1.Temporal validation of a clinical prediction rule for distinguishing locomotive syndromes in community-dwelling older adults: A cross-sectional study from the DETECt-L study
Shigeharu TANAKA ; Ryo TANAKA ; Hungu JUNG ; Shunsuke YAMASHINA ; Yu INOUE ; Kazuhiko HIRATA ; Kai USHIO ; Yasunari IKUTA ; Yukio MIKAMI ; Nobuo ADACHI
Osteoporosis and Sarcopenia 2024;10(1):40-44
Objectives:
Clinical prediction rules are used to discriminate patients with locomotive syndrome and may enable early detection. This study aimed to validate the clinical predictive rules for locomotive syndrome in communitydwelling older adults.
Methods:
We assessed the clinical prediction rules for locomotive syndrome in a cross-sectional setting. The age, sex, and body mass index of participants were recorded. Five physical function tests–grip strength, single-leg standing time, timed up-and-go test, and preferred and maximum walking speeds–were measured as predic tive factors. Three previously developed clinical prediction models for determining the severity of locomotive syndrome were assessed using a decision tree analysis. To assess validity, the sensitivity, specificity, likelihood ratio, and post-test probability of the clinical prediction rules were calculated using receiver operating charac teristic curve analysis for each model.
Results:
Overall, 280 older adults were included (240 women; mean age, 74.8 ± 5.2 years), and 232 (82.9%), 68 (24.3%), and 28 (10.0%) participants had locomotive syndrome stages ≥ 1, ≥ 2, and = 3, respectively. The areas under the receiver operating characteristics curves were 0.701, 0.709, and 0.603, in models 1, 2, and 3, respectively. The accuracies of models 1 and 2 were moderate.
Conclusions
These findings indicate that the models are reliable for community-dwelling older adults.
2.Foramen Magnum Decompression with Outer Dura Matter Layer Resection for Chiari Type I Malformation: Factors Correlated with Syrinx Reduction
Toshiaki MARUYAMA ; Toshio NAKAMAE ; Naosuke KAMEI ; Nobuhiro TANAKA ; Yasushi FUJIWARA ; Takahiro HARADA ; Nobuo ADACHI
Asian Spine Journal 2023;17(2):365-372
Methods:
We enrolled patients who underwent microscopic FMD with outer dural layer resection for CMI. The distance from the tip of the cerebellar tonsil to the C2 vertebral endplate on sagittal magnetic resonance imaging (MRI) was defined as the tonsillar distance (TD). Patients who showed a >20% syrinx diameter reduction on the 1-year follow-up MRI were defined as the syrinx reduction group while the others were categorized in the syrinx nonreduction group. Patients with syringomyelia were categorized into the clinically improved and unimproved groups using the Chicago Chiari Outcome Scale. The imaging and clinical parameters were evaluated pre- and postoperatively.
Results:
This study included 25 patients of whom 19 (76.0%) had syringomyelia. At the 1-year follow-up, the syrinx diameter had decreased in 11 patients (57.8%). The increased TD significantly differed between the syrinx reduction and nonreduction groups. At the 1-year follow-up, 12 and seven patients with syringomyelia were categorized into the clinically improved and unimproved groups, respectively. The clinically improved and unimproved groups showed significant differences in the mean age and increased TD.
Conclusions
Postoperative syrinx reduction was significantly correlated with the upward shifting of the cerebellar tonsil in patients with CMI. Our quantitative evaluation of the alterations in hindbrain position after FMD was easily performed and reflects the clinical outcomes.
3.Physical Signs and Clinical Features of Cervical Myelopathy in Elderly Patients, Especially 80 Years or Older: Comparison of 100 Consecutive Operative Cases across Three Age Groups
Takahiko HAMASAKI ; Toshio NAKAMAE ; Naosuke KAMEI ; Yasushi FUJIWARA ; John M. RHEE ; Nobuhiro TANAKA ; Yoshinori FUJIMOTO ; Nobuo ADACHI ; Shoji SHIMOSE
Asian Spine Journal 2023;17(5):916-921
Methods:
We evaluated 100 consecutive surgical patients with CM and divided them into the following groups: 80s (34 patients; mean age, 83.9 years), 70s (33 patients; mean age, 73.9 years), and 69 or younger (33 patients; mean age, 60.9 years). The clinical symptoms and physical signs were evaluated and recorded.
Results:
Although the recovery rate decreased with increasing age, all groups demonstrated a significant improvement in clinical symptoms relative to preoperative values. The Hoffman sign and hyperreflexia of the triceps tendon were, respectively, present in 82% and 88% of patients in the 80s group, 74% and 64% of those in the 70s group, and 69% and 82% of those in the 69 or younger group, with no significant difference among the groups. In contrast, the rates of hyperreflexia of the patellar and Achilles tendons were, respectively, 59% and 32% in the 80s group, 85% and 48% in the 70s group, and 91% and 70% in the 69 or younger group, with significant differences.
Conclusions
The positivity rate of the lower extremity hyperreflexia decreased significantly with increasing age in patients with CM. The absence of hyperreflexia, particularly lower extremity, is not uncommon in elderly patients with suspected CM.
