المؤلفون: Uehara, Masashi, Takahashi, Jun, Mukaiyama, Keijiro, Kuraishi, Shugo, Shimizu, Masayuki, Futatsugi, Toshimasa, Kato, Hiroyuki, Ogihara, Nobuhide, Hirabayashi, Hiroki, Hashidate, Hiroyuki

المصدر: Journal of Orthopaedic Science ; volume 18, issue 6, page 916-925 ; ISSN 0949-2658

مصطلحات موضوعية: Orthopedics and Sports Medicine, Surgery

الإتاحة: https://doi.org/10.1007/s00776-013-0465-3Test
https://api.elsevier.com/content/article/PII:S0949265815303869?httpAccept=text/xmlTest
https://api.elsevier.com/content/article/PII:S0949265815303869?httpAccept=text/plainTest

المؤلفون: Oba, Hiroki, Takahashi, Jun, Futatsugi, Toshimasa, Mogami, Yuji, Shibata, Syunichi, Ohji, Yoshihito, Tanikawa, Hirotaka

المصدر: The Spine Journal ; volume 13, issue 9, page 1088-1094 ; ISSN 1529-9430

مصطلحات موضوعية: Neurology (clinical), Surgery, Orthopedics and Sports Medicine

الإتاحة: https://doi.org/10.1016/j.spinee.2013.03.057Test
https://api.elsevier.com/content/article/PII:S1529943013005482?httpAccept=text/xmlTest
https://api.elsevier.com/content/article/PII:S1529943013005482?httpAccept=text/plainTest

المؤلفون: Masashi Uehara, Jun Takahashi, Shota Ikegami, Shugo Kuraishi, Masayuki Shimizu, Toshimasa Futatsugi, Hiroki Oba, Michihiko Koseki, Hiroyuki Kato, Uehara, Masashi, Takahashi, Jun, Ikegami, Shota, Kuraishi, Shugo, Shimizu, Masayuki, Futatsugi, Toshimasa, Oba, Hiroki, Koseki, Michihiko, Kato, Hiroyuki

المصدر: Spine (03622436); 12/15/2017, Vol. 42 Issue 24, p1895-1900, 6p

المؤلفون: Uehara, Masashi, Takahashi, Jun, Ikegami, Shota, Kuraishi, Shugo, Futatsugi, Toshimasa, Kato, Hiroyuki

المصدر: European Spine Journal; Nov2017, Vol. 26 Issue 11, p2858-2864, 7p

مصطلحات موضوعية: SPINAL surgery, COMPUTED tomography, ACCURACY, LUMBOSACRAL region, ODDS ratio, CERVICAL vertebrae, LUMBAR vertebrae surgery, BONE screws, SPINAL fusion, SURGICAL complications, RETROSPECTIVE studies, COMPUTER-assisted surgery, SURGERY

مستخلص: Purpose: Pedicle screw (PS) insertion has been criticized for its risk of serious injury to neurovascular structures. Although computed tomography (CT)-based navigation has been developed to avoid such complications, perforation remains an issue, even with the aid of additional guidance. We clarify screw perforation rate and direction in 359 consecutive patients treated using CT-based PS insertion and present important considerations for more accurate screw placement.Methods: The medical records of 359 consecutive patients who underwent PS insertion involving C2-L5 using a CT-based navigation system were reviewed. Postoperative CT images were analyzed to evaluate the accuracy of screw placement. We investigated both rate and direction of screw perforation according to vertebral level.Results: Of the 3413 PS that were inserted, 6.9% were judged as Grade 2 or 3 perforations. The combined rate of these perforations was 5.0% for C2, 11.4% for C3-5, 7.0% for C6-7, 10.4% for T1-4, 8.8% for T5-8, 4.5% for T9-12, and 3.8% for L1-5. We also analyzed the odds ratio (OR) for screw perforation in vertebrae accounting for the effects of age and disease. Multivariate analysis identified that PS insertions at C3-5 (OR 2.9, 95% CI 1.6-5.1; p < 0.001), T1-4 (OR 2.7, 95% CI 1.6-4.7; p < 0.001), and T5-8 (OR 2.3; 95% CI 1.4-3.8; p = 0.001) were significantly associated with Grade 2 or 3 screw perforation as compared with that of L1-5.Conclusions: Even with CT-based navigation, careful insertion of PS is needed in the middle cervical spine because of a significantly higher perforation rate as compared with the lumbar region. [ABSTRACT FROM AUTHOR]

