論文 - 中島　宏彰

Neurological recovery rate and predictive factors of incomplete AIS grade C spinal cord injury in the older aged population 査読有り

Tamai, K; Terai, H; Nakamura, H; Yokogawa, N; Sasagawa, T; Nakashima, H; Segi, N; Ito, S; Funayama, T; Eto, F; Yamaji, A; Watanabe, K; Yamane, J; Takeda, K; Furuya, T; Yunde, A; Nakajima, H; Yamada, T; Hasegawa, T; Terashima, Y; Hirota, R; Suzuki, H; Imajo, Y; Ikegami, S; Uehara, M; Tonomura, H; Sakata, M; Hashimoto, K; Onoda, Y; Kawaguchi, K; Haruta, Y; Suzuki, N; Kato, K; Uei, H; Sawada, H; Nakanishi, K; Misaki, K; Kuroda, A; Inoue, G; Kakutani, K; Kakiuchi, Y; Kiyasu, K; Tominaga, H; Tokumoto, H; Iizuka, Y; Takasawa, E; Akeda, K; Takegami, N; Funao, H; Oshima, Y; Kaito, T; Sakai, D; Yoshii, T; Ohba, T; Otsuki, B; Seki, S; Miyazaki, M; Ishihara, M; Okada, S; Imagama, S; Kato, S

SPINAL CORD   62 巻 ( 4 ) 頁： 149 - 155   2024年4月

　詳細を見る

記述言語：英語   出版者・発行元：Spinal Cord  

Study design: Retrospective cohort study. Objectives: To define the prognosis and predictive factors for neurological improvement in older patients with incomplete spinal cord injury (SCI) of American Spinal Injury Association Impairment Scale grade C (AIS-C). Settings: Multi-institutions in Japan. Methods: We included patients aged ≥65 years with traumatic SCI of AIS-C who were treated conservatively or surgically with >3 follow-up months. To identify factors related to neurological improvement, patients were divided into three groups according to their neurological status at the final follow-up, with univariate among-group comparisons of demographics, radiographic, and therapeutic factors. Significant variables were included in the multivariate logistic regression analysis. Results: Overall, 296 older patients with SCI of AIS-C on admission were identified (average age: 75.2 years, average follow-up: 18.7 months). Among them, 190 (64.2%) patients improved to AIS-D and 21 (7.1%) patients improved to AIS-E at final follow-up. There were significant among-group differences in age (p = 0.026), body mass index (p = 0.007), status of pre-traumatic activities of daily living (ADL) (p = 0.037), and serum albumin concentrations (p = 0.011). Logistic regression analysis showed no significant differences in variables in the stratified group of patients who improved to AIS-D. Meanwhile, serum albumin was a significant variable in patients who improved to AIS-E (p = 0.026; OR: 6.20, pre-traumatic ADL was omitted due to data skewness). Conclusions: Most older patients with incomplete AIS-C SCI demonstrated at least 1 grade of neurological improvement. However, <10% of patients achieved complete recovery. Key predictors of complete recovery were high serum albumin levels on admission and independent pre-traumatic ADL. Sponsorship: No funding was received for this study.

DOI： 10.1038/s41393-024-00963-0

Web of Science

Scopus

PubMed

Obesity Is Associated with Asymptomatic Vertebral Fractures: A Yakumo Study 査読有り Open Access

Miyairi, Y; Nakashima, H; Ito, S; Segi, N; Ouchida, J; Oishi, R; Yamauchi, I; Machino, M; Seki, T; Ishizuka, S; Takegami, Y; Hasegawa, Y; Imagama, S

JOURNAL OF CLINICAL MEDICINE   13 巻 ( 7 )   2024年4月

　詳細を見る

記述言語：英語   出版者・発行元：Journal of Clinical Medicine  

(1) Background: Patients with primary vertebral fracture (VF) are at high risk of re-fracture and mortality. However, approximately two-thirds of patients with VFs receive minimal clinical attention. (2) Methods: The current study aimed to investigate the factors associated with asymptomatic VFs in middle-aged and elderly individuals who underwent resident health examinations. (3) Results: The current study included 217 participants aged > 50 years. VFs were diagnosed based on lateral radiographic images using Genant’s semiquantitative (SQ) method. The participants were divided into non-VF (N; SQ grade 0) and asymptomatic VF (F; SQ grades 1–3) groups. Data on body composition, blood tests, quality of life measures, and radiographic parameters were assessed. A total of 195 participants were included in the N group (mean age, 64.8 ± 7.8 years), and 22 were in the F group (mean age, 66.1 ± 7.9 years). The F group had a significantly higher body mass index (BMI), body fat percentage (BF%), and proportion of patients with knee osteoarthritis (KOA) than the N group. The F group had a significantly higher knee joint pain visual analog scale (VAS) score and painDETECT score than the N group. Logistic regression analysis showed that BF% was associated with asymptomatic VFs. (4) Conclusions: Middle-aged and elderly individuals with asymptomatic VF presented with high BMIs, BF%, and incidence of KOA.

