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
5.380
Why?
Spinal Cord Injuries
8
2020
287
2.120
Why?
Cervical Vertebrae
8
2025
117
1.760
Why?
Atlanto-Axial Joint
3
2021
22
1.450
Why?
Spinal Diseases
2
2021
46
1.390
Why?
Pedicle Screws
2
2022
3
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
1.060
Why?
Spinal Cord Diseases
2
2021
35
1.050
Why?
Surgical Wound Infection
2
2022
272
0.940
Why?
Laminectomy
4
2020
24
0.930
Why?
Diskectomy
1
2025
13
0.920
Why?
Embolization, Therapeutic
2
2021
223
0.900
Why?
Surgery, Computer-Assisted
2
2022
68
0.890
Why?
Thoracic Vertebrae
7
2025
69
0.860
Why?
Spinal Neoplasms
3
2025
75
0.850
Why?
Occipital Bone
3
2021
21
0.830
Why?
Tomography, X-Ray Computed
8
2025
2166
0.810
Why?
Neck Pain
1
2022
19
0.780
Why?
Mesenchymal Stem Cell Transplantation
3
2019
87
0.760
Why?
Spinal Cord Neoplasms
3
2019
72
0.750
Why?
Physical Examination
1
2022
165
0.720
Why?
Kyphosis
1
2021
22
0.700
Why?
Surgical Flaps
2
2022
189
0.690
Why?
Radiation Injuries
1
2021
158
0.640
Why?
Meningocele
1
2019
18
0.630
Why?
Postoperative Complications
8
2019
3139
0.620
Why?
Pseudarthrosis
1
2019
6
0.620
Why?
Spondylolisthesis
1
2018
6
0.590
Why?
Neuronavigation
1
2018
10
0.590
Why?
Neural Stem Cells
2
2016
149
0.560
Why?
Stem Cell Transplantation
2
2016
249
0.540
Why?
Epidural Abscess
1
2017
12
0.530
Why?
Tissue Scaffolds
4
2019
78
0.530
Why?
Meningomyelocele
1
2019
253
0.500
Why?
Humans
53
2025
131924
0.490
Why?
Spinal Fractures
3
2025
47
0.480
Why?
Disease Management
2
2021
562
0.480
Why?
Spinal Cord
3
2018
267
0.480
Why?
Head and Neck Neoplasms
1
2021
620
0.470
Why?
Neurosurgical Procedures
5
2022
314
0.430
Why?
Fractures, Compression
3
2025
12
0.400
Why?
Genetic Therapy
2
2016
719
0.380
Why?
Angiography
1
2012
208
0.370
Why?
Decompressive Craniectomy
1
2011
15
0.370
Why?
Bone Morphogenetic Proteins
1
2012
126
0.360
Why?
Corynebacterium Infections
1
2011
5
0.360
Why?
Body Fluids
1
2011
47
0.360
Why?
Glioma
1
2016
529
0.360
Why?
Image Interpretation, Computer-Assisted
1
2012
227
0.350
Why?
Drainage
1
2012
262
0.350
Why?
Klippel-Feil Syndrome
2
2020
8
0.340
Why?
Radiation Dosage
1
2011
146
0.330
Why?
Polymorphism, Single Nucleotide
6
2018
2850
0.330
Why?
Ossification of Posterior Longitudinal Ligament
3
2016
3
0.330
Why?
Female
32
2025
70584
0.330
Why?
Imaging, Three-Dimensional
1
2012
376
0.320
Why?
Abscess
1
2011
139
0.320
Why?
Low Back Pain
2
2022
40
0.320
Why?
Brain Ischemia
2
2012
278
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
1221
0.280
Why?
Osteoporotic Fractures
2
2018
30
0.270
Why?
Absorbable Implants
2
2018
26
0.270
Why?
Male
26
2025
64870
0.270
Why?
Adult
19
2025
31536
0.270
Why?
Middle Aged
19
2025
28943
0.260
Why?
Aged
13
2025
21385
0.260
Why?
Hindlimb
2
2017
76
0.240
Why?
Acute Disease
3
2025
1160
0.240
Why?
Retrospective Studies
9
2025
17374
0.230
Why?
Spinal Injuries
1
2025
33
0.230
Why?
Disease Models, Animal
1
2015
4680
0.220
Why?
Stroke
2
2012
1083
0.220
Why?
Physicians
1
2011
641
0.210
Why?
Genetic Predisposition to Disease
5
2017
3351
0.210
Why?
Transplantation, Autologous
2
2021
286
0.200
Why?
Magnetic Resonance Imaging
4
2025
3829
0.200
Why?
Wounds, Nonpenetrating
1
2025
221
0.200
Why?
Rats
4
2019
3608
0.190
Why?
Diagnosis, Differential
3
2022
1949
0.190
Why?
Joint Instability
2
2020
59
0.190
Why?
Hydrocephalus
2
2017
277
0.180
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
119
0.170
Why?
Ribs
1
2021
54
0.170
Why?
Spinal Stenosis
1
2020
10
0.170
Why?
Decompression, Surgical
3
2020
91
0.160
Why?
MicroRNAs
2
2017
916
0.160
Why?
Prospective Studies
2
2022
6569
0.160
Why?