: Copyright of European Spine Journal is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Uehara, Masashi, Takahashi, Jun, Kuraishi, Shugo, Shimizu, Masayuki, Ikegami, Shota, Futatsugi, Toshimasa, Aoki, Kaoru, Mukaiyama, Keijiro, Ogihara, Nobuhide, Hashidate, Hiroyuki, Hirabayashi, Hiroki, Kato, Hiroyuki

المصدر: Asian Spine Journal; Aug2015, Vol. 9 Issue 4, p548-552, 5p

مصطلحات موضوعية: SPINAL nerve diseases, RADICULOPATHY, SPINAL nerves, RETRACTORS (Surgery), CERVICAL plexus, ENDOSCOPIC surgery, TREATMENT effectiveness, SURGERY, THERAPEUTICS

مستخلص: Study Design: Retrospective chart review. Purpose: A comparison of mini open foraminotomy (MOF) for cervical radiculopathy using either large tubular (LT) or TrimLine (TL) retractors. Overview of Literature: Posterior foraminotomy relieves compression of the cervical nerve root in radiculopathy patients. However, invasion of the paravertebral muscle may cause major problems in these patients. To address these problems, we performed MOF. Methods: Twenty cervical radiculopathy patients (16 male and 4 female) who underwent MOF between May 2004 and August 2011 were assigned to LT and TL groups. Each group contained 10 subjects. Surgical and clinical outcomes were compared. Results: The average operating time in the TL group was significantly shorter than that in the LT group. The final follow-up mean neck disability indices significantly improved compared to the preoperative values (LT group, 12.0±7.8 vs. 28.0±9.4; TL group, 6.0±5.9 vs. 21.9±10). The final follow-up neck pain visual analog scale (VAS) scores also decreased significantly from the preoperative of 8.0±1.5 and 2.5±2.5 to the final follow-up values of 2.2±2.2 and 1.0±2.5 in the LT and TL groups, respectively. The recovery rate for the neck pain VAS score was 70.0±31.9 in the LT group and 87.0±32.0 in the TL group, thus suggesting no significant difference between the two groups. Conclusions: MOF with the TL retractor is an easy and safe procedure. Furthermore, the use of the TL retractor allows for a minimally invasive and effective surgical treatment of cervical radiculopathy patients. [ABSTRACT FROM AUTHOR]

: Copyright of Asian Spine Journal is the property of Korean Society of Spine Surgery and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Inoue, Gen, Miyagi, Masayuki, Saito, Wataru, Shirasawa, Eiki, Uchida, Kentaro, Hosogane, Naobumi, Watanabe, Kei, Katsumi, Keiichi, Kaito, Takashi, Yamashita, Tomoya, Fujiwara, Hiroyasu, Nagamoto, Yukitaka, Nojiri, Kenya, Suzuki, Satoshi, Okada, Eijiro, Ueda, Seiji, Hikata, Tomohiro, Shiono, Yuta, Watanabe, Kota, Terai, Hidetomi, Tamai, Koji, Matsuoka, Yuji, Suzuki, Hidekazu, Nishimura, Hirosuke, Tagami, Atsushi, Yamada, Shuta, Adachi, Shinji, Ohtori, Seiji, Furuya, Takeo, Orita, Sumihisa, Inage, Kazuhide, Yoshii, Toshitaka, Ushio, Shuta, Funao, Haruki, Isogai, Norihiro, Harimaya, Katsumi, Okada, Seiji, Kawaguchi, Kenichi, Yokoyama, Nobuhiko, Oishi, Hidekazu, Doi, Toshio, Kiyasu, Katsuhito, Imagama, Shiro, Ando, Kei, Kobayashi, Kazuyoshi, Sakai, Daisuke, Tanaka, Masahiro, Kimura, Atsushi, Inoue, Hirokazu, Nakano, Atsushi, Ikegami, Shota, Shimizu, Masayuki, Futatsugi, Toshimasa, Kakutani, Kenichiro, Yurube, Takashi, Nakanishi, Kazuyoshi, Oshima, Masashi, Uei, Hiroshi, Aoki, Yasuchika, Takahata, Masahiko, Iwata, Akira, Endo, Hirooki, Seki, Shoji, Murakami, Hideki, Kato, Satoshi, Yoshioka, Katsuhito, Hongo, Michio, Abe, Tetsuya, Tsukanishi, Toshinori, Takaso, Masashi, Ishii, Ken

