title: Tennis Elbow Diagnosis Using Equivalent Uniform Voltage to Fit the Logistic and the Probit Diseased Probability Models.
abstract: To develop the logistic and the probit models to analyse electromyographic (EMG) equivalent uniform voltage- (EUV-) response for the tenderness of tennis elbow. In total, 78 hands from 39 subjects were enrolled. In this study, surface EMG (sEMG) signal is obtained by an innovative device with electrodes over forearm region. The analytical endpoint was defined as Visual Analog Score (VAS) 3+ tenderness of tennis elbow. The logistic and the probit diseased probability (DP) models were established for the VAS score and EMG absolute voltage-time histograms (AVTH). TV50 is the threshold equivalent uniform voltage predicting a 50% risk of disease. Twenty-one out of 78 samples (27%) developed VAS 3+ tenderness of tennis elbow reported by the subject and confirmed by the physician. The fitted DP parameters were TV50 = 153.0 mV (CI: 136.3-169.7 mV), γ 50 = 0.84 (CI: 0.78-0.90) and TV50 = 155.6 mV (CI: 138.9-172.4 mV), m = 0.54 (CI: 0.49-0.59) for logistic and probit models, respectively. When the EUV ≥ 153 mV, the DP of the patient is greater than 50% and vice versa. The logistic and the probit models are valuable tools to predict the DP of VAS 3+ tenderness of tennis elbow.
authors.affiliation: Medical Physics and Informatics Laboratory of Electronics Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, San-Min District, Kaohsiung 80778, Taiwan.
authors.forename: Tsair-Fwu
authors.initials: TF
authors.lastname: Lee
authors.affiliation: Institute of Photonics and Communications, National Kaohsiung University of Applied Sciences, Kaohsiung 80778, Taiwan ; Department of Orthopedic, Kaohsiung Municipal Min-Sheng Hospital, Kaohsiung 80276, Taiwan.
authors.forename: Wei-Chun
authors.initials: WC
authors.lastname: Lin
authors.affiliation: Department of Electronics Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 80778, Taiwan.
authors.forename: Hung-Yu
authors.initials: HY
authors.lastname: Wang
authors.affiliation: Department of Plastic Surgery, Kaohsiung Municipal Min-Sheng Hospital, Kaohsiung 80276, Taiwan.
authors.forename: Shu-Yuan
authors.initials: SY
authors.lastname: Lin
authors.affiliation: Medical Physics and Informatics Laboratory of Electronics Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, San-Min District, Kaohsiung 80778, Taiwan.
authors.forename: Li-Fu
authors.initials: LF
authors.lastname: Wu
authors.affiliation: Medical Physics and Informatics Laboratory of Electronics Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, San-Min District, Kaohsiung 80778, Taiwan.
authors.forename: Shih-Sian
authors.initials: SS
authors.lastname: Guo
authors.affiliation: Medical Physics and Informatics Laboratory of Electronics Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, San-Min District, Kaohsiung 80778, Taiwan.
authors.forename: Hsiang-Jui
authors.initials: HJ
authors.lastname: Huang
authors.affiliation: Medical Physics and Informatics Laboratory of Electronics Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, San-Min District, Kaohsiung 80778, Taiwan ; Department of Radiation Oncology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, College of Medicine, Kaohsiung 83342, Taiwan.
authors.forename: Hui-Min
authors.initials: HM
authors.lastname: Ting
authors.affiliation: Medical Physics and Informatics Laboratory of Electronics Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, San-Min District, Kaohsiung 80778, Taiwan ; Department of Radiation Oncology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, College of Medicine, Kaohsiung 83342, Taiwan.
authors.forename: Pei-Ju
authors.initials: PJ
authors.lastname: Chao
mesh_terms: D000328:Adult; D000368:Aged; D004576:Electromyography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D063806:Myalgia / Q000000981:diagnostic imaging / Q000503:physiopathology*; D011859:Radiography; D013716:Tennis Elbow / Q000000981:diagnostic imaging / Q000503:physiopathology*; D014965:X-Rays