4.The prevalence of psychological distress during pregnancy in Miyagi Prefecture for 3 years after the Great Eas t Japan Earthquake.
Kaou TANOUE ; Zen WATANABE ; Hidekazu NISHIGORI ; Noriyuki IWAMA ; Michihiro SATOH ; Takahisa MURAKAMI ; Kousuke TANAKA ; Satomi SASAKI ; Kasumi SAKURAI ; Mami ISHIKURO ; Taku OBARA ; Masatoshi SAITO ; Junichi SUGAWARA ; Nozomi TATSUTA ; Shinichi KURIYAMA ; Takahiro ARIMA ; Kunihiko NAKAI ; Nobuo YAEGASHI ; Hirohito METOKI
Environmental Health and Preventive Medicine 2021;26(1):27-27
BACKGROUND:
To examine changes in psychological distress prevalence among pregnant women in Miyagi Prefecture, which was directly affected by the Great East Japan Earthquake and tsunami, and compare it with the other, less damaged areas of Japan.
METHODS:
This study was conducted in conjunction with the Japan Environment and Children`s Study. We examined 76,152 pregnant women including 8270 in Miyagi Regional Center and 67,882 in 13 other regional centers from the all-birth fixed data of the Japan Environment and Children's Study. We then compared the prevalence and risk of distress in women in Miyagi Regional Center and women in the 13 regional centers for 3 years after the disaster.
RESULTS:
Women in the Miyagi Regional Center suffered more psychological distress than those in the 13 regional centers: OR 1.38 (95% CI, 1.03-1.87) to 1.92 (95% CI, 1.42-2.60). Additionally, women in the inland area had a consistently higher prevalence of psychological distress compared to those from the 13 regional centers: OR 1.67 (95% CI, 1.18-2.38) to 2.19 (95% CI, 1.60-2.99).
CONCLUSIONS
The lack of pre-disaster data in the Japan Environment and Children's Study made it impossible to compare the incidence of psychological distress before and after the March 2011 Great East Japan Earthquake. However, 3 years after the Great East Japan Earthquake, the prevalence of pregnant women with psychological distress did not improve in Miyagi Regional Center. Further, the prevalence of mental illness in inland areas was consistently higher than that in the 13 regional centers after the disaster.
Adolescent
;
Adult
;
Disasters
;
Earthquakes
;
Female
;
Humans
;
Japan/epidemiology*
;
Pregnancy
;
Pregnancy Complications/psychology*
;
Pregnant Women/psychology*
;
Prevalence
;
Psychological Distress
;
Tsunamis
;
Young Adult
5.Novel Hybrid Hydroxyapatite Spacers Ensure Sufficient Bone Bonding in Cervical Laminoplasty
Nobuhiro TANAKA ; Kazuyoshi NAKANISHI ; Naosuke KAMEI ; Toshio NAKAMAE ; Shinji KOTAKA ; Yoshinori FUJIMOTO ; Mitsuo OCHI ; Nobuo ADACHI
Asian Spine Journal 2018;12(6):1078-1084
STUDY DESIGN: Prospective observational study. PURPOSE: This prospective analysis aimed to evaluate the efficacy and bone-bonding rate of hybrid hydroxyapatite (HA) spacers in expansive laminoplasty. OVERVIEW OF LITERATURE: Various types of spacers or plates have been developed for expansive laminoplasty. METHODS: Expansive open-door laminoplasty was performed in 146 patients with cervical myelopathy; 450 hybrid HA spacers and 41 autogenous bone spacers harvested from the spinous processes were grafted into the opened side of each lamina. The patients were followed up using computed tomography (CT), and their bone-bonding rates for hybrid HA and autogenous spacers, bone-fusion rates of the hinges of the laminae, and complications associated with the implants were then examined. RESULTS: Clinical symptoms significantly improved in all patients, and no major complications related to the procedure were noted. The hybrid HA spacers exhibited sufficient bone bonding on postoperative CT. The hinges completely fused in over 95% patients within 1 year of the procedure. Only 4 spacers (0.9%) developed lamina sinking, and most expanded laminae maintained their positions without sinking or floating throughout the follow-up period. CONCLUSIONS: Hybrid HA spacers contributed to high bone-fusion rates of the spacers and hinges of the laminae, and no complications were associated with their use. Cervical laminoplasty with these spacers is safe and simple, and it yields sufficient fixation strength while ensuring sufficient bone bonding during the immediate postoperative period.
