ALEXANDER ROPPER

Concepts (256)

Concepts are derived automatically from a person's publications.
Concepts are listed by decreasing relevance which is based on many factors, including how many publications the person wrote about that topic, how long ago those publications were written, and how many publications other people have written on that same topic.


Name Number of Publications Most Recent Publication Publications by All Authors Concept Score Why?
Spinal Fusion
13
2025
114
5.400
Why?
Spinal Cord Injuries
8
2020
261
2.150
Why?
Cervical Vertebrae
8
2025
117
1.760
Why?
Atlanto-Axial Joint
3
2021
22
1.460
Why?
Pedicle Screws
2
2022
3
1.390
Why?
Spinal Diseases
2
2021
46
1.390
Why?
Intervertebral Disc Displacement
3
2025
19
1.370
Why?
Bone Transplantation
5
2021
50
1.290
Why?
Lumbar Vertebrae
6
2025
113
1.190
Why?
Spinal Cord Compression
3
2017
33
1.080
Why?
Intervertebral Disc Degeneration
5
2018
17
1.070
Why?
Central Nervous System Vascular Malformations
2
2021
17
1.070
Why?
Spinal Cord Diseases
2
2021
35
1.060
Why?
Surgical Wound Infection
2
2022
272
0.950
Why?
Laminectomy
4
2020
24
0.930
Why?
Diskectomy
1
2025
13
0.920
Why?
Embolization, Therapeutic
2
2021
225
0.910
Why?
Surgery, Computer-Assisted
2
2022
65
0.900
Why?
Thoracic Vertebrae
7
2025
68
0.860
Why?
Spinal Neoplasms
3
2025
74
0.850
Why?
Occipital Bone
3
2021
21
0.830
Why?
Tomography, X-Ray Computed
8
2025
2171
0.820
Why?
Neck Pain
1
2022
19
0.780
Why?
Mesenchymal Stem Cell Transplantation
3
2019
87
0.760
Why?
Spinal Cord Neoplasms
3
2019
75
0.750
Why?
Physical Examination
1
2022
166
0.720
Why?
Kyphosis
1
2021
22
0.700
Why?
Surgical Flaps
2
2022
192
0.690
Why?
Radiation Injuries
1
2021
158
0.640
Why?
Meningocele
1
2019
18
0.630
Why?
Postoperative Complications
8
2019
3146
0.620
Why?
Pseudarthrosis
1
2019
6
0.620
Why?
Spondylolisthesis
1
2018
6
0.600
Why?
Neuronavigation
1
2018
10
0.600
Why?
Neural Stem Cells
2
2016
151
0.560
Why?
Stem Cell Transplantation
2
2016
248
0.540
Why?
Epidural Abscess
1
2017
12
0.530
Why?
Tissue Scaffolds
4
2019
79
0.530
Why?
Meningomyelocele
1
2019
254
0.500
Why?
Humans
53
2025
132105
0.490
Why?
Spinal Fractures
3
2025
46
0.490
Why?
Disease Management
2
2021
564
0.480
Why?
Head and Neck Neoplasms
1
2021
615
0.480
Why?
Spinal Cord
3
2018
276
0.480
Why?
Neurosurgical Procedures
5
2022
320
0.430
Why?
Fractures, Compression
3
2025
11
0.400
Why?
Genetic Therapy
2
2016
720
0.380
Why?
Angiography
1
2012
209
0.380
Why?
Decompressive Craniectomy
1
2011
15
0.370
Why?
Bone Morphogenetic Proteins
1
2012
126
0.370
Why?
Corynebacterium Infections
1
2011
5
0.360
Why?
Body Fluids
1
2011
47
0.360
Why?
Glioma
1
2016
534
0.360
Why?
Image Interpretation, Computer-Assisted
1
2012
237
0.350
Why?
Drainage
1
2012
265
0.340
Why?
Klippel-Feil Syndrome
2
2020
8
0.340
Why?
Radiation Dosage
1
2011
146
0.330
Why?
Ossification of Posterior Longitudinal Ligament
3
2016
3
0.330
Why?
