Hiroki Oba

1.2k total citations
109 papers, 799 citations indexed

About

Hiroki Oba is a scholar working on Surgery, Pathology and Forensic Medicine and Pharmacology. According to data from OpenAlex, Hiroki Oba has authored 109 papers receiving a total of 799 indexed citations (citations by other indexed papers that have themselves been cited), including 101 papers in Surgery, 54 papers in Pathology and Forensic Medicine and 6 papers in Pharmacology. Recurrent topics in Hiroki Oba's work include Spinal Fractures and Fixation Techniques (82 papers), Scoliosis diagnosis and treatment (64 papers) and Spine and Intervertebral Disc Pathology (54 papers). Hiroki Oba is often cited by papers focused on Spinal Fractures and Fixation Techniques (82 papers), Scoliosis diagnosis and treatment (64 papers) and Spine and Intervertebral Disc Pathology (54 papers). Hiroki Oba collaborates with scholars based in Japan, United States and Australia. Hiroki Oba's co-authors include Tetsuro Ohba, Hirotaka Haro, Shigeto Ebata, Jun Takahashi, Kensuke Koyama, Shota Ikegami, Masashi Uehara, Shugo Kuraishi, Toshimasa Futatsugi and Michihiko KOSEKI and has published in prestigious journals such as SHILAP Revista de lepidopterología, Scientific Reports and Spine.

In The Last Decade

Hiroki Oba

90 papers receiving 786 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Hiroki Oba Japan	16	690	454	94	68	39	109	799
Takayuki Imura Japan	15	528 0.8×	274 0.6×	109 1.2×	94 1.4×	59 1.5×	65	714
Pablo Besa Chile	11	253 0.4×	223 0.5×	89 0.9×	153 2.3×	43 1.1×	40	443
Keiichi Katsumi Japan	15	489 0.7×	372 0.8×	30 0.3×	37 0.5×	18 0.5×	45	596
Shoichiro Ohyama Japan	15	426 0.6×	327 0.7×	36 0.4×	65 1.0×	63 1.6×	47	562
Taichi Tsuji Japan	26	1.4k 2.1×	805 1.8×	80 0.9×	185 2.7×	30 0.8×	51	1.5k
Ravishankar Vedantam United States	12	756 1.1×	302 0.7×	79 0.8×	21 0.3×	79 2.0×	13	839
Todd L. Lincoln United States	8	364 0.5×	218 0.5×	70 0.7×	155 2.3×	53 1.4×	13	535
Munehisa Koizumi Japan	13	319 0.5×	317 0.7×	66 0.7×	142 2.1×	44 1.1×	34	535
James W. Hardacker United States	8	634 0.9×	493 1.1×	154 1.6×	72 1.1×	21 0.5×	11	745
Franziska A. Schmidt United States	12	372 0.5×	359 0.8×	97 1.0×	135 2.0×	14 0.4×	39	487

Countries citing papers authored by Hiroki Oba

Since Specialization

Citations

This map shows the geographic impact of Hiroki Oba'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 Hiroki Oba with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hiroki Oba more than expected).

Fields of papers citing papers by Hiroki Oba

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hiroki Oba. 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 Hiroki Oba. The network helps show where Hiroki Oba may publish in the future.

Co-authorship network of co-authors of Hiroki Oba

This figure shows the co-authorship network connecting the top 25 collaborators of Hiroki Oba. A scholar is included among the top collaborators of Hiroki Oba based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Hiroki Oba. Hiroki Oba is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Uehara, Masashi, Tomohiro Banno, Shoji Seki, et al.. (2025). Selective Versus Non-Selective Thoracic Fusion for Adolescent Idiopathic Scoliosis Lenke 1B/1C Curves: Multi-Center Clinical and Radiographic Analysis at 2-Year Follow-Up. Medicina. 61(5). 909–909.

Arima, Hideyuki, Tomoyuki Asada, Satoru Demura, et al.. (2025). Morbidity and Mortality of Adult Spinal Deformity Surgery Using the Japanese Orthopedic Association National Registry/Japanese Society for Spine Surgery and Related Research Database (JOANR/JSSR-DB). PubMed. 9(4). 426–435. 1 indexed citations

Oba, Hiroki, Kei Watanabe, Tomoyuki Asada, et al.. (2024). Effects of Physiotherapeutic Scoliosis-Specific Exercise for Adolescent Idiopathic Scoliosis Cobb Angle: A Systematic Review. Spine Surgery and Related Research. 9(2). 120–129.

Arima, Hideyuki, Yu Yamato, Yosuke Shibata, et al.. (2024). The Validation of the Japanese Version of the Scoliosis Research Society-30 Questionnaire for Adolescent Idiopathic Scoliosis Patients. Spine Surgery and Related Research. 8(3). 280–286.

