• Clinical Pain
• /
• v.20 no.2
• /
• pp.59-69
• /
• 2021

Patients with pain, numbness, and weakness in their elbows, wrists, and hands often need proper rehabilitation treatments. Among them, musculoskeletal injection therapy should be performed after a full evaluation of the patient, taking into account history and physical examination leading to clinical diagnosis. General rules such as accurate diagnosis and injection materials selection are used to achieve maximum benefit with minimal side effects. During injection, patient location, aseptic care, penetration techniques, follow-up and follow-up care must be maintained. Specific techniques may vary depending on the type, lesion, and location of the injection therapy. For optimal effectiveness, physician should inject directly into the lesion and avoid the injection of surroundings as much as possible. Therefore, ultrasound-guided injections are needed to accurately inject. These conditions and other conditions of the hands, wrists, and elbows can be effectively diagnosed and treated with diagnostic ultrasound and ultrasound-guided injections.

• Journal of the Korean Society of Industry Convergence
• /
• v.25 no.6_1
• /
• pp.953-959
• /
• 2022

In this paper, the design result of robotic tools and the development of robot control system for chemical coupler assembly are presented. This research aims to eliminate the risk of chemicals exposed to human operators by developing the robotic tools and robot automation system for chemical tank lorry unloading that were done manually. Due to tight tolerance between couplers, even small pose error may result in very large internal force. In order to resolve the problem, the 6-axis compliance device is employed, which can provide not only enough compliance between couplers but also F/T sensing. The 6-axis compliance device having large force and moment capacity is designed. A simple linear gripper with rack-and-pinion is designed to grasp two sizes of couplers. The proposed robot automation system consists of 6-DOF collaborative robot with offset wrist, 6-axis compliance device with F/T sensing, linear gripper, and two robot visions.

• International Journal of Advanced Culture Technology
• /
• v.11 no.2
• /
• pp.298-309
• /
• 2023

The mouse as an input device has undoubtedly brought convenience to users due to its intuitiveness and simplicity, but it also brought unprecedented issues such as carpal tunnel syndrome (CTS). As a result, the necessity of alternative input devices that put less strain on the wrist, while still providing the convenience of a conventional mouse, has emerged. Unfortunately, there have been several research about alternative devices to replace a mouse, however, they showed inconsistent results. This study suggests that those inconsistent results may stem from the type and the difficulty of tasks used in previous studies. Therefore, we designed this study to compare the performance and perceived workload of three input devices (Mouse/Trackball/Touchpad) in each condition in terms of task type (Targeting/Tracking) and difficulty level (Easy/Hard). The results indicated that there were significant performance differences and no significant workload differences among the three devices, and the interactions were observed in some conditions. These results can provide users with practical guidelines to choose the optimal input device according to their needs or purpose.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2009.06a
• /
• pp.73-74
• /
• 2009

• Journal of the Korean Arthroscopy Society
• /
• v.14 no.2
• /
• pp.58-64
• /
• 2010

• Proceedings of the ESK Conference
• /
• 2004.10a
• /
• pp.22-22
• /
• 2004

• Physical Therapy Korea
• /
• v.20 no.2
• /
• pp.28-37
• /
• 2013

This study examined differences in the activity of upper limb muscles according to how an ultrasound head is gripped. Twenty-two adult males were participated in the study. Each participant was asked to apply ultrasound treatment on to a lump of pork meat by two different ultrasound head grip patterns: spherical and cylindrical grips. Muscle activity was measured in the extensor carpi radialis longus (ECRL), flexor carpi ulnaris (FCU), and pronator teres (PT), triceps brachii (TB), middle deltoid (MD), and upper trapezius (UT) muscles. There were no significant differences in the EMG signals of any muscle according to the ultrasound head grip pattern (p>.05). There were significant differences in the EMG signal of each type of muscle (p<.05). The EMG signal of UT was the lowest and that of TB was lower than ECRL and FCU. There were interactions between ECRL and FCU, between ECRL and PT, between FCU and ECRL, and between FCU and MD. The EMG signal of ECRL using the cylindrical head was low and that of FCU with the cylindrical head was high, while the opposite was the case with the spherical head ($p_{adj}$ <.05/15). The results of this study indicate that the wrist muscles worked actively when the participants applied ultrasound therapy using both spherical and cylindrical heads. A spherical head might induce imbalanced muscle activity among the wrist muscles, leading to deviation of the wrist joint. Therefore, the cylindrical head is recommended for ultrasound therapy because it produced a constant, repeated force.

