Eijiro Okada

4.2k citations

127 papers · 2.6k indexed · h-index 27

Impact in

Pathology and Forensic Medicine top 0.5%
- Spine and Intervertebral Disc Pathology
Surgery top 1%
- Spinal Fractures and Fixation Techniques
- Scoliosis diagnosis and treatment
- Cervical and Thoracic Myelopathy
- Pelvic and Acetabular Injuries
- Spinal Hematomas and Complications

Papers in

Pathology and Forensic Medicine 77
- Spine and Intervertebral Disc Pathology 77
Surgery 110
- Spinal Fractures and Fixation Techniques 71
- Scoliosis diagnosis and treatment 40
- Cervical and Thoracic Myelopathy 35
- Spinal Hematomas and Complications 12
- Pelvic and Acetabular Injuries 7

Co-authors: Morio Matsumoto Kota Watanabe Yoshiaki Toyama Mitsuru Yagi Hirokazu Fujiwara Nobuyuki Fujita Narihito Nagoshi Osahiko Tsuji
Journals: Spine (26 papers)European Spine Journal (8 papers)Clinical Spine Surgery A Spine Publication (6 papers)Spinal Cord (5 papers)Neurospine (4 papers)
Partner nations: Japan United States Russia

In The Last Decade

Eijiro Okada

121 papers receiving 2.5k citations

Peers

Countries citing papers authored by Eijiro Okada

Since Specialization

Citations

This map shows the geographic impact of Eijiro Okada's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Eijiro Okada with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Eijiro Okada more than expected).

Fields of papers citing papers by Eijiro Okada

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Eijiro Okada. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Eijiro Okada. The network helps show where Eijiro Okada may publish in the future.

