Kinematic analysis of the movement of thyroid cartilage and hyoid bone during swallowing

Kinematic analysis of the movement of thyroid cartilage and hyoid bone during swallowing

Y.G. Yi et al. / Annals of Physical and Rehabilitation Medicine 61S (2018) e309–e433 bilitation efficiency from other groups. There was no significant ...

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Y.G. Yi et al. / Annals of Physical and Rehabilitation Medicine 61S (2018) e309–e433

bilitation efficiency from other groups. There was no significant difference in length of stay across all groups. Conclusion All patients with SCH have obtained functional gains following rehabilitation treatment. Those with hyperthyroidism have lower FIM scores with the efficiency of rehabilitation being similar in all groups. Keywords Subacute hypothyroidism; Functional outcomes; Rehabilitation efficiency Disclosure of interest The authors declare that they have no competing interest. https://doi.org/10.1016/j.rehab.2018.05.1007 ISPR8-1080

Prediction equation for body fat in spinal cord injured patients P. Wattanapan 1,∗ , K. Charoentanyarak 2 , C. Somboonporn 3 Faculty of Medicine, Khon Kaen University, Rehabilitation Medicine, Khon Kaen, Thailand 2 Khon Kaen Hospital, Rehabilitation Medicine, Khon Kaen, Thailand 3 Faculty of Medicine, Khon Kaen University, Radiology, Khon Kaen, Thailand ∗ Corresponding author. E-mail address: [email protected], [email protected] (P. Wattanapan)

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Introduction/Background Body mass index (BMI) is the one method to determine cardiovascular risk which is the common cause of death in spinal cord injury. Previous study reported that patient with spinal cord injury had lower total lean mass and higher total fat mass than the normal person with the same body mass index. Therefore, this study aimed to develop and validate equation for predicting percentage body fat in spinal cord injured patient. Material and method Cross-sectional descriptive study was conducted among sixty paraplegic patients for development group and 31 paraplegic patients for validation group. Demographic data including body weight, height and body mass index (BMI) were retrieved. All patients were evaluated percentage of body fat (%BF) using dual energy X-ray absorptiometry (DXA). Regression equation for %BF was created from the data in development group. After that, the equation was evaluated for accuracy in the validation group. Results Only BMI showed significantly correlated with %BF (P < 0.001). The suggested equation by stepwise multiple regression analysis was: %BF = (1.477 × BMI) −0.091 (R2 = 0.396, P < 0.001). When the equation was validated in the validated data group, the correlation coefficient of the predicted and DXA-measured %BF was r = 0.704 (P = 0.003). Bland and Altman analysis showed mean differences −1.49% with the limits of agreement ranged from −18.6% to 15.6%. Conclusion This study suggested the simple equation which might be helpful for evaluation of percentage of body fat in spinal cord injured patients. Keywords Body mass index; Body fat; Spinal cord injury Disclosure of interest This study was granted by Faculty of Medicine, Khon Kaen University. https://doi.org/10.1016/j.rehab.2018.05.1008

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Kinematic analysis of the movement of thyroid cartilage and hyoid bone during swallowing Y.J. Ra 1,∗ , S.H. Han 1 , K.H. Lee 1 , T.K. Kim 2 , M.S. Chung 3 , J.S. Jang 4 Hanyang University Medical Center, Department of Rehabilitation Medicine, Seoul, Republic of Korea 2 Chungdam Hospital, Department of Rehabilitation Medicine, Seoul, Republic of Korea 3 Hanyang University Medical Center, Department of Surgery, Seoul, Republic of Korea 4 Kyushu University, Center for Integration of Advanced Medicine Life Science Innovative Technologies, Kyushu, Japan ∗ Corresponding author. E-mail address: [email protected] (Y.J. Ra)

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Introduction/Background The movement of hyoid bone has been reported to be related in diagnosing dysphagia. In clinical setting, it could be evaluated by video fluoroscopic swallowing study (VFSS) that induces radiation exposure. In contrast with hyoid bone, the thyroid cartilage is easily seen through anterior neck. We hypotheses that the movement of thyroid cartilage correlates with that of hyoid bone and can be used as a parameter for swallowing evaluation. The purpose of this study is to investigate if the movement of thyroid cartilage and hyoid bone is correlated and to collect basic data for using thyroid cartilage as a parameter for swallowing evaluation. Material and method Total 25 subjects’ VFSS images with normal swallowing function were analyzed by specially developed software. Positions of laryngeal prominence and margin of the hyoid were automatically extracted. Two sets of the loci were obtained in all frames of VFSS. X- and Y-coordinates showed anterior-posterior axis and superior-inferior axis. Pearson correlation coefficients for X- and Y-coordinate components were computed respectively. Results X- and Y-coordinates of thyroid cartilage and hyoid bone moved in a similar pattern. Pearson correlation coefficient of X- and Y-coordinate components was from 0.611 to 0.981, which meant movement of thyroid cartilage and that of hyoid bone was strongly correlated. Conclusion We could analyze the movement of thyroid cartilage and hyoid bone by specially developed software and concluded that the movement of thyroid cartilage and hyoid bone was strongly correlated. This study implies that analysis of thyroid cartilage can be used as a parameter for swallowing evaluation. Keywords Dysphagia; Thyroid cartilage; VFSS Disclosure of interest The authors declare that they have no competing interest. https://doi.org/10.1016/j.rehab.2018.05.1009