Polymorphism, Single Nucleotide
6
2018
2851
0.330
Why?
Female
32
2025
70680
0.330
Why?
Abscess
1
2011
140
0.320
Why?
Low Back Pain
2
2022
40
0.320
Why?
Imaging, Three-Dimensional
1
2012
391
0.320
Why?
Brain Ischemia
2
2012
277
0.320
Why?
Occupational Exposure
1
2011
131
0.320
Why?
Minimally Invasive Surgical Procedures
1
2011
194
0.310
Why?
Spine
2
2021
147
0.290
Why?
Rats, Sprague-Dawley
5
2019
1225
0.280
Why?
Osteoporotic Fractures
2
2018
30
0.270
Why?
Absorbable Implants
2
2018
26
0.270
Why?
Adult
19
2025
31557
0.270
Why?
Male
26
2025
64918
0.270
Why?
Middle Aged
19
2025
28936
0.260
Why?
Aged
13
2025
21413
0.260
Why?
Hindlimb
2
2017
78
0.250
Why?
Acute Disease
3
2025
1161
0.240
Why?
Retrospective Studies
9
2025
17374
0.230
Why?
Spinal Injuries
1
2025
33
0.230
Why?
Disease Models, Animal
1
2015
4694
0.220
Why?
Stroke
2
2012
1081
0.220
Why?
Physicians
1
2011
637
0.220
Why?
Genetic Predisposition to Disease
5
2017
3358
0.210
Why?
Transplantation, Autologous
2
2021
285
0.200
Why?
Magnetic Resonance Imaging
4
2025
3854
0.200
Why?
Wounds, Nonpenetrating
1
2025
222
0.200
Why?
Rats
4
2019
3612
0.200
Why?
Joint Instability
2
2020
59
0.190
Why?
Diagnosis, Differential
3
2022
1966
0.190
Why?
Hydrocephalus
2
2017
276
0.190
Why?
Lordosis
1
2021
7
0.180
Why?
Foramen Magnum
1
2021
5
0.180
Why?
Neurosurgery
1
2022
82
0.180
Why?
Scapula
1
2021
15
0.180
Why?
Ilium
1
2021
22
0.180
Why?
Cadaver
1
2021
120
0.170
Why?
Ribs
1
2021
54
0.170
Why?
Spinal Stenosis
1
2020
10
0.170
Why?
Decompression, Surgical
3
2020
92
0.160
Why?
Prospective Studies
2
2022
6530
0.160
Why?
MicroRNAs
2
2017
917
0.160
Why?
Subdural Effusion
1
2019
8
0.160
Why?
Polymorphism, Genetic
2
2013
803
0.150
Why?
Coculture Techniques
2
2017
239
0.150
Why?
Contusions
1
2018
16
0.150
Why?
Intraoperative Neurophysiological Monitoring
1
2018
15
0.150
Why?
Therapeutic Irrigation
1
2018
45
0.150
Why?
Thymidylate Synthase
1
2018
21
0.140
Why?
Osteoporosis, Postmenopausal
1
2018
31
0.140
Why?
Arachnoid Cysts
1
2017
7
0.140
Why?
Methylenetetrahydrofolate Reductase (NADPH2)
1
2018
64
0.140
Why?
Dura Mater
1
2017
26
0.140
Why?
Cerebral Ventricle Neoplasms
1
2017
15
0.140
Why?
Hemangioma, Cavernous, Central Nervous System
1
2017
20
0.130
Why?
Third Ventricle
1
2017
32
0.130
Why?
Animals
8
2019
34953
0.130
Why?
Hemangioma, Cavernous
1
2017
20
0.130
Why?
Polyglycolic Acid
1
2017
23
0.130
Why?
Trauma Severity Indices
1
2017
89
0.130
Why?
Craniotomy
2
2020
108
0.130
Why?
Flucytosine
1
2016
17
0.130
Why?
Chondrosarcoma
1
2016
13
0.130
Why?
Ganglia, Spinal
1
2017
69
0.130
Why?
Cytosine Deaminase
1
2016
21
0.130
Why?