DOI： 10.3390/jcm13072063

Open Access

Web of Science

Scopus

PubMed

地域在住高齢者の転倒と転倒予防〜ロコモティブシンドロームおよび脊椎グローバルアライメントの観点から〜

世木 直喜, 中島 宏彰, 伊藤 定之, 大内田 隼, 飯田 浩貴, 竹上 靖彦, 田中 智史, 両角 正義, 村本 明生, 小林 和克, 石塚 真哉, 関 泰輔, 長谷川 幸治, 今釜 史郎

日本転倒予防学会誌   10 巻 ( 1 ) 頁： 19 - 25   2024年3月

　詳細を見る

記述言語：日本語   出版者・発行元：日本転倒予防学会  

DOI： 10.11335/tentouyobou.10.1_19

CiNii Research

Impact of malnutrition on mortality and neurological recovery of older patients with spinal cord injury 査読有り Open Access

Tamai, K; Terai, H; Nakamura, H; Yokogawa, N; Sasagawa, T; Nakashima, H; Segi, N; Ito, S; Funayama, T; Eto, F; Yamaji, A; Watanabe, K; Yamane, J; Takeda, K; Furuya, T; Yunde, A; Nakajima, H; Yamada, T; Hasegawa, T; Terashima, Y; Hirota, R; Suzuki, H; Imajo, Y; Ikegami, S; Uehara, M; Tonomura, H; Sakata, M; Hashimoto, K; Onoda, Y; Kawaguchi, K; Haruta, Y; Suzuki, N; Kato, K; Uei, H; Sawada, H; Nakanishi, K; Misaki, K; Kuroda, A; Inoue, G; Kakutani, K; Kakiuchi, Y; Kiyasu, K; Tominaga, H; Tokumoto, H; Iizuka, Y; Takasawa, E; Akeda, K; Takegami, N; Funao, H; Oshima, Y; Kaito, T; Sakai, D; Yoshii, T; Ohba, T; Otsuki, B; Seki, S; Miyazaki, M; Ishihara, M; Okada, S; Imagama, S; Kato, S

SCIENTIFIC REPORTS   14 巻 ( 1 ) 頁： 5853   2024年3月

　詳細を見る

記述言語：英語   出版者・発行元：Scientific Reports  

This retrospective cohort study established malnutrition’s impact on mortality and neurological recovery of older patients with cervical spinal cord injury (SCI). It included patients aged ≥ 65 years with traumatic cervical SCI treated conservatively or surgically. The Geriatric Nutritional Risk Index was calculated to assess nutritional-related risk. Overall, 789 patients (mean follow-up: 20.1 months) were examined and 47 had major nutritional-related risks on admission. One-year mortality rate, median survival time, neurological recovery, and activities of daily living (ADL) at 1 year post-injury were compared between patients with major nutrition-related risk and matched controls selected using 1:2 propensity score matching to adjust for age, pre-traumatic neurological impairment, and activity. In the Kaplan–Meier analysis, the median survival times were 44.9 and 76.5 months for patients with major nutrition-related risk and matched controls, respectively (p = 0.015). Matched controls had more individuals with a neurological improvement of American Spinal Injury Association Impairment Scale ≥ 1 grade (p = 0.039) and independence in ADL at 1 year post-injury than patients with major nutrition-related risk (p < 0.05). In conclusion, 6% of older patients with cervical SCI had major nutrition-related risks; they showed a significantly higher 1 year mortality rate, shorter survival time, poorer neurological improvement, and lower ADL at 1 year post-injury than matched controls.

DOI： 10.1038/s41598-024-56527-y

Open Access

Web of Science

Scopus

PubMed

A Longitudinal Study on the Effect of Exercise Habits on Locomotive Syndrome and Quality of Life during the Coronavirus Disease 2019 Pandemic 査読有り Open Access

Ito, S; Nakashima, H; Segi, N; Ouchida, J; Oishi, R; Yamauchi, I; Ishizuka, S; Takegami, Y; Seki, T; Hasegawa, Y; Imagama, S

JOURNAL OF CLINICAL MEDICINE   13 巻 ( 5 )   2024年3月

　詳細を見る

記述言語：英語   出版者・発行元：Journal of Clinical Medicine  

During the COVID-19 pandemic, this study investigated the potential of exercise habits to improve quality of life (QOL) and prevent locomotive syndrome (LS) in residents of Yakumo-cho, Hokkaido, Japan. Participants from the 2018 health checkup were surveyed in February 2022, focusing on 200 respondents. These individuals were divided based on their 2018 exercise habits (at least 1 h per week): the exercise group (E group) and the non-exercise group (N group), further categorized in 2022 into the 2022E and 2022N groups. QOL was measured using the SF-36 (physical functioning, general health, physical role, physical pain, vitality, social functioning, emotional role, and mental health) and EuroQoL 5-dimension 5-level questionnaires (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression), and LS was assessed with the 25-question geriatric locomotive function scale. These showed no significant change in exercise habits from 2018 to 2022. In the non-LS group, the 2022E group had higher vitality and emotional role functioning scores compared to the 2022N group. For those with LS, the 2022E group reported less physical pain. Notably, the LS incidence was significantly lower in the 2022E group. This study concludes that consistent exercise habits positively impact QOL and reduce the LS risk, underscoring the importance of regular physical activity, especially during challenging times like a pandemic. These findings highlight the broader benefits of maintaining exercise routines for public health, particularly in periods of global health crises. Based on our findings, we recommend that people continue to exercise at least one hour per week to prevent LS.

