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JYMS : Journal of Yeungnam Medical Science

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Gun Ju Park 4 Articles
Utility of H-reflex in the Diagnosis Cervical Radiculopathy.
Jun Lee, Gun Ju Park, Hyun Cheol Doo, Sung Geon Park, Yun Seog Jeong, Jung Sang Hah
Yeungnam Univ J Med. 1997;14(1):111-122.   Published online June 30, 1997
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  • 23 Download
  • 3 Crossref
AbstractAbstract PDF
H-reflex is a kind of late respons which can be used for the proximal nerve conduction study. Also it is a useful and widely used nerve conduction technique es to look electrically at the monosynaptic reflex. Although recordable from all muscles theoretically, H-reflexes are most commonly recorded from the calf muscles following stimulation of the tibial nerve in the popliteal fossa. But in this study, We tried to establish the normal data and to evaluate the significance of the H-reflex study in cervical radiculopathy. H-reflexes were recorded from flexor carpi radialis (FCR) muscle, extensor carpi radialis (ECR) muscle, brachioradialis (BR) muscle, and abductor digiti minimi (ADM) muscle in 31 normal adults (62 cases) and 12 patients with cervical radiculopathy. The mean values of H-reflex latency in normal control group were 16.16+/- 1.65 msec in FCR; 15.99+/- 1.25 msec in ECR; 16.47+/- 1.59 msec in BR; 24.46+/- 1.42 msec in ADM. And the mean values of side to side difference of H-reflex latency were 0.47+/- 0.48 msec in FCR; 0.68+/- 0.72 msec in ECR; 0.63+/- 0.43 msec in BR; 22.31+/- 1.24 msec in ADM. Mean values of side to side differences of interlatency time were 0.49+/-0.47 msec in FCR; 0.73+/- 0.62 msec in ECR; 0.79+/- 0.71 msec in BR; 0.69+/- 0.44 msec in ADM. Also, there were no significant differences in H-reflex latency between right and left side. H-reflex tests in patient group with cervical radiculopathy revealed abnormal findings in 11 out of 12 patients. These results suggest that H-reflex in the upper extremity would be helpful in the diagnosis of the cervical radiculopathy.


Citations to this article as recorded by  
  • Retraining Reflexes: Clinical Translation of Spinal Reflex Operant Conditioning
    Amir Eftekhar, James J.S. Norton, Christine M. McDonough, Jonathan R. Wolpaw
    Neurotherapeutics.2018; 15(3): 669.     CrossRef
  • Abnormal Flexor Carpi Radialis H-Reflex as a Specific Indicator of C7 as Compared With C6 Radiculopathy
    Chaojun Zheng, Yu Zhu, Feizhou Lv, Xiaosheng Ma, Xinlei Xia, Lixun Wang, Xiang Jin, Robert Weber, Jianyuan Jiang, Kevin Anuvat
    Journal of Clinical Neurophysiology.2014; 31(6): 529.     CrossRef
  • Utility of Flexor Carpi Radialis H-Reflex in Diagnosis of Cervical Radiculopathy
    Dariush Eliaspour, Ehsan Sanati, Mohammad Reza Hedayati Moqadam, Seyed Mansoor Rayegani, Mohammad Hasan Bahrami
    Journal of Clinical Neurophysiology.2009; 26(6): 458.     CrossRef
Distribution of Weakness at the Lower Extremity of Hemiparesis Patients.
Gun Ju Park, Jung Sang Hah, Wook Nyeun Kim
Yeungnam Univ J Med. 1997;14(1):101-110.   Published online June 30, 1997
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  • 2 Download
AbstractAbstract PDF
The maximal voluntary strength of knee extension and flexion on both the right and left sides was measured in patients with hemiparesis of upper motor neuron type and in a group of normal subjects. Significant differences of maximal voluntary strength were found between male and female but the ratio of flexor to extensor strength did not vary significantly between the sides, between the exs in normal subjects. The maximal voluntary strength of uninvolved side were not reduced significantly but involved side reduced significantly in patients. The ratio of flexor to extensor strength in hemiparetic side was significantly less than the ratio for the normal subjects but not significant difference in uninvolved side of patients. According to the above results, the maximal voluntary strength of flexion was more reduced than that of the extension on lower extremity of hemiparesis patients. The strength ratio of flexion to extension was a useful parameter for guiding the rehabilitation of hemiparesis.
A Clinical Study of 52 Patients with Myasthenia Gravis Syndrome.
Gun Ju Park, Jung Sang Hah, Jun Lee, Hyun Cheol Do, Seung Kweun Park, Sang Dug Suh, Byung Soo Kee
Yeungnam Univ J Med. 1996;13(1):86-96.   Published online June 30, 1996
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  • 3 Download
AbstractAbstract PDF
The authors experienced 52 patients with myasthenia gravis who were diagnosed at the Department of Neurology, Yeungnam University Hospital from August 1985 to January 1996. The following results were obtained through diagnostic evaluation and treatment. 1. The ratio of male to female was 1:1.7 and the most prevalent age group was second decade. 2. The most common initial presentation symptom was ocular(71.2%) and the peak incidence group was stage I (69.3%) according to the modified Osserman's classification. 3. In 16 patients(30.8%), it took more than a year to diagnose due to symptoms which were relapsed and remitting. 4. Of 52 patients, 2 cases were associated with thyroid disease(3.8%) and 2 with insulin-dependent diabetes mellitus(3.8%). 5. All of those who received anticholinesterase and corticosteroid therapy were improved with the exception of 5 cases which were improved after thymectomy and/or plasmapheresis.
Comparision of Heoatitis B Virus Markers in the Serum and the Cerebrospinal Fluid
Sang Dug Suh, Seong Min Kim, Jun Lee, Gun Ju Park, Hyun Cheol Do, Yeung Ju Byun
Yeungnam Univ J Med. 1995;12(2):282-291.   Published online December 31, 1995
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  • 1 Download
AbstractAbstract PDF
We investigated HBV markers in serum and cerebrospinal fluid of 50 subjects with neurologic disorders or other disorders, who visited Dept. of neurology, college of medicine, Yeungnam University, from April-1 to August-31 1994 and were performed cerebrospinal fluid analysis to investigate the detection rate of HBV markers in cerebrospinal fluid and the possibility of neurologic disorders associated with HBV infection. The results were as follows. The positivity of HBsAg and. HBV prevalence rate in serum were 6 (12.04) and 37 (74.0%). Thf, number of patient with HBsAg, only anti-HBV and no markers were 6 (12.0%), 31 (62.0%) and 13 (26.0%), respectively. The positivity of HBsAg and HBV prevalence rate in cerebrospinal fluid were 3 (6%) and 18 (36.0%). The number of patient with HBsAg, only anti-HBV and no markers were 6 (100.0%), 12 (38.7%) and 0 (0.0%) respectively. The number of patient with virus associated diseases (VAD) and non virus associated diseases (NVAD) were 26 (52%) and 24 (48%). The HBV prevalence rate in serum of VAD and NVAD groups were 88.5% and 58.3% (p<0.05). The HBV prevalence rate in CSF of VAD and NVAD groups were 53.8% and 16.7% (p<0.05). The HBV prevalence rate in serum and CSF of VAD and NVAD groups were 60.9% and 28.6%. As a conclusion, the HBV markers in the CSF were partially detected at the presence of the HBV markers in serum. The prevalence rate of HBV in the CSF was increased at the HBsAg positive in the serum and the CSF was significantly increased at the VAD group than the NVAD group

JYMS : Journal of Yeungnam Medical Science