Hyaluronic Acid
1
2017
109
0.130
Why?
Locomotion
1
2017
62
0.130
Why?
Neuroimaging
1
2020
375
0.130
Why?
Thymidine Kinase
1
2016
90
0.130
Why?
Osteotomy
1
2016
42
0.130
Why?
Ganciclovir
1
2016
101
0.130
Why?
Lactic Acid
1
2017
154
0.120
Why?
Fluorouracil
1
2016
139
0.120
Why?
Scoliosis
1
2017
143
0.120
Why?
Spinal Dysraphism
1
2019
274
0.120
Why?
Reoperation
1
2019
854
0.120
Why?
Genetic Engineering
1
2016
164
0.120
Why?
Reflex
1
2015
34
0.120
Why?
Total Disc Replacement
1
2015
2
0.120
Why?
Cervical Cord
1
2015
10
0.120
Why?
Joint Prosthesis
1
2015
18
0.120
Why?
Lipopolysaccharides
1
2017
306
0.110
Why?
Bone Diseases, Metabolic
1
2015
58
0.110
Why?
Myelin Sheath
1
2015
125
0.110
Why?
Recovery of Function
1
2017
462
0.110
Why?
Random Allocation
1
2015
432
0.110
Why?
Cranial Sutures
1
2014
33
0.110
Why?
Psychomotor Performance
1
2015
182
0.110
Why?
Republic of Korea
4
2016
52
0.110
Why?
Case-Control Studies
6
2018
3418
0.100
Why?
Population
1
2013
24
0.100
Why?
Vitamin K Epoxide Reductases
1
2013
7
0.100
Why?
Bone Marrow Cells
1
2015
263
0.100
Why?
Radiography
2
2015
818
0.100
Why?
Analysis of Variance
1
2015
1008
0.100
Why?
Xenograft Model Antitumor Assays
1
2016
998
0.100
Why?
Blood Patch, Epidural
1
2012
6
0.100
Why?
Intracranial Hypotension
1
2012
12
0.100
Why?
Sesquiterpenes
1
2013
26
0.100
Why?
Alkaloids
1
2013
37
0.100
Why?
Skull
1
2014
144
0.100
Why?
Nitric Oxide Synthase Type III
1
2013
190
0.100
Why?
Intracranial Arteriovenous Malformations
1
2012
33
0.100
Why?
Transforming Growth Factor beta1
1
2013
134
0.090
Why?
Sclerosis
1
2012
38
0.090
Why?
Endoscopy
1
2014
281
0.090
Why?
Fecal Incontinence
1
2012
78
0.090
Why?
Urinary Incontinence
1
2012
79
0.090
Why?
Vascular Endothelial Growth Factor Receptor-2
1
2012
62
0.090
Why?
Brain Infarction
1
2012
30
0.090
Why?
Craniosynostoses
1
2014
134
0.090
Why?
Internship and Residency
1
2022
1252
0.090
Why?
Moyamoya Disease
1
2012
42
0.090
Why?
Melanoma
1
2019
954
0.090
Why?
Cerebrovascular Disorders
1
2012
119
0.090
Why?
Radiosurgery
1
2012
147
0.090
Why?
Fluoroscopy
1
2011
100
0.090
Why?
Vascular Endothelial Growth Factor A
1
2013
444
0.080
Why?
Prognosis
1
2020
5008
0.080
Why?
Pain
1
2013
462
0.080
Why?
Aged, 80 and over
1
2021
7119
0.080
Why?
Genotype
4
2017
2706
0.070
Why?
Back Pain
2
2022
31
0.070
Why?
Treatment Outcome
8
2017
13017
0.070
Why?
Time Factors
2
2015
6445
0.070
Why?
Inflammation
1
2015
1522
0.070
Why?
Follow-Up Studies
4
2017
5399
0.060
Why?
Pain Measurement
2
2017
351
0.060
Why?
Haplotypes
2
2016
545
0.050
Why?
Gene Frequency
2
2016
751
0.050
Why?
Personnel Staffing and Scheduling
1
2022
84
0.050
Why?
Machine Learning
1
2025
347
0.040
Why?