DOI： 10.3390/jcm13051385

Open Access

Web of Science

Scopus

PubMed

Calcitriol ameliorates motor de fi cits and prolongs survival of<i> Chrne</i>-de fi cient mouse, a model for congenital myasthenic syndrome, by inducing Rspo2 査読有り Open Access

Ohkawara, B; Tomita, H; Inoue, T; Zhang, SC; Kanbara, S; Koshimizu, H; Miyasaka, Y; Takeda, JI; Nishiwaki, H; Nakashima, H; Ito, M; Masuda, A; Ishiguro, N; Ogi, T; Ohno, T; Imagama, S; Ohno, K

NEUROTHERAPEUTICS   21 巻 ( 2 ) 頁： e00318   2024年3月

　詳細を見る

記述言語：英語   出版者・発行元：Neurotherapeutics  

Signal transduction at the neuromuscular junction (NMJ) is compromised in a diverse array of diseases including congenital myasthenic syndromes (CMS). Germline mutations in CHRNE encoding the acetylcholine receptor (AChR) ε subunit are the most common cause of CMS. An active form of vitamin D, calcitriol, binds to vitamin D receptor (VDR) and regulates gene expressions. We found that calcitriol enhanced MuSK phosphorylation, AChR clustering, and myotube twitching in co-cultured C2C12 myotubes and NSC34 motor neurons. RNA-seq analysis of co-cultured cells showed that calcitriol increased the expressions of Rspo2, Rapsn, and Dusp6. ChIP-seq of VDR revealed that VDR binds to a region approximately 15 ​kbp upstream to Rspo2. Biallelic deletion of the VDR-binding site of Rspo2 by CRISPR/Cas9 in C2C12 myoblasts/myotubes nullified the calcitriol-mediated induction of Rspo2 expression and MuSK phosphorylation. We generated Chrne knockout (Chrne KO) mouse by CRISPR/Cas9. Intraperitoneal administration of calcitriol markedly increased the number of AChR clusters, as well as the area, the intensity, and the number of synaptophysin-positive synaptic vesicles, in Chrne KO mice. In addition, calcitriol ameliorated motor deficits and prolonged survival of Chrne KO mice. In the skeletal muscle, calcitriol increased the gene expressions of Rspo2, Rapsn, and Dusp6. We propose that calcitriol is a potential therapeutic agent for CMS and other diseases with defective neuromuscular signal transmission.

DOI： 10.1016/j.neurot.2024.e00318

Open Access

Web of Science

Scopus

PubMed

An Update of a Clinical Practice Guideline for the Management of Patients With Acute Spinal Cord Injury: Recommendations on the Role and Timing of Decompressive Surgery 査読有り Open Access

Fehlings, MG; Tetreault, LA; Hachem, L; Evaniew, N; Ganau, M; Mckenna, SL; Neal, CJ; Nagoshi, N; Rahimi-Movaghar, V; Aarabi, B; Hofstetter, CP; Wengel, VT; Nakashima, H; Martin, AR; Kirshblum, S; Pinto, RR; Marco, RAW; Wilson, JR; Kahn, DE; Newcombe, VFJ; Zipser, CM; Douglas, S; Kurpad, SN; Lu, Y; Saigal, R; Samadani, U; Arnold, PM; Hawryluk, GWJ; Skelly, AC; Kwon, BK