Uehara, Masashi, Hiromichi Misawa, Takahiro Tsutsumimoto, et al.. (2023). Comparison of PLIF/TLIF and LLIF for two-level degenerative lumbar spondylolisthesis. Interdisciplinary Neurosurgery. 33. 101770–101770.

Matsumoto, Gen, Shota Ikegami, Hiroki Oba, et al.. (2023). Impact of the COVID-19 pandemic on the incidence of surgical site infection after orthopaedic surgery: an interrupted time series analysis of the nationwide surveillance database in Japan. Journal of Hospital Infection. 146. 160–165. 2 indexed citations

Uehara, Masashi, Shota Ikegami, Hiroki Oba, et al.. (2023). Frequency and Associated Factors of Postoperative Wound Dehiscence in Posterior Cervical Spine Surgery. World Neurosurgery. 172. e679–e683. 1 indexed citations

Ikegami, Shota, Hikaru Nishimura, Hiroki Oba, et al.. (2023). Reliability and validity of gait dynamic balance assessment in adult spinal deformity patients using a two-point trunk motion measuring device. The Spine Journal. 23(7). 1045–1053. 1 indexed citations

Oba, Hiroki, et al.. (2023). Reduction in CT scan number with the reference frame middle attachment method in intraoperative CT navigation for adolescent idiopathic scoliosis. European Spine Journal. 32(9). 3133–3139. 1 indexed citations

10.

Oba, Hiroki, Masashi Uehara, Shota Ikegami, et al.. (2022). Tips and pitfalls to improve accuracy and reduce radiation exposure in intraoperative CT navigation for pediatric scoliosis: a systematic review. The Spine Journal. 23(2). 183–196. 7 indexed citations

11.

Oba, Hiroki, Shota Ikegami, Shugo Kuraishi, et al.. (2022). Comparison of differences and random errors in pedicle diameter measurements between MRI and CT: observational study of 315 pedicles in Lenke type 1 adolescent idiopathic scoliosis patients. The Spine Journal. 22(6). 1002–1011. 2 indexed citations

12.

Ikegami, Shota, Tomohiro Banno, Shoji Seki, et al.. (2022). Usefulness of modified S-line for upper instrumented vertebra selection in adolescent idiopathic scoliosis Lenke type 2 curves. Scientific Reports. 12(1). 16996–16996. 1 indexed citations

13.

Uehara, Masashi, Shota Ikegami, Shugo Kuraishi, et al.. (2021). Comparison of fusion versus non-fusion surgery for retro-odontoid pseudotumor with atlanto-axial subluxation. North American Spine Society Journal (NASSJ). 6. 100064–100064. 2 indexed citations

14.

Ushirozako, Hiroki, Tomohiko Hasegawa, Shigeto Ebata, et al.. (2020). Impact of Early Intervertebral Osseous Union After Posterior Lumbar Interbody Fusion on Health-Related Quality of Life. Global Spine Journal. 12(3). 399–408. 7 indexed citations

15.

Ohba, Tetsuro, Shigeto Ebata, Shota Ikegami, Hiroki Oba, & Hirotaka Haro. (2020). Indications and limitations of minimally invasive lateral lumbar interbody fusion without osteotomy for adult spinal deformity. European Spine Journal. 29(6). 1362–1370. 10 indexed citations

16.

Ikegami, Shota, et al.. (2019). Factors leading to postoperative pain in adolescent idiopathic scoliosis patients including sagittal alignment and lumbar disc degeneration. European Spine Journal. 28(12). 3085–3091. 6 indexed citations

17.

Uehara, Masashi, Jun Takahashi, Shota Ikegami, et al.. (2017). Pedicle Screw Loosening After Posterior Spinal Fusion for Adolescent Idiopathic Scoliosis in Upper and Lower Instrumented Vertebrae Having Major Perforation. Spine. 42(24). 1895–1900. 30 indexed citations

18.

Uehara, Masashi, Jun Takahashi, Shugo Kuraishi, et al.. (2016). Computer-assisted skip pedicle screw fixation for adolescent idiopathic scoliosis. Journal of Orthopaedic Science. 22(2). 218–223. 15 indexed citations

19.

Futatsugi, Toshimasa, et al.. (2015). Early Postoperative Magnetic Resonance Imaging in Detecting Radicular Pain After Lumbar Decompression Surgery. Clinical Spine Surgery A Spine Publication. 30(6). E733–E737. 2 indexed citations

20.

Oba, Hiroki, et al.. (2013). Study of dural sac cross-sectional area in early and late phases after lumbar decompression surgery. The Spine Journal. 13(9). 1088–1094. 13 indexed citations

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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