Andrew A. Sama

6.1k total citations · 1 hit paper
236 papers, 4.4k citations indexed

About

Andrew A. Sama is a scholar working on Surgery, Pathology and Forensic Medicine and Pharmacology. According to data from OpenAlex, Andrew A. Sama has authored 236 papers receiving a total of 4.4k indexed citations (citations by other indexed papers that have themselves been cited), including 184 papers in Surgery, 175 papers in Pathology and Forensic Medicine and 75 papers in Pharmacology. Recurrent topics in Andrew A. Sama's work include Spine and Intervertebral Disc Pathology (175 papers), Musculoskeletal pain and rehabilitation (74 papers) and Spinal Fractures and Fixation Techniques (65 papers). Andrew A. Sama is often cited by papers focused on Spine and Intervertebral Disc Pathology (175 papers), Musculoskeletal pain and rehabilitation (74 papers) and Spinal Fractures and Fixation Techniques (65 papers). Andrew A. Sama collaborates with scholars based in United States, Germany and Japan. Andrew A. Sama's co-authors include Frank P. Cammisa, Federico P. Girardi, Alexander P. Hughes, Federico P. Girardi, Darren R. Lebl, Russel C. Huang, Jennifer Shue, Ichiro Okano, Stephan N. Salzmann and Alexander Aichmair and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Bone and Joint Surgery and Pain.

In The Last Decade

Andrew A. Sama

215 papers receiving 4.2k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Preoperative MRI-based vertebral bone quality (VBQ) score assessment in patients undergoing lumbar spinal fusion

2022 86 citations Stephan N. Salzmann, Ichiro Okano et al. The Spine Journal profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Andrew A. Sama United States	37	3.5k	2.9k	1.0k	675	391	236	4.4k
Timothy R. Kuklo United States	50	6.3k 1.8×	3.8k 1.3×	548 0.5×	479 0.7×	478 1.2×	114	6.8k
Kirkham B. Wood United States	46	6.5k 1.9×	5.1k 1.7×	1.2k 1.2×	777 1.2×	197 0.5×	189	7.8k
Alexander P. Hughes United States	35	3.1k 0.9×	2.8k 0.9×	1.1k 1.1×	725 1.1×	327 0.8×	227	4.0k
William F. Donaldson United States	42	4.3k 1.2×	3.1k 1.1×	823 0.8×	357 0.5×	166 0.4×	136	5.2k
John R. Dimar United States	44	7.8k 2.2×	6.1k 2.1×	1.4k 1.3×	935 1.4×	193 0.5×	158	9.0k
Federico P. Girardi United States	45	4.5k 1.3×	4.4k 1.5×	2.2k 2.1×	1.1k 1.6×	299 0.8×	231	5.7k
Andrew C. Hecht United States	36	1.8k 0.5×	2.3k 0.8×	1.2k 1.2×	301 0.4×	209 0.5×	139	3.1k
Thomas J. Errico United States	50	7.4k 2.1×	5.3k 1.8×	1.7k 1.6×	618 0.9×	130 0.3×	266	8.7k
Peter G. Passias United States	39	5.6k 1.6×	3.9k 1.3×	707 0.7×	629 0.9×	109 0.3×	487	6.3k
William C. Watters United States	42	3.9k 1.1×	2.1k 0.7×	1.2k 1.2×	435 0.6×	240 0.6×	89	4.9k

Countries citing papers authored by Andrew A. Sama

Since Specialization

Citations

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

Fields of papers citing papers by Andrew A. Sama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Andrew A. Sama. 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 Andrew A. Sama. The network helps show where Andrew A. Sama may publish in the future.

Co-authorship network of co-authors of Andrew A. Sama

This figure shows the co-authorship network connecting the top 25 collaborators of Andrew A. Sama. A scholar is included among the top collaborators of Andrew A. Sama 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 Andrew A. Sama. Andrew A. Sama 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

Burkhard, Marco D., Alexander Mielke, Erika Chiapparelli, et al.. (2025). 3D-Printed Titanium: Game-Changer for Standalone Lateral Lumbar Interbody Fusion? An Analysis of Risk Factors for Revision Surgery. Global Spine Journal. 3054322759–3054322759. 1 indexed citations

Zhu, Jiaqi, Jennifer Shue, Andrew A. Sama, et al.. (2025). The Association Between Preoperative Cannabis Use and Anxiety, Pain Scores and Opioid Consumption in Patients Undergoing Spinal Fusion: A Retrospective Cohort Study. Global Spine Journal. 15(8). 3656–3663.