GLOBAL SPINE JOURNAL   14 巻 ( 3_SUPPL ) 頁： 174S - 186S   2024年3月

　詳細を見る

記述言語：英語   出版者・発行元：Global Spine Journal  

Study Design: Clinical practice guideline development. Objectives: Acute spinal cord injury (SCI) can result in devastating motor, sensory, and autonomic impairment; loss of independence; and reduced quality of life. Preclinical evidence suggests that early decompression of the spinal cord may help to limit secondary injury, reduce damage to the neural tissue, and improve functional outcomes. Emerging evidence indicates that “early” surgical decompression completed within 24 hours of injury also improves neurological recovery in patients with acute SCI. The objective of this clinical practice guideline (CPG) is to update the 2017 recommendations on the timing of surgical decompression and to evaluate the evidence with respect to ultra-early surgery (in particular, but not limited to, <12 hours after acute SCI). Methods: A multidisciplinary, international, guideline development group (GDG) was formed that consisted of spine surgeons, neurologists, critical care specialists, emergency medicine doctors, physical medicine and rehabilitation professionals, as well as individuals living with SCI. A systematic review was conducted based on accepted methodological standards to evaluate the impact of early (within 24 hours of acute SCI) or ultra-early (in particular, but not limited to, within 12 hours of acute SCI) surgery on neurological recovery, functional outcomes, administrative outcomes, safety, and cost-effectiveness. The GRADE approach was used to rate the overall strength of evidence across studies for each primary outcome. Using the “evidence-to-recommendation” framework, recommendations were then developed that considered the balance of benefits and harms, financial impact, patient values, acceptability, and feasibility. The guideline was internally appraised using the Appraisal of Guidelines for Research and Evaluation (AGREE) II tool. Results: The GDG recommended that early surgery (≤24 hours after injury) be offered as the preferred option for adult patients with acute SCI regardless of level. This recommendation was based on moderate evidence suggesting that patients were 2 times more likely to recover by ≥ 2 ASIA Impairment Score (AIS) grades at 6 months (RR: 2.76, 95% CI 1.60 to 4.98) and 12 months (RR: 1.95, 95% CI 1.26 to 3.18) if they were decompressed within 24 hours compared to after 24 hours. Furthermore, patients undergoing early surgery improved by an additional 4.50 (95% 1.70 to 7.29) points on the ASIA Motor Score compared to patients undergoing surgery after 24 hours post-injury. The GDG also agreed that a recommendation for ultra-early surgery could not be made on the basis of the current evidence because of the small sample sizes, variable definitions of what constituted ultra-early in the literature, and the inconsistency of the evidence. Conclusions: It is recommended that patients with an acute SCI, regardless of level, undergo surgery within 24 hours after injury when medically feasible. Future research is required to determine the differential effectiveness of early surgery in different subpopulations and the impact of ultra-early surgery on neurological recovery. Moreover, further work is required to define what constitutes effective spinal cord decompression and to individualize care. It is also recognized that a concerted international effort will be required to translate these recommendations into policy.

DOI： 10.1177/21925682231181883

Open Access

Web of Science

Scopus

PubMed

An appropriate method for predicting the femoral angle on whole-body X-ray images from full-spine X-ray images 査読有り

Ito, K; Nakashima, H; Kagami, Y; Ouchida, J; Satake, K; Tsushima, M; Tomita, H; Ode, Y; Nagatani, Y; Imagama, S; Kanemura, T

JOURNAL OF ORTHOPAEDIC SCIENCE   29 巻 ( 2 ) 頁： 489 - 493   2024年3月

　詳細を見る

記述言語：英語   出版者・発行元：Journal of Orthopaedic Science  

Introduction: The importance of lower-limb compensation in patients with spinal malalignment due to spinal pathologies has been emphasized. The latest whole-body X-ray images (WBX) have enabled evaluations of whole-body alignment from head to toe. However, WBX is still not commonly available. Thus, the present study aimed to examine an alternative measurement method of the femoral angle on usual full-spine X-ray images (FSX) that approximates the femoral angle on WBX. Methods: A total of 50 patients (age, 52.8 ± 25.3 years; female, n = 26; male, n = 24) underwent WBX and FSX. The following parameters were measured on lateral view X-rays: WBX and FSX femoral angle (angle between the femoral axis and a perpendicular line); FSX femoral distance (distance from the center of femoral head to the distal femur on FSX); WBX intersection length (length between the center of the femoral head and the intersection point [the point at which the line connecting the center of the femoral head and the midpoint of the femoral condyle intersects the center line of the femur] on WBX). Results: The WBX femoral angle, and FSX femoral angle were 0.16 ± 4.2°, and −0.53 ± 4.1°, respectively. The FSX femoral distance was 102.7 ± 41.1 mm. An ROC curve analysis revealed that the cut-off value of the FSX femoral distance associated with minimal difference in the WBX and FSX femoral angles (<3°) was 73 mm (sensitivity 83.3%, specificity 87.5%, AUC 0.80). The WBX intersection length was 105.3 ± 27.3 mm. Conclusion: To calculate the femoral angle on FSX that approximates the WBX femoral angle, the femoral distance on FSX ≥73 mm is preferable. We suggest using the FSX femoral distance within the range of 80 mm–130 mm as a simple numerical value that meets all criteria.

