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RISS 인기검색어
- 검색키워드
- 저자 : Yasuaki Imajo (검색결과 3 건)
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C5 Palsy of Patients with Proximal-Type Cervical Spondylotic Amyotrophy
Imajo Yasuaki,Nishida Norihiro,Funaba Masahiro,Nagao Yuji,Suzuki Hidenori,Sakai Takashi 대한척추외과학회 2022 Asian Spine Journal Vol.16 No.5
Study Design: An observational cohort study design was adopted in this study.Purpose: This study was designed to investigate preoperative factors that predict poor outcomes following surgery in patients with proximal-type cervical spondylotic amyotrophy (PCSA) using radiological findings.Overview of Literature: We evaluated the preoperative factors associated with poor outcomes using electrophysiological and neurological findings. However, the preoperative factors associated with poor outcomes remained unclear.Methods: Sixty patients with PCSA who underwent surgical treatment of the cervical spine were enrolled. The radiological findings on plain radiographs, computed tomography (CT), and magnetic resonance imaging (MRI) were evaluated. The cervical lordotic angles, C2–C7 sagittal vertical axis (SVA), and T1 slope were assessed on a lateral radiograph in the neutral position. CT was used to assess the width of the intervertebral foramen and the anterior protrusion of the superior articular process on the axial view. MRI was used to determine the number of levels of compression (NLC) and the presence of a high-intensity area in the spinal cord in the T2- weighted midsagittal view. The preoperative and postoperative strengths of the most atrophic muscles were evaluated using manual muscle testing. Improvements in strength were classified as excellent (five grades recovered), good (more than one grade recovered), fair (no improvement), or poor (worsened).Results: The prevalence of C5 palsy was 17% (10/60). Patients with poor outcomes had higher NLC and Δ C2–C7 SVA than patients with excellent, good, and fair outcomes (p =0.015; odds ratio [OR], 5.758; 95% confidence interval [CI], 1.397−23.726 for a change of 10% and p =0.048; OR, 1.068; 95% CI, 0.992−1.141 for a change of 10%, respectively).Conclusions: ΔC2–C7 SVA and NLC may be used as prognostic factors for achieving a poor outcome following surgery in patients with PCSA. More focus is needed on preventing the increase in ΔC2–C7 SVA.
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Tsukasa Kanchiku,Yasuaki Imajo,Hidenori Suzuki,Yuichiro Yoshida,Toshihiko Taguchi,Toshikatsu Tominaga,Koichiro Toyoda 대한척추외과학회 2014 Asian Spine Journal Vol.8 No.4
Study Design: Multicenter prospective study with a crossover design. Purpose: The objective of this study is to compare the efficacy of limaprost alfadex (LP) and elcatonin (EL) for lumbar spinal stenosis (LSS) patients with concurrent osteoporosis. Overview of Literature: It has been increasingly important to improve quality of life by establishing appropriate conservative treatments for LSS patients with concurrent osteoporosis who will presumably continue to increase due to the percentage of the aging elevations, however there is no prospective study. Methods: A total of 19 patients with LSS and concurrent osteoporosis were enrolled in this study. The patients were divided into two groups and compared using a crossover design. The Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ) and short-form (SF)-8 health survey scale were used for clinical evaluations. Results: There was a significant improvement of buttock-leg pain and numbness in the EL group. A significant improvement of impaired walking function was noted for the LP group according to the JOABPEQ while the rest of the items in the JOABPEQ showed no significant differences. The SF-8 health survey revealed that somatic pains and physical summary scores in the EL group and physical functioning and physical summary scores in the LP group tended to improve but not to any statistically significant extents. Conclusions: Concomitant uses of EL may be useful in patients who do not respond satisfactorily to the treatments of LP for 6–8 weeks.
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Normal Values of Diffusion Tensor Magnetic Resonance Imaging Parameters in the Cervical Spinal Cord
Kazuki Chagawa,Shunka Nishijima,Tsukasa Kanchiku,Yasuaki Imajo,Hidenori Suzuki,Yuichiro Yoshida,Toshihiko Taguchi 대한척추외과학회 2015 Asian Spine Journal Vol.9 No.4
Study Design: Prospective study. Purpose: We evaluated the usefulness of diffusion tensor imaging (DTI) in diagnosing patients with cervical myelopathy by determining the accuracy of normal DTI parameter values. Overview of Literature: DTI can visualize white matter tracts in vivo and quantify anisotropy. DTI is known to be more sensitive than conventional magnetic resonance imaging (MRI) in detecting subtle pathological changes of the spinal cord. Methods: A total of 31 normal subjects (13 men and 18 women; age, 23–87 years; mean age, 46.0 years) were included in this study. The patients had no symptoms of myelopathy or radiculopathy. A Philips Achieva 3-Tesla MRI with SE-type Single Shot EPI was used to obtain diffusion tensor images. Apparent diffusion coefficient (ADC) and fractional anisotropy (FA) values were measured as DTI parameters on axial sections of several cervical levels. Subjects were divided into two groups: >40 years (n=16) and ≤40 years (n=15). A paired t-test was used to compare significant differences between the groups. ADC and FA values were most stable on axial sections. Results: For all subjects, mean ADC and FA values were 1.06±0.09×10−3 mm2/sec and 0.68±0.05, respectively. ADC was significantly higher in subjects >40 years of age than in those ≤40 years. There was no significant difference in FA values between the two groups. The mean ADC value was significantly higher in normal subjects >40 years of age than in those ≤40 years. Conclusions: It is important to consider age when evaluating cervical myelopathy by DTI.
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