المصدر: Medicine; December 2022, Vol. 101 Issue: 52 pe32330-e32330, 1p

مستخلص: A retrospective multicenter study. Body mass index (BMI) is recognized as an important determinant of osteoporosis and spinal postoperative outcomes; however, the specific impact of BMI on surgery for osteoporotic vertebral fractures (OVFs) remains inconclusive. This retrospective multicenter study investigated the impact of BMI on clinical outcomes following fusion surgery for OVFs. 237 OVF patients (mean age, 74.3 years; 48 men and 189 women) with neurological symptoms who underwent spinal fusion were included in this study. Patients were grouped by World Health Organization BMI categories: low BMI (<18.5 kg/m2), normal BMI (≥18.5 and <25 kg/m2), and high BMI (≥25 kg/m2). Patients’ backgrounds, surgical method, radiological findings, pain measurements, activities of daily living (ADL), and postoperative complications were compared after a mean follow-up period of 4 years. As results, the proportion of patients able to walk independently was significantly smaller in the low BMI group (75.0%) compared with the normal BMI group (89.9%; P = .01) and the high BMI group (94.3%; P = .04). Improvement in the visual analogue scale for leg pain was significantly less in the low BMI group than the high BMI group (26.7 vs 42.8 mm; P = .046). Radiological evaluation, the Frankel classification, and postoperative complications were not significantly different among all 3 groups. Improvement of pain intensity and ADL in the high BMI group was equivalent or non-significantly better for some outcome measures compared with the normal BMI group. Leg pain and independent walking ability after fusion surgery for patients with OVFs improved less in the low versus the high BMI group. Surgeons may want to carefully evaluate at risk low BMI patients before fusion surgery for OVF because poor clinical results may occur.

المؤلفون: Uehara, Masashi, Takahashi, Jun, Ogihara, Nobuhide, Hirabayashi, Hiroki, Mukaiyama, Keijiro, Kuraishi, Shugo, Shimizu, Masayuki, Futatsugi, Toshimasa, Hashidate, Hiroyuki, Kato, Hiroyuki

الوصف: Study design A retrospective single-center study. Summary and background We routinely have used C1-C2 transarticular and cervical pedicle screw fixations to reconstruct highly destructed unstable rheumatoid arthritis (RA) cervical lesions. However, there is little data on midterm results of surgical reconstruction for rheumatoid cervical disorders, particularly, cervical pedicle screw fixation. Objectives The purpose of this study was to evaluate the mid-term surgical results of computer-assisted cervical reconstruction for such lesions. Methods Seventeen subjects (4 men, 13 women; mean age, 61 +/- 9 years) with RA cervical lesions who underwent C1-C2 transarticular screw fixation or occipitocervical fixation, with at least 5 years follow-up were studied. A frameless, stereotactic, optoelectronic, CT-based image-guidance system, was used for correct screw placement. Variables including the Japanese Orthopaedic Association (JOA) score, Ranawat class, EuroQol (EQ-5D), atlantodental interval, and Ranawat values before, and at 2 and 5 years after surgery, were evaluated. Furthermore, screw perforation rates were evaluated. Results The lesions included atlantoaxial subluxation (AAS, n = 6), AAS + vertical subluxation (VS, n = 7), and AAS + VS + subaxial subluxation (n = 4). There was significant neurological improvement at 2 years after surgery, as evidenced by the JOA scores, Ranawat class, and the EQ-5D utility weight. However, at 5 years after surgery, there was a deterioration of this improvement. The Ranawat values before, and at 2 and 5 years after surgery, were not significantly different. Major screw perforation rate was 2.1 %. No neural and vascular complications associated with screw insertion were observed. Conclusions Subjects with rheumatoid cervical lesions who underwent C1-C2 transarticular screw fixation or occipitocervical fixation using a pedicle screw had significantly improved clinical parameters at 2 years after surgery. However, there was a deterioration of this improvement at 5 years post ...

وصف الملف: application/pdf

العلاقة: https://pubmed.ncbi.nlm.nih.gov/24019095Test; https://doi.org/10.1007/s00776-013-0465-3Test; JOURNAL OF ORTHOPAEDIC SCIENCE; 18; 916; 925; AA11052566; https://soar-ir.repo.nii.ac.jp/record/8006/files/Mid-term_Results_Computer-assisted_Cervical_Reconstruction.pdfTest

الإتاحة: https://doi.org/10.1007/s00776-013-0465-3Test
https://soar-ir.repo.nii.ac.jp/record/8006/files/Mid-term_Results_Computer-assisted_Cervical_Reconstruction.pdfTest