DOI： 10.1016/j.jos.2023.02.007

Web of Science

Scopus

PubMed

Influence of the timing of surgery forcervical spinal cord injury without bone injury in the elderly: A retrospective multicenter study 査読有り Open Access

Nori, S; Watanabe, K; Takeda, K; Yamane, J; Kono, H; Yokogawa, N; Sasagawa, T; Ando, K; Nakashima, H; Segi, N; Funayama, T; Eto, F; Yamaji, A; Furuya, T; Yunde, A; Nakajima, H; Yamada, T; Hasegawa, T; Terashima, Y; Hirota, R; Suzuki, H; Imajo, Y; Ikegami, S; Uehara, M; Tonomura, H; Sakata, M; Hashimoto, K; Onoda, Y; Kawaguchi, K; Haruta, Y; Uei, H; Sawada, H; Nakanishi, K; Misaki, K; Terai, H; Tamai, K; Shirasawa, E; Inoue, G; Kiyasu, K; Iizuka, Y; Takasawa, E; Funao, H; Kaito, T; Yoshii, T; Ishihara, M; Okada, S; Imagama, S; Kato, S

JOURNAL OF ORTHOPAEDIC SCIENCE   29 巻 ( 2 ) 頁： 480 - 485   2024年3月

　詳細を見る

記述言語：英語   出版者・発行元：Journal of Orthopaedic Science  

Background: Although previous studies have demonstrated the advantages of early surgery for traumatic spinal cord injury (SCI), the appropriate surgical timing for cervical SCIs (CSCIs) without bone injury remains controversial. Here, we investigated the influence of relatively early surgery within 48 h of injury on the neurological recovery of elderly patients with CSCI and no bone injury. Methods: In this retrospective multicenter study, we reviewed data from 159 consecutive patients aged ≥65 years with CSCI without bone injury who underwent surgery in participating centers between 2010 and 2020. Patients were followed up for at least 6 months following CSCI. We divided patients into relatively early (≤48 h after CSCI, n = 24) and late surgery (>48 h after CSCI, n = 135) groups, and baseline characteristics and neurological outcomes were compared between them. Multivariate analysis was performed to identify factors associated with neurological recovery. Results: The relatively early surgery group demonstrated a lower prevalence of cardiac disease, poorer baseline American Spinal Injury Association (ASIA) impairment scale grade, and lower baseline ASIA motor score (AMS) than those of the late surgery group (P < 0.030, P < 0.001, and P < 0.001, respectively). Although the AMS was lower in the relatively early surgery group at 6 months following injury (P = 0.001), greater improvement in this score from baseline to 6-months post injury was observed (P = 0.010). Multiple linear regression analysis revealed that relatively early surgery did not affect postoperative improvement in AMS, rather, lower baseline AMS was associated with better AMS improvement (P < 0.001). Delirium (P = 0.006), pneumonia (P = 0.030), and diabetes mellitus (P = 0.039) negatively influenced postoperative improvement. Conclusions: Although further validation by future studies is required, relatively early surgery did not show a positive influence on neurological recovery after CSCI without bone injury in the elderly.

DOI： 10.1016/j.jos.2023.01.004

Web of Science

Scopus

PubMed

The anatomical relationship between the celiac artery and the median arch ligament in degenerative spinal surgery 査読有り

Kagami, Y; Nakashima, H; Ito, K; Satake, K; Tsushima, M; Ouchida, J; Morita, Y; Ode, Y; Segi, N; Imagama, S; Kanemura, T

JOURNAL OF ORTHOPAEDIC SCIENCE   29 巻 ( 2 ) 頁： 502 - 507   2024年3月

　詳細を見る

担当区分：責任著者   記述言語：英語   出版者・発行元：Journal of Orthopaedic Science  

Background: This study aimed to characterize the anatomical relationship between the spine, the celiac artery (CA), and the median arcuate ligament using preoperative contrast-enhanced computed tomography (CT) images of patients with spinal deformity who underwent surgical correction. Methods: This retrospective study included 81 consecutive patients (34 males, 47 females; average age: 70.2 years). The spinal level at which the CA originated, the diameter, extent of stenosis, and calcification were determined using CT sagittal images. Patients were divided into two groups: CA stenosis group and non-stenosis group. Factors associated with stenosis were examined. Results: CA stenosis was observed in 17 (21%) patients. CA stenosis group had significantly higher body mass index (24.9 ± 3.9 vs. 22.7 ± 3.7, p = 0.03). In the CA stenosis group, J-type CA (upward angling of the course by more than 90° immediately after descending) was more frequently observed (64.7% vs. 18.8%, p < 0.001). The CA stenosis group had lower pelvic tilt (18.6 ± 6.7 vs. 25.1 ± 9.9, p = 0.02) than non-stenosis group. Conclusions: High BMI, J-type, and shorter distance between CA and MAL were risk factors for CA stenosis in this study. Patients with high BMI undergoing fixation of multiple intervertebral corrective fusions at the thoracolumbar junction should undergo preoperative CT evaluation of the anatomy of CA to assess the poteitial risk of celiac artery compression syndrome.

