverse-Action Method to Assess Ankle Evertor Muscle Performance: The I-to-V Test

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