Kinematic analysis of the scaphoid using gated four-dimensional CT

Jais, Ita Suzana Mat; Tay, Shian Chao

doi:10.1016/j.crad.2017.04.005

Cited by 12 publications

(12 citation statements)

References 22 publications

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“…After ligament section, the movement of the scaphoid increased up to 1.39 mm compared to its original position. These findings support the added value of 4DCT for diagnosing carpal instabilities associated with ligamentous damage where static imaging techniques fail 9,10 .…”

Section: Introductionsupporting

confidence: 69%

Four-dimensional CT as a valid approach to detect and quantify kinematic changes after selective ankle ligament sectioning

Buzzatti

Keelson

Apperloo

et al. 2019

Sci Rep

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The objective of the current study was to explore the potential of dynamic computed tomography to detect kinematic changes, induced by sequential sectioning of the lateral collateral ligaments of the ankle, during full motion sequence of the talocrural joint. A custom-made device was used to induce cyclic controlled ankle inversion movement in one fresh frozen cadaver leg. A 256-slice CT scanner was used to investigate four different scenarios. Scenario 1 with all ligaments intact was first investigated followed by sequential section of the anterior talo-fibular ligament (Scenario 2), the calcaneo-fibular ligament (Scenario 3) and posterior talo-fibular ligament (Scenario 4). Off-line image processing based on semi-automatic segmentation and bone rigid registration was performed. Motion parameters such as translation, rotational angles and orientation and position of the axis of rotation were calculated. Differences between scenarios were calculated. Progressive increase of cranio-caudal displacement up to 3.9 mm and flexion up to 10° compared to Scenario 1 were reported. Progressive changes in orientation (up to 20.6°) and position (up to 4.1 mm) of the axis of rotation were also shown. Estimated effective dose of 0.005 mSv (1.9 mGy CTDIvol) was reported. This study demonstrated that kinematic changes due to the absence of ligament integrity can be detected with 4DCT with minimal radiation exposure. Identifying abnormal kinematic patterns could have future application in helping clinicians to choose patients’ optimal treatment. Therefore, further studies with bigger in vitro sample sizes and consequent investigations in vivo are recommended to confirm the current findings.

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Section: Introductionsupporting

confidence: 69%

Four-dimensional CT as a valid approach to detect and quantify kinematic changes after selective ankle ligament sectioning

Buzzatti

Keelson

Apperloo

et al. 2019

Sci Rep

View full text Add to dashboard Cite

show abstract

“…A number of authors have described CT techniques to image and analyze the 3D kinematics of carpal bones. Most authors used in vitro models in which only one wrist was scanned [ 4 , 5 , 7 ]. Other authors used a step-wise motion of the wrist to reconstruct the total kinematics during full motion [ 17 , 21 , 22 ].…”

Section: Discussionmentioning

confidence: 99%

“…Until today, studies evaluated cadaveric wrists to describe radiocarpal kinematics [ 4 , 5 , 7 , 10 ]. In addition, most studies did not quantitatively analyze the motion patterns of the carpal bones.…”

Section: Introductionmentioning

confidence: 99%

Quantifying in vivo scaphoid, lunate, and capitate kinematics using four-dimensional computed tomography

et al. 2020

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Objective We aimed to establish a quantitative description of motion patterns and establish test-retest reliability of the four-dimensional CT when quantifying in vivo kinematics of the scaphoid, lunate, and capitate. Materials and methods We assessed in vivo kinematics of both wrists of 20 healthy volunteers (11 men and 9 women) between the ages of 20 and 40 years. All volunteers performed active flexion-extension and radial-ulnar deviation with both wrists. To test for reliability, one motion cycle was rescanned for both wrists approximately 15 min after the first scan. The coefficient of multiple correlation was used to analyze reliability. When two motion patterns are similar, the coefficient of multiple correlation tends towards 1, whereas in dissimilar motion patterns, it tends towards 0. The root mean square deviation was used to analyze the total motion patterns variability between the two scans. Results Overall, mean or median coefficient of multiple correlations were higher than 0.86. The root mean square deviations were low and ranged from 1.17° to 4.29°. Conclusion This innovative non-invasive imaging technique can reliably describe in vivo carpal kinematics of uninjured wrists in healthy individuals. It provides us with a better understanding and reference values of carpal kinematics of the scaphoid, lunate, and capitate.

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“…Delayed diagnosis often occurs because early changes in bone alignment and movement are difficult to detect (and require high spatial resolution) and may only be seen when the wrist is undergoing motion or loaded. These subtle bony changes cannot be readily seen in traditional two-dimensional (2D) planar X-rays that are commonly used to assess wrist injury and to guide treatment [4,5]. Surgeons therefore rely on physical examinations (i.e., scaphoid shift test) to assess dynamic instability but these are often subject to interpretation by the clinician and thus, highly dependent on clinician experience.…”

Section: Introductionmentioning

confidence: 99%

“…Surgeons therefore rely on physical examinations (i.e., scaphoid shift test) to assess dynamic instability but these are often subject to interpretation by the clinician and thus, highly dependent on clinician experience. Additionally, these physical examination maneuvers typically focus on extremes of mobility, which do not always indicate abnormality [4]. Improved diagnostic tools are needed, which are dynamic in nature and can therefore detect dynamic instabilities, so that progression of the instability can be mitigated through medical intervention.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Four-Dimensional Computed Tomography as a Technique for Quantifying Carpal Motion

Robinson

Straatman

Lee

et al. 2021

Journal of Biomechanical Engineering

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Delayed diagnosis of dynamic carpal instability often occurs because early changes in bone alignment and movement are difficult to detect and manifest mainly during a dynamic/functional task. Current diagnostic tools are only able to examine the carpal bones under static or sequential-static conditions. Four-dimensional (three dimensions + time) computed tomography (4DCT) enables quantification of carpal mechanics through 3D volume sequences of the wrist in motion. A comprehensive understanding of carpal mechanics is needed to define normal function and structure and provide targets for treatment of carpal injuries. In this study, measurements of scaphoid translation and joint congruency were taken by creating models from the CT scans of the carpals in extreme frames of motion, registering those models to the neutral position, transforming the models into a local coordinate system, and using software to calculate the joint surface areas (JSA). Results indicated that the centroid of the scaphoid translated 6.4 ± 1.3 mm and extended from extreme radial to extreme ulnar deviation. Results are consistent with the literature. An additional study was performed to measure the responsiveness of the 4DCT technique presented. Bone models from each frame of motion for radioulnar deviation (RUD) and flexion extension (FE) were created and distinct differences between their JSA were measured qualitatively and quantitatively. The results show that there was statistically significantly different JSA within carpal joints between RUD and FE. These studies provide the first step in developing the methodology when using 4DCT scanning to measure subtle abnormalities in the wrist.

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Kinematic analysis of the scaphoid using gated four-dimensional CT

Cited by 12 publications

References 22 publications

Four-dimensional CT as a valid approach to detect and quantify kinematic changes after selective ankle ligament sectioning

Four-dimensional CT as a valid approach to detect and quantify kinematic changes after selective ankle ligament sectioning

Quantifying in vivo scaphoid, lunate, and capitate kinematics using four-dimensional computed tomography

Evaluation of Four-Dimensional Computed Tomography as a Technique for Quantifying Carpal Motion

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