DOI： 10.1016/j.jos.2023.02.015

Web of Science

Scopus

PubMed

特集 整形外科領域における医療安全最前線 各論 脊椎脊髄手術を安全に施行するための術中脊髄モニタリング

世木 直喜, 中島 宏彰, 今釜 史郎

関節外科　基礎と臨床   43 巻 ( 2 ) 頁： 168 - 176   2024年2月

　詳細を見る

出版者・発行元：メジカルビュー社  

DOI： 10.18885/jjs.0000001669

CiNii Research

Cellular senescence is associated with osteonecrosis of the femoral head while mesenchymal stem cell conditioned medium inhibits bone collapse 査読有り Open Access

Okamoto, M; Nakashima, H; Sakai, K; Takegami, Y; Osawa, Y; Watanabe, J; Ito, S; Hibi, H; Imagama, S

SCIENTIFIC REPORTS   14 巻 ( 1 ) 頁： 3329   2024年2月

　詳細を見る

記述言語：英語   出版者・発行元：Scientific Reports  

Osteonecrosis of the femoral head (ONFH) is a type of ischemic osteonecrosis that causes pain, loss of function, and femoral head collapse. Here, we analyzed samples of femoral heads excised from patients with ONFH to clarify the relationship between ischemic osteonecrosis and cellular senescence. X-gal staining was strong and p16INK4a-positive cells were abundant in the transitional region of ONFH. The β-galactosidase-positive cells in the transitional region were also positive for nestin, periostin, or DMP-1. In contrast, no β-galactosidase-positive cells were detected in the healthy region. The senescence-associated p16INK4a, p21, and p53 were upregulated in ONFH tissue. We also examined and analyzed a mouse ischemic femoral osteonecrosis model in vivo to verify the association between ONFH and cellular senescence. Human mesenchymal stem cell-conditioned medium (MSC-CM) was administered to determine its therapeutic efficacy against cellular senescence and bone collapse. MSC-CM reduced the number of senescent cells and downregulated the aforementioned senescence-related genes. It also decreased the number of empty lacunae 4 weeks after ischemia induction and promoted bone formation. At 6 weeks post-surgery, MSC-CM increased the trabecular bone volume, thereby suppressing bone collapse. We conclude that cellular senescence is associated with ONFH and that MSC-CM suppresses bone collapse in this disorder.

DOI： 10.1038/s41598-024-53400-w

Open Access

Web of Science

Scopus

PubMed

Do Postural and Walking Stabilities Change over a Decade by Aging? A Longitudinal Study 査読有り Open Access

Segi, N; Nakashima, H; Ito, S; Ouchida, J; Oishi, R; Yamauchi, I; Miyairi, Y; Morita, Y; Takegami, Y; Ishizuka, S; Seki, T; Hasegawa, Y; Imagama, S

JOURNAL OF CLINICAL MEDICINE   13 巻 ( 4 )   2024年2月

　詳細を見る

記述言語：英語   出版者・発行元：Journal of Clinical Medicine  

Background: Previous studies have demonstrated that the center of gravity (COG) is more unstable in the elderly than in young people. However, it is unclear whether aging itself destabilizes the COG. This study aimed to investigate changes in COG sway and gait kinematics over time by a longitudinal study of middle-aged and elderly adults. Methods: This study included 198 healthy middle-aged and elderly people who underwent stabilometry at ten-year intervals. The participants’ mean age at baseline was 62.9 ± 6.5 years, and 77 (39%) of them were male. The results of stabilometry (mean velocity, sway area, postural sway center in the medial–lateral direction [X center], and postural sway center in the anterior–posterior direction [Y center]), and results of exercise tests (the height-adjusted maximum stride length [HMSL] and the 10 m walk test [10MWT]) were analyzed. The destabilized group with 11 participants, whose mean velocity exceeded 3 cm/s after 10 years, was compared with the stable group with 187 participants, whose mean velocity did not exceed 3 cm/s. Results: Mean velocity increased significantly over ten years (open-eye, from 1.53 ± 0.42 cm to 1.86 ± 0.67 cm, p < 0.001); however, the sway area did not change significantly. X center showed no significant change, whereas Y center showed a significant negative shift (open-eye, from −1.03 ± 1.28 cm to −1.60 ± 1.56 cm, p < 0.001). Although the results of 10MWT and initial HMSL did not differ significantly, the HMSL in the destabilized group at ten years was 0.64, which was significantly smaller than the 0.72 of others (p = 0.019). Conclusions: The ten-year changes in COG sway in middle-aged and elderly adults were characterized by a significant increase in mean velocity but no significant difference in sway area. Because the destabilized group had significantly smaller HMSL at ten years, instability at the onset of movement is likely to be affected by COG instability.

DOI： 10.3390/jcm13041081

Open Access

Web of Science

Scopus

PubMed

Early versus delayed weight bearing after internal fixation for femoral neck fracture in younger adults: A multicenter retrospective study 査読有り

Hasegawa, K; Takegami, Y; Tokutake, K; Nakashima, H; Mishima, K; Kobayashi, K; Imagama, S

INJURY-INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED   55 巻 ( 2 ) 頁： 111292   2024年2月