Cervical Vertebrae
;
Durapatite
;
Female
;
Follow-Up Studies
;
Humans
;
Laminoplasty
;
Observational Study
;
Postoperative Period
;
Prospective Studies
;
Spinal Cord Diseases
;
Transplants
6.Characterization of the Body Constituent Patterns for Symptomatic Acute Cerebral Infarction Using qi-ketsu-sui Score
Yoshikazu MIZOI ; Koichiro TANAKA ; Shinichiro UEDA ; Hideyuki ISOBE ; Kazuhiko NARA ; Koki CHIBA ; Nobuo ARAKI ; Toshimasa YAMAMOTO
Kampo Medicine 2018;69(4):321-327
We evaluated body constituent patterns of 130 consecutive patients with symptomatic acute cerebral infarction. They comprise lacunar infarction (n = 47), atherothrombotic infarction (n = 70), cardiogenic embolism (n = 11), and other type of infarction (n = 2). We compared body constituent patterns between them and 93 consecutive patients with other neurological diseases of the same age. We used qi-ketsu-sui scores to evaluate body constituent patterns in all cases. Qi-ketsu-sui scores measure six factors : qi deficiency (kikyo), qi stagnation (kiutsu), qi counterflow (kigyaku), blood deficiency (kekkyo), blood stasis (oketsu), and fluid retention (suitai). As a result of multivariate model analysis, symptomatic acute cerebral infarction had the largest weight of blood stasis and an adjusted odds ratio (95% confidence interval) was 4.6 (2.45-8.91). Even when gender as a confounding factor was adjusted by stratified analysis, adjusted odds ratios of blood stasis (95% confidence interval) were 7.46 (3.02-20.25) for males and 2.63 (1.02-7.11) for females, and those were maximum. The point (median, interquartile range) of blood stasis was more severe in acute cerebral infarction (24 points, 18-33 points) than other neurological diseases (16 points, 9-23 points). We examined relationships between body constituent patterns and clinical disease type, severity at hospitalization, and sex in patients with symptomatic acute cerebral infarction. Ratio of blood stasis was the largest in any clinical disease type, severity and sex. Blood stasis seemed to be the most important factor in symptomatic acute cerebral infarction.
7.Rotational Acetabular Osteotomy.
Yuji YASUNAGA ; Jiro FUJII ; Ryuji TANAKA ; Shinji YASUHARA ; Takuma YAMASAKI ; Nobuo ADACHI ; Mitsuo OCHI
Clinics in Orthopedic Surgery 2017;9(2):129-135
Hip dysplasia is the most common cause of secondary osteoarthritis (OA). To prevent the early onset of secondary OA, Nishio's transposition osteotomy, Steel's triple osteotomy, Eppright's dial osteotomy, Wagner's spherical acetabular osteotomy, Tagawa's rotational acetabular osteotomy (RAO), and Ganz' periacetabular osteotomy (PAO) have been proposed. PAO and RAO are now commonly used in surgical treatment of symptomatic acetabular dysplasia in Europe, North America, and Asia. The aim of this paper is to present the followings: the patient selection criteria for RAO; the surgical technique of RAO; the long-term outcome of RAO; and the future perspectives.
Acetabulum*
;
Asia
;
Europe
;
Hip Dislocation
;
North America
;
Osteoarthritis
;
Osteotomy*
;
Patient Selection
8.Team–Based Learning at the Duke–NUS Graduate Medical School Singapore
Kazuki Takada ; Toshiya Suzuki ; Keiichi Akita ; Nobuo Nara ; Yujiro Tanaka
Medical Education 2011;42(3):153-157
1)We visited the Duke–NUS Graduate Medical School Singapore to learn the administration and management of, and the theory behind, team–based learning (TBL), a candidate educational method to replace the problem–based learning tutorial.
2)TBL motivates students to prepare for and engage in discussion. The grading of performance in TBL, certain characteristics of assignments, and the use of peer evaluation all promote individual and group accountability for learning.
3)To obtain the maximum overall benefit from TBL and to exploit group dynamics for effective learning, well–designed assignments are the key.
9.Comparative Analysis of Faculty Development in Japanese Medical Schools from 2003 through 2005
Nobuo NARA ; Masaaki ITO ; Eiji GOTOH ; Nobuhiko SAITO ; Yujiro TANAKA ; Masahiro TANABE ; Osamu FUKUSHIMA ; Saburo HORIUCHI
Medical Education 2007;38(4):275-278
1) The faculty development at each medical school from 2003 through 2005 was analysed.
2) The major themes in faculty development were problem based learning, tutorial, computer based testing, and clinical training.
3) Faculty development is considered an effective way to enhance the contributions of faculty members to medical education.
10.Effects of walking habit on aerobic work capacity and vital age in middle-aged and elderly walkers.
NOBUO TAKESHIMA ; KIYOJI TANAKA ; FUMIO KOBAYASHI ; TAKEMASA WATANABE ; MASATOSHI NAKATA
Japanese Journal of Physical Fitness and Sports Medicine 1996;45(3):387-393
The purpose of this investigation was to determine the effects of daily walking on aerobic work capacity, vital age and other fitness components in middle-aged and elderly walkers. The subjects were thirty-six walkers (average 65.0±8.0 yr, 51-80 yr), whose training period averaged 13.5±9.0 yr. The walkers were significantly greater in maximal oxygen uptake (VO2max), and oxygen uptake at the lactate threshold (VO2LT), and were 6.5 yr younger in vital age (VA) than sedentary middle-aged and elderly. These findings suggest that middle-aged and elderly walkers have more favorable profile of aerobic work capacity and of health status when compared to sedentary persons.


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