• Journal of Biomedical Engineering Research
• /
• v.41 no.2
• /
• pp.94-100
• /
• 2020

The purpose of this study was to present the models for classifying the wrist X-ray images by types and for segmenting the radius automatically in each image using deep learning and to verify the learned models. The data were a total of 904 wrist X-rays with the distal radius fracture, consisting of 472 anteroposterior (AP) and 432 lateral images. The learning model was the ResNet50 model for AP/lateral image classification, and the U-Net model for segmentation of the radius. In the model for AP/lateral image classification, 100.0% was showed in precision, recall, and F1 score and area under curve (AUC) was 1.0. The model for segmentation of the radius showed an accuracy of 99.46%, a sensitivity of 89.68%, a specificity of 99.72%, and a Dice similarity coefficient of 90.05% in AP images and an accuracy of 99.37%, a sensitivity of 88.65%, a specificity of 99.69%, and a Dice similarity coefficient of 86.05% in lateral images. The model for AP/lateral classification and the segmentation model of the radius learned through deep learning showed favorable performances to expect clinical application.

• The Journal of Korean Physical Therapy
• /
• v.29 no.4
• /
• pp.169-174
• /
• 2017

Purpose: The purpose of this study was to resolve, in an efficient manner, the mechanoreceptor problems of the part far from the paretic upper extremity in stroke patients, as well as to provide clinical basic data of an intervention program for efficient neurodynamic in stroke patients, by developing a rhythmic neurodynamic exercise program and verifying functional changes depending on the increase in the upper extremity nerve conduction velocity. Methods: Samples were extracted from 18 patients with hemiplegia, caused by stroke, and were randomly assigned to either the experimental group I for the general upper extremity neurodynamic (n=9) and the experimental group II for rhythmic upper extremity neurodynamic (n=9). An intervention program was applied ten times per set (three sets one time) and four times a week for two weeks (once a day). As a pre-test, changes in the upper extremity nerve conduction velocity and functions were assessed, and two weeks later, a post-test was conducted to re-measure them in the same manner. Results: The wrist and palm sections of the radial nerve and the wrist and elbow sections of the median nerve, as well as the wrist, lower elbow, upper elbow, and axilla sections of the ulnar nerve had significant differences with respect to the upper extremity nerve conduction velocity between the two groups (p<0.05)(p<0.01), and significant differences were also found in the upper extremity functions (p<0.05). Conclusion: Rhythmic neurodynamic accelerated the nerve conduction velocity more in broader neural sections than the general neurodynamic. In conclusion, rhythmic neurodynamic was proven to be effective for improving the functions of upper extremity.

• Science of Emotion and Sensibility
• /
• v.20 no.2
• /
• pp.11-22
• /
• 2017

For the elderly whose path-finding capability and distance perception abilities have been weakened, the study intends to provide UI design of a wrist type walking aid device which allows the elderly to receive both visual and haptic information that induces the elderly' occasional attention by utilizing currently available haptic technology. The study asked 30 the elderly older than 65 years old, target consumers of the technology, to wear a smart watch and find a path by following the directions provided by four different UI versions of Wizard of Oz. Then, the study has conducted post-experience interview. Quantitative analyses was performed their preference level, number of misguided participants and the number of deviations incurred. Based on the data collected, the study has applied grounded theory, a qualitative research methodology, in order to grasp new understanding about the research, and has consequently reached some significant implications for further research on wrist type walking aid device for the elderly, who show self-contradictory demands.