　詳細を見る

記述言語：英語   出版者・発行元：Injury  

Introduction: Femoral neck fracture (FNF) is among the most common and devastating injuries that orthopedic surgeons encounter. However, the incidence of FNF is lower in younger adults than in elderly individuals. In elderly FNF patients, early weight bearing (EWB) is preferred to prevent loss of function and decreased activity. In younger adults, some surgeons decide on delayed-weight bearing (DWB) after surgery because EWB may cause femoral neck shortening. We aimed to compare the postoperative results (clinical outcome, radiological evaluation, and complications) of EWB and DWB after FNF surgery in younger adults. Methods: The study included 151 younger adults (age: ≤65 years at injury; nondisplaced, n = 100; displaced, n = 51) who underwent internal fixation at 11 university-affiliated hospitals in 2016–2020, and who were followed for ≥1 year. Patients were divided into the EWB (EWB in early postoperative period) and DWB (beginning weight bearing at 4 weeks after surgery) groups. The two groups were matched for age, and nondisplaced (EWB and DWB, both n = 24) and displaced (EWB and DWB, both n = 11) FNF were analyzed. The study items were age, sex, body mass index (BMI), Charlson Comorbidity Index (CCI), presence of diabetes, days waiting for surgery, fracture type, Parker mobility score (PMS) at last follow-up examination, pain (Numerical Rating Scale: NRS), radiological evaluation (femoral neck shortening, Canulated Cancellous screws (CCS) backout, and complications (nonunion, femoral head osteonecrosis). Results: The patient backgrounds of the nondisplaced and displaced types did not differ. The PMS was significantly higher in the DWB group at the last follow-up examination (nondisplaced: 8.00±2.20 vs. 6.67±2.22, p = 0.005, displaced: 8.67±0.89 vs. 6.91±2.77, p<0.001). NRS and the amount of femoral neck shortening were significantly lower in the DWB group (nondisplaced: 1.65±0.70 mm vs. 3.94±3.03 mm, p<0.001, displaced: 4.26± 2.64 mm vs. 8.91±5.69 mm, p<0.001). CCS backout did not differ between the groups. One case of each of nonunion and femoral head osteonecrosis were observed in the displaced EWB and DWB groups; these differences were not significant. Conclusions: DWB after internal fixation for FNF in younger adults was associated with better outcomes than EWB.

DOI： 10.1016/j.injury.2023.111292

Web of Science

Scopus

PubMed

Response to the Letter to the Editor: Evaluation of the Association between Neck Pain and the Trapezius Muscles in Patients with Cervical Myelopathy Using Motor Evoked Potential: A Retrospective Study 査読有り

Ito, S; Sakai, Y; Harada, A; Ando, K; Kobayashi, K; Nakashima, H; Machino, M; Kambara, S; Inoue, T; Hida, T; Ito, K; Ishiguro, N; Imagama, S

ASIAN SPINE JOURNAL   18 巻 ( 1 ) 頁： 160 - 161   2024年2月

　詳細を見る

記述言語：英語   出版者・発行元：Asian Spine Journal  

DOI： 10.31616/asj.2022.0028.r2

Web of Science

Scopus

PubMed

Rod fracture after multiple-rod technique for adult spinal deformity: a case report 査読有り

Yamauchi, I; Nakashima, H; Machino, M; Ito, S; Segi, N; Tauchi, R; Ohara, T; Kawakami, N; Imagama, S

NAGOYA JOURNAL OF MEDICAL SCIENCE   86 巻 ( 1 ) 頁： 135 - 141   2024年2月

　詳細を見る

担当区分：責任著者   記述言語：英語   出版者・発行元：Nagoya Journal of Medical Science  

Here we report the case of a 71-year-old woman who complained of lower back and left leg pain due to rod fracture following instrumented fusion using the lateral lumbar interbody fusion and multi-rod technique to treat adult spinal deformity. Radiographic images revealed bilateral rod fractures at L4-5 and pseudoarthrosis at L2-5; lower lumbar lordosis was minimal, but upper lumbar hyperlordosis was noted. The patient underwent revision surgery, which included posterior spinal instrument replacement, L3-4 and L4-5 lateral lumbar interbody fusion cage removal, and L4 vertebral body replacement via the anterior approach. This is a rare case of reoperation with the multi-rod technique. Revision surgery should be performed in consideration of the proportion of lumbar lordosis and anterior bony fusion as the posterior component is resected and bony fusion can only be achieved anteriorly.

DOI： 10.18999/nagjms.86.1.135

Web of Science

Scopus

PubMed

特集 始まった! 脊椎ロボット手術 ロボット支援脊椎手術-Mazor Xを用いた脊椎手術の有用性と課題

金村 徳相, 都島 幹人, 富田 浩之, 森下 和明, 大島 和馬, 中島 宏彰

脊椎脊髄ジャーナル   37 巻 ( 1 ) 頁： 25 - 38   2024年1月

　詳細を見る

出版者・発行元：三輪書店  

DOI： 10.11477/mf.5002202249

CiNii Research

Early Versus Delayed Surgery for Elderly Traumatic Cervical Spinal Injury: A Nationwide Multicenter Study in Japan 査読有り Open Access