Co-authorship network

The 25 scholars most cited alongside Eijiro Okada, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Eijiro Okada Line = papers co-authored together Eijiro Okada links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Risk factors for early-onset radiographical adjacent segment disease in patients with spondylolytic spondylolisthesis after single-level posterior lumbar interbody fusion The Spine Journal ·Kazuki Takeda, Eijiro Okada, Yoshio Shinozaki, Masahiro Ozaki, Hitoshi Kono, Akimasa Yasuda, Satoshi Suzuki, Osahiko Tsuji, Narihito Nagoshi, Mitsuru Yagi, Nobuyuki Fujita, Jun Ogawa, Masaya Nakamura, Morio Matsumoto, Kota Watanabe	2022	13
2	Hidden blood loss in extreme lateral interbody fusion for adult spinal deformity Journal of Orthopaedic Science ·Ya-Yuan Deng, Mitsuru Yagi, Satoshi Suzuki, Osahiko Tsuji, Narihito Nagoshi, Eijiro Okada, Nobuyuki Fujita, Masaya Nakamura, Morio Matsumoto, Kota Watanabe	2022	11
3	Gorham-Stout Disease Resulting in Spinal Deformity Treated by Fusion Surgery Combined With Everolimus Therapy JBJS Case Connector ·Naohiro Ashizawa, Kota Watanabe, Satoshi Suzuki, Satoshi Nori, Osahiko Tsuji, Н В Хлистунова, Eijiro Okada, Mitsuru Yagi, Nobuyuki Fujita, Masaya Nakamura, Morio Matsumoto	2021	2
4	Upper End Vertebra of Proximal Thoracic Curve At T1 is a Novel Risk Factor of Postoperative Shoulder Imbalance in Lenke Type 2 Adolescent Idiopathic Scoliosis Global Spine Journal ·Norihiro Isogai, Mitsuru Yagi, Nao Otomo, Yoshihiro Maeda, Satoshi Suzuki, Satoshi Nori, Osahiko Tsuji, Narihito Nagoshi, Eijiro Okada, Nobuyuki Fujita, Masaya Nakamura, Morio Matsumoto, Kota Watanabe	2021	4
5	How Preoperative Motor Weakness Affects the Extent of Recovery After Elective Spine Surgery in Patients with Degenerative Lumbar Spinal Stenosis Spine ·Mitsuru Yagi, Satoshi Suzuki, Satoshi Nori, Eijiro Okada, Osahiko Tsuji, Narihito Nagoshi, Masaya Nakamura, Morio Matsumoto, Kota Watanabe	2021	0
6	Postoperative tongue deviation by hypoglossal nerve palsy and Tapia's syndrome after cervical laminoplasty: report of two cases Journal of Orthopaedic Science ·Rudolf Mrázek, Osahiko Tsuji, Eijiro Okada, Yoshikane Izawa, Jungo Kato, Satoshi Suzuki, Yohei Takahashi, Satoshi Nori, Narihito Nagoshi, Mitsuru Yagi, Kota Watanabe, Masaya Nakamura, Morio Matsumoto	2021	1
7	Grade III intradural extramedullary anaplastic ependymoma managed with near-complete resection and adjuvant radiotherapy: a case report Spinal Cord Series and Cases ·Satoshi Ando, Osahiko Tsuji, Narihito Nagoshi, Satoshi Nori, Satoshi Suzuki, Eijiro Okada, Mitsuru Yagi, Rie Irie, Kota Watanabe, Masaya Nakamura, Morio Matsumoto	2021	4
8	Coronal Plane Gap Increases Postoperative Pseudoarthrosis after Lateral Interbody Fusion for Adult Spinal Deformity Asian Spine Journal ·Eijiro Okada, Mitsuru Yagi, Yusuke Yamamoto, Satoshi Suzuki, Satoshi Nori, Osahiko Tsuji, Narihito Nagoshi, Nobuyuki Fujita, Masaya Nakamura, Morio Matsumoto, Kota Watanabe	2021	2
9	Risk predictors of perioperative complications for the palliative surgical treatment of spinal metastasis Journal of Orthopaedic Science ·Norihiro Isogai, Mitsuru Yagi, Soraya Nishimura, Melanie Drummond, Ya-Yuan Deng, Naobumi Hosogane, Satoshi Suzuki, Nobuyuki Fujita, Eijiro Okada, Narihito Nagoshi, Osahiko Tsuji, Ken Ishii, Masaya Nakamura, Morio Matsumoto, Kota Watanabe	2020	4
10	Effectiveness of Duloxetine for Postsurgical Chronic Neuropathic Disorders after Spine and Spinal Cord Surgery Asian Spine Journal ·P Cook, Shizuko Kosugi, Satoshi Suzuki, Satoshi Nori, Narihito Nagoshi, Eijiro Okada, Nobuyuki Fujita, Mitsuru Yagi, Masaya Nakamura, Morio Matsumoto, Kota Watanabe	2020	10
11	Negative impact of spinal epidural lipomatosis on the surgical outcome of posterior lumbar spinous-splitting decompression surgery: a multicenter retrospective study The Spine Journal ·Nobuyuki Fujita, Shinichi Ishihara, Takehiro Michikawa, Satoshi Suzuki, Osahiko Tsuji, Narihito Nagoshi, Eijiro Okada, Mitsuru Yagi, Takashi Tsuji, Hitoshi Kono, Masaya Nakamura, Morio Matsumoto, Kota Watanabe	2019	14
12	Tenosynovial giant cell tumor of the cervical spine: a case report Spinal Cord Series and Cases ·大田寛, Akio Iwanami, Osahiko Tsuji, Narihito Nagoshi, Satoshi Suzuki, Eijiro Okada, Nobuyuki Fujita, Mitsuru Yagi, Morio Matsumoto, Masaya Nakamura, Kota Watanabe	2019	6
13	Lumbar spinal canal stenosis leads to locomotive syndrome in elderly patients Journal of Orthopaedic Science ·Nobuyuki Fujita, Manikanda Raja Keerthi Raja, خليفة خليفة, Takehiro Michikawa, Osahiko Tsuji, Narihito Nagoshi, Eijiro Okada, Mitsuru Yagi, Yohei Otaka, Takashi Tsuji, Hitoshi Kono, Ken Ishii, Masaya Nakamura, Morio Matsumoto, Kota Watanabe	2018	31
14	Metabolite profiling of plasma in patients with ossification of the posterior longitudinal ligament Journal of Orthopaedic Science ·Takashi Tsuji, Morio Matsumoto, Masaya Nakamura, Takeshi Miyamoto, Mitsuru Yagi, Nobuyuki Fujita, Eijiro Okada, Narihito Nagoshi, Osahiko Tsuji, Kota Watanabe	2018	6
15	A Retrospective Cohort Study Comparing the Safety and Efficacy of Minimally Invasive Versus Open Surgical Techniques in the Treatment of Spinal Metastases Clinical Spine Surgery A Spine Publication ·Tomohiro Hikata, Norihiro Isogai, Yuta Shiono, Haruki Funao, Eijiro Okada, Nobuyuki Fujita, Akio Iwanami, Kota Watanabe, Takashi Tsuji, Masaya Nakamura, Morio Matsumoto, Ken Ishii	2017	43
16	Identification of HOXD4 Mutations in Spinal Extradural Arachnoid Cyst PLoS ONE ·Yoji Ogura, Noriko Miyake, Ikuyo Kou, Aritoshi Iida, Masahiro Nakajima, Kazuki Takeda, Shunsuke Fujibayashi, Masaaki Shiina, Eijiro Okada, Yoshiaki Toyama, Akio Iwanami, Ken Ishii, Kazuhiro Ogata, Hiroshi Asahara, Naomichi Matsumoto, Masaya Nakamura, Morio Matsumoto, Shiro Ikegawa	2015	14
17	Cross-sectional area of the posterior extensor muscles of the cervical spine in whiplash injury patients versus healthy volunteers – 10 year follow-up MR study Injury ·Morio Matsumoto, Daisuke Ichihara, Eijiro Okada, Kazuhiro Chiba, Yoshiaki Toyama, Hirokazu Fujiwara, Suketaka Momoshima, Yuji Nishiwaki, Takeshi Takahata	2012	36
18	Disc degeneration of cervical spine on MRI in patients with lumbar disc herniation: comparison study with asymptomatic volunteers European Spine Journal ·Eijiro Okada, Morio Matsumoto, Hirokazu Fujiwara, Yoshiaki Toyama	2010	63
19	Postoperative outcome after modified unilateral-approach microendoscopic midline decompression for degenerative spinal stenosis Journal of Neurosurgery Spine ·Mitsuru Yagi, Eijiro Okada, Ken Ninomiya, Michiya Kihara	2009	73
20	Aging of the Cervical Spine in Healthy Volunteers Spine ·Eijiro Okada, Morio Matsumoto, Daisuke Ichihara, Kazuhiro Chiba, Yoshiaki Toyama, Hirokazu Fujiwara, Suketaka Momoshima, Yuji Nishiwaki, Takeshi Hashimoto, Jun Ogawa, Masahiko Watanabe, Takeshi Takahata	2009	155