Schönnagel, Lukas, Jiaqi Zhu, Erika Chiapparelli, et al.. (2024). Association between paraspinal muscle degeneration and degenerative lumbar spondylolisthesis. SHILAP Revista de lepidopterología. 4. 103060–103060. 1 indexed citations

Evangelisti, Gisberto, Marco D. Burkhard, Koki Tsuchiya, et al.. (2024). The disaggregation of the Oswestry Disability Index in patients undergoing lumbar surgery for degenerative lumbar spondylolisthesis. The Spine Journal. 25(1). 99–110. 1 indexed citations

Burkhard, Marco D., Koki Tsuchiya, Lukas Schönnagel, et al.. (2024). Multifidus Degeneration: The Key Imaging Predictor of Adjacent Segment Disease. Global Spine Journal. 15(4). 2348–2358. 8 indexed citations

Camino-Willhuber, Gastón, Lukas Schönnagel, Erika Chiapparelli, et al.. (2024). The Modified 5-Factor Frailty Score May Not be Useful in Predicting Complications and Unplanned Readmission After 1-Level or 2-Level Anterior Cervical Decompression and Fusion. HSS Journal® The Musculoskeletal Journal of Hospital for Special Surgery. 21(1). 49–54.

Mancuso, Carol A., Roland Duculan, Frank P. Cammisa, et al.. (2024). Associations between surgeons’ preoperative expectations of lumbar surgery and patient-reported 2-year outcomes. European Spine Journal. 33(9). 3381–3387.

Muellner, Maximilian, Henryk Haffer, Erika Chiapparelli, et al.. (2023). Fat infiltration of the posterior paraspinal muscles is inversely associated with the fat infiltration of the psoas muscle: a potential compensatory mechanism in the lumbar spine. BMC Musculoskeletal Disorders. 24(1). 846–846. 5 indexed citations

Moser, Manuel, Dominik Adl Amini, Lisa Oezel, et al.. (2023). Changes in psoas and posterior paraspinal muscle morphology after standalone lateral lumbar interbody fusion: a quantitative MRI-based analysis. European Spine Journal. 32(5). 1704–1713. 6 indexed citations

10.

Sama, Andrew A., et al.. (2023). Cervical Myelopathy: Diagnosis and Surgical Strategies. 1(4).

11.

Duculan, Roland, Alex Fong, Frank P. Cammisa, et al.. (2023). High preoperative expectations and postoperative fulfillment of expectations two years after decompression alone and decompression plus fusion for lumbar degenerative spondylolisthesis. The Spine Journal. 23(5). 665–674. 9 indexed citations

12.

Moser, Manuel, Dominik Adl Amini, Conor Jones, et al.. (2022). The predictive value of psoas and paraspinal muscle parameters measured on MRI for severe cage subsidence after standalone lateral lumbar interbody fusion. The Spine Journal. 23(1). 42–53. 29 indexed citations

13.

Salzmann, Stephan N., Ichiro Okano, Conor Jones, et al.. (2022). Preoperative MRI-based vertebral bone quality (VBQ) score assessment in patients undergoing lumbar spinal fusion. The Spine Journal. 22(8). 1301–1308. 86 indexed citations breakdown →

14.

Muellner, Maximilian, Henryk Haffer, Manuel Moser, et al.. (2022). Paraspinal musculature impairment is associated with spinopelvic and spinal malalignment in patients undergoing lumbar fusion surgery. The Spine Journal. 22(12). 2006–2016. 22 indexed citations

15.

Soffin, Ellen M., Ichiro Okano, Lisa Oezel, et al.. (2021). Impact of ultrasound-guided erector spinae plane block on outcomes after lumbar spinal fusion: a retrospective propensity score matched study of 242 patients. Regional Anesthesia & Pain Medicine. 47(2). 79–86. 21 indexed citations

16.

Amini, Dominik Adl, Manuel Moser, Lisa Oezel, et al.. (2021). Development of a decision-making pathway for utilizing standalone lateral lumbar interbody fusion. European Spine Journal. 31(7). 1611–1620. 6 indexed citations

17.

Moser, Manuel, Dominik Adl Amini, Ichiro Okano, et al.. (2021). Trabecular volumetric bone mineral density of the occipital bone at preferred screw placement sites measured by quantitative computed tomography. Journal of Orthopaedic Research®. 40(8). 1909–1917. 1 indexed citations

18.

Salzmann, Stephan N., Ichiro Okano, Conor Jones, et al.. (2021). Thoracic bone mineral density measured by quantitative computed tomography in patients undergoing spine surgery. The Spine Journal. 21(11). 1866–1872. 11 indexed citations

19.

Reisener, Marie–Jacqueline, Ichiro Okano, Jiaqi Zhu, et al.. (2021). Workers' Compensation Status in Association with a High NDI Score Negatively Impacts Post-Operative Dysphagia and Dysphonia Following Anterior Cervical Fusion. World Neurosurgery. 154. e39–e45. 3 indexed citations

20.

Salzmann, Stephan N., Gary A. Fantini, Ichiro Okano, et al.. (2019). Mini-Open Access for Lateral Lumbar Interbody Fusion. JBJS Essential Surgical Techniques. 9(4). e37–e37. 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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