Segi, N; Nakashima, H; Ito, S; Yokogawa, N; Sasagawa, T; Watanabe, K; Nori, S; Funayama, T; Eto, F; Nakajima, H; Terashima, Y; Hirota, R; Hashimoto, K; Onoda, Y; Furuya, T; Yunde, A; Ikegami, S; Uehara, M; Suzuki, H; Imajo, Y; Uei, H; Sawada, H; Kawaguchi, K; Nakanishi, K; Suzuki, N; Oshima, Y; Hasegawa, T; Iizuka, Y; Tonomura, H; Terai, H; Akeda, K; Seki, S; Ishihara, M; Inoue, G; Funao, H; Yoshii, T; Kaito, T; Kiyasu, K; Tominaga, H; Kakutani, K; Sakai, D; Ohba, T; Otsuki, B; Miyazaki, M; Murotani, K; Okada, S; Imagama, S; Kato, S

GLOBAL SPINE JOURNAL   15 巻 ( 2 ) 頁： 1143 - 1154   2024年1月

　詳細を見る

記述言語：英語   出版者・発行元：Global Spine Journal  

Study Design: Retrospective multicenter study. Objectives: The effectiveness of early surgery for cervical spinal injury (CSI) has been demonstrated. However, whether early surgery improves outcomes in the elderly remains unclear. This study investigated whether early surgery for CSI in elderly affects complication rates and neurological outcomes. Methods: This retrospective multicenter study included 462 patients. We included patients with traumatic acute cervical spinal cord injury aged ≥65 years who were treated surgically, whereas patients with American Spinal Injury Association (ASIA) Impairment Scale E, those with unknown operative procedures, and those waiting for surgery for >1 month were excluded. The minimum follow-up period was 6 months. Sixty-five patients (early group, 14.1%) underwent surgical treatment within 24 hours, whereas the remaining 397 patients (85.9%) underwent surgery on a standby basis (delayed group). The propensity score-matched cohorts of 63 cases were compared. Results: Patients in the early group were significantly younger, had significantly more subaxial dislocations (and fractures), tetraplegia, significantly lower ASIA motor scores, and ambulatory abilities 6 months after injury. However, no significant differences in the rate of complications, ambulatory abilities, or ASIA Impairment Scale scores 6 months after injury were observed between the matched cohorts. At 6 months after injury, 61% of the patients in the early group (25% unsupported and 36% supported) and 53% of the patients in the delayed group (34% unsupported and 19% supported) were ambulatory. Conclusions: Early surgery is possible for CSI in elderly patients as the matched cohort reveals no significant difference in complication rates and neurological or ambulatory recovery between the early and delayed surgery groups.

DOI： 10.1177/21925682241227430

Open Access

Web of Science

Scopus

PubMed

連載 最新原著レビュー 地域住民中高齢者における頚部痛と神経障害性疼痛の関係

町野 正明, 中島 宏彰, 今釜 史郎

整形外科   75 巻 ( 1 ) 頁： 71 - 75   2024年1月

　詳細を見る

出版者・発行元：南江堂  

DOI： 10.15106/j_seikei75_71

CiNii Research

Implant-Related Complications after Spinal Fusion: A Multicenter Study 査読有り Open Access

Koshimizu, H; Nakashima, H; Ohara, T; Tauchi, R; Kanemura, T; Shinjo, R; Machino, M; Ito, S; Ando, K; Imagama, S

GLOBAL SPINE JOURNAL   14 巻 ( 1 ) 頁： 74 - 81   2024年1月

　詳細を見る

記述言語：英語   出版者・発行元：Global Spine Journal  

Study Design: Retrospective analysis of prospectively database Objective: Implant-related complications are an extremely important issue because they pose a burden to patients who underwent surgery. An understanding of these complications can help improve the postoperative management of patients undergoing spinal surgery. The current large-scale multicenter study aimed to identify postoperative implant-related complications that may require revision surgery. Methods: In total, 3447 patients who underwent spinal fusion surgery were included in the analysis. Data about age at surgery, sex, preoperative diagnosis, surgical level, type of implant-related complications, causes of reoperation, and time from the initial to revision surgery were reviewed. Moreover, the characteristics of reoperation in 3 periods (within 30, 31–90, and over 90 days) were assessed. Result: The overall incidence of implant-related complications was 4.6%. Adult spinal deformity was the most common diagnosis (9.9%), and thoracic-lumbar-sacral (42.9%) was the most common surgical level among patients with implant-related complications. Further, screw malposition was the most frequent implant-related complication (42.8%). In total, 89 (2.6%) patients underwent reoperation due to implant-related complications. The main causes of reoperation within 30, 31–90, and over 90 days were screw malposition (72.2%), screw loosening or pull out (81.8%), and rod or screw fracture (60.9%), respectively. Conclusion: To the best of our knowledge, this was the first large-scale multicenter study that assessed the characteristics of patients who underwent reoperation due to spinal implant-related complications. The study results could improve the preoperative informed consent procedure about spinal fusion.

DOI： 10.1177/21925682221094267

Open Access

Web of Science

Scopus

PubMed