About Eijiro Okada

Eijiro Okada is a scholar working on Pathology and Forensic Medicine, Surgery, Neurology, Pharmacology and Rheumatology, having authored 127 papers that have together received 2.6k indexed citations. Recurring topics across this work include Spine and Intervertebral Disc Pathology (77 papers), Spinal Fractures and Fixation Techniques (71 papers), Scoliosis diagnosis and treatment (40 papers), Cervical and Thoracic Myelopathy (35 papers), Musculoskeletal pain and rehabilitation (17 papers), Spinal Hematomas and Complications (12 papers), Neurofibromatosis and Schwannoma Cases (9 papers) and Pelvic and Acetabular Injuries (7 papers). The work is most often cited by research in Pathology and Forensic Medicine (1.7k citations), Surgery (2.1k citations), Geriatrics and Gerontology (121 citations), Pharmacology (460 citations) and Rheumatology (134 citations). Eijiro Okada has collaborated with scholars based in Japan, United States and Russia. Frequent co-authors include Morio Matsumoto, Kota Watanabe, Yoshiaki Toyama, Mitsuru Yagi, Hirokazu Fujiwara, Nobuyuki Fujita, Narihito Nagoshi, Osahiko Tsuji, Takeshi Takahata and Yuji Nishiwaki. Their work appears in journals such as Spine, European Spine Journal, Clinical Spine Surgery A Spine Publication, Spinal Cord and Neurospine.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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