Workload
1
2022
150
0.040
Why?
Evidence-Based Medicine
1
2025
670
0.040
Why?
Atlanto-Occipital Joint
1
2020
6
0.040
Why?
Societies, Medical
1
2025
778
0.040
Why?
Odontoid Process
1
2020
10
0.040
Why?
Young Adult
4
2017
9940
0.040
Why?
Anti-Inflammatory Agents, Non-Steroidal
1
2022
305
0.040
Why?
Alleles
2
2016
1684
0.040
Why?
Bone Wires
1
2019
7
0.040
Why?
Hospitals
1
2022
438
0.040
Why?
Bone Screws
1
2019
53
0.040
Why?
Disease Progression
1
2025
2227
0.040
Why?
Cell Differentiation
2
2017
1975
0.040
Why?
Polyesters
1
2018
41
0.040
Why?
Polyradiculopathy
1
2017
2
0.040
Why?
Injections, Intralesional
1
2017
47
0.030
Why?
Intervertebral Disc
1
2017
14
0.030
Why?
Lysine
1
2018
190
0.030
Why?
3' Untranslated Regions
1
2018
160
0.030
Why?
Neoplasms, Second Primary
1
2019
149
0.030
Why?
Education, Medical, Graduate
1
2022
564
0.030
Why?
Postmenopause
1
2017
153
0.030
Why?
Headache
1
2017
110
0.030
Why?
Water
1
2017
196
0.030
Why?
Neurologic Examination
1
2016
202
0.030
Why?
Polymers
1
2016
110
0.030
Why?
Cell Engineering
1
2015
20
0.030
Why?
Lewis X Antigen
1
2015
11
0.030
Why?
Transcription Factor HES-1
1
2015
20
0.030
Why?
CD24 Antigen
1
2015
33
0.030
Why?
Dipeptides
1
2015
65
0.030
Why?
Receptor, Notch1
1
2015
78
0.030
Why?
Adipose Tissue
1
2017
511
0.030
Why?
Disability Evaluation
1
2015
194
0.030
Why?
Microscopy, Confocal
1
2015
368
0.030
Why?
Orthopedic Procedures
1
2014
75
0.030
Why?
Polymorphism, Restriction Fragment Length
1
2013
140
0.030
Why?
Feasibility Studies
1
2016
827
0.030
Why?
Chronic Disease
1
2017
1226
0.020
Why?
Patient Safety
1
2017
438
0.020
Why?
Urinary Bladder Diseases
1
2012
34
0.020
Why?
Survival
1
2012
19
0.020
Why?
Basic Helix-Loop-Helix Transcription Factors
1
2015
381
0.020
Why?
Cerebral Angiography
1
2012
107
0.020
Why?
Intracranial Hemorrhages
1
2012
81
0.020
Why?
Pilot Projects
1
2016
1451
0.020
Why?
Glasgow Coma Scale
1
2012
199
0.020
Why?
Subarachnoid Hemorrhage
1
2012
70
0.020
Why?
Accidents, Traffic
1
2012
109
0.020
Why?
Homeodomain Proteins
1
2015
573
0.020
Why?
Skin Neoplasms
1
2019
897
0.020
Why?
Temporal Lobe
1
2012
118
0.020
Why?
Models, Biological
1
2016
1441
0.020
Why?
Proteins
1
2016
1038
0.020
Why?
Behavior, Animal
1
2013
506
0.020
Why?
Adolescent
3
2013
20532
0.020
Why?
Genetic Association Studies
1
2013
856
0.020
Why?
United States
1
2025
11627
0.020
Why?
Sex Factors
1
2013
1349
0.020
Why?
Cells, Cultured
1
2015
3061
0.020
Why?
Brain Injuries
1
2012
715
0.020
Why?
Seizures
1
2012
895
0.020
Why?
Signal Transduction
1
2015
4725
0.010
Why?
Brain Neoplasms
1
2012
1411
0.010
Why?
Infant
1
2014
13039
0.010
Why?
Child
1
2012
25758
0.010
Why?
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Concepts (256)
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Co-Authors (17)
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