Subdural Effusion
1
2019
8
0.160
Why?
Polymorphism, Genetic
2
2013
803
0.150
Why?
Coculture Techniques
2
2017
234
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
25
0.140
Why?
Cerebral Ventricle Neoplasms
1
2017
14
0.130
Why?
Hemangioma, Cavernous, Central Nervous System
1
2017
20
0.130
Why?
Third Ventricle
1
2017
31
0.130
Why?
Animals
8
2019
34781
0.130
Why?
Hemangioma, Cavernous
1
2017
20
0.130
Why?
Polyglycolic Acid
1
2017
23
0.130
Why?
Trauma Severity Indices
1
2017
90
0.130
Why?
Craniotomy
2
2020
107
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
108
0.130
Why?
Locomotion
1
2017
61
0.130
Why?
Neuroimaging
1
2020
376
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
153
0.120
Why?
Fluorouracil
1
2016
138
0.120
Why?
Scoliosis
1
2017
143
0.120
Why?
Spinal Dysraphism
1
2019
274
0.120
Why?
Reoperation
1
2019
851
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
0.110
Why?
Lipopolysaccharides
1
2017
306
0.110
Why?
Bone Diseases, Metabolic
1
2015
57
0.110
Why?
Recovery of Function
1
2017
461
0.110
Why?
Myelin Sheath
1
2015
125
0.110
Why?
Random Allocation
1
2015
430
0.110
Why?
Cranial Sutures
1
2014
33
0.110
Why?
Psychomotor Performance
1
2015
182
0.110
Why?
Republic of Korea
4
2016
53
0.110
Why?
Case-Control Studies
6
2018
3409
0.100
Why?
Population
1
2013
23
0.100
Why?
Vitamin K Epoxide Reductases
1
2013
7
0.100
Why?
Bone Marrow Cells
1
2015
258
0.100
Why?
Radiography
2
2015
819
0.100
Why?
Analysis of Variance
1
2015
1011
0.100
Why?
Xenograft Model Antitumor Assays
1
2016
990
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
143
0.100
Why?
Nitric Oxide Synthase Type III
1
2013
192
0.100
Why?
Intracranial Arteriovenous Malformations
1
2012
33
0.090
Why?
Transforming Growth Factor beta1
1
2013
133
0.090
Why?
Sclerosis
1
2012
31
0.090
Why?
Fecal Incontinence
1
2012
78
0.090
Why?
Urinary Incontinence
1
2012
78
0.090
Why?
Endoscopy
1
2014
288
0.090
Why?
Vascular Endothelial Growth Factor Receptor-2
1
2012
62
0.090
Why?
Craniosynostoses
1
2014
130
0.090
Why?
Brain Infarction
1
2012
30
0.090
Why?
Internship and Residency
1
2022
1247
0.090
Why?
Moyamoya Disease
1
2012
42
0.090
Why?
Melanoma
1
2019
950
0.090
Why?
Cerebrovascular Disorders
1
2012
118
0.090
Why?
Radiosurgery
1
2012
147
0.090
Why?
Fluoroscopy
1
2011
99
0.080
Why?
Vascular Endothelial Growth Factor A
1
2013
443
0.080
Why?
Prognosis
1
2020
5007
0.080
Why?
Pain
1
2013
457
0.080
Why?
Aged, 80 and over
1
2021
7097
0.080
Why?
Genotype
4
2017
2696
0.070
Why?
Back Pain
2
2022
31
0.070
Why?
Treatment Outcome
8
2017
12991
0.070
Why?
Time Factors
2
2015
6440
0.070
Why?
Inflammation
1
2015
1519
0.070
Why?
Follow-Up Studies
4
2017
5408
0.060
Why?
Pain Measurement
2
2017
355
0.060
Why?
Haplotypes
2
2016
544
0.050
Why?
Gene Frequency
2
2016
749
0.050
Why?
Personnel Staffing and Scheduling
1
2022
84
0.050
Why?
Machine Learning
1
2025
345
0.040
Why?
Workload
1
2022
151
0.040
Why?
Evidence-Based Medicine
1
2025
662
0.040
Why?
Societies, Medical
1
2025
777
0.040
Why?
Atlanto-Occipital Joint
1
2020
6
0.040
Why?
Odontoid Process
1
2020
10
0.040
Why?
Young Adult
4
2017
9952
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
2221
0.040
Why?
Cell Differentiation
2
2017
1960
0.040
Why?
Polyesters
1
2018
41
0.040
Why?
Polyradiculopathy
1
2017
2
0.040
Why?
Lysine
1
2018
185
0.030
Why?
Injections, Intralesional
1
2017
47
0.030
Why?
Intervertebral Disc
1
2017
14
0.030
Why?
3' Untranslated Regions
1
2018
166
0.030
Why?
Education, Medical, Graduate
1
2022
557
0.030
Why?
Neoplasms, Second Primary
1
2019
149
0.030
Why?
Postmenopause
1
2017
153
0.030
Why?
Headache
1
2017
110
0.030
Why?
Water
1
2017
195
0.030
Why?
Neurologic Examination
1
2016
202
0.030
Why?
Polymers
1
2016
108
0.030
Why?
Cell Engineering
1
2015
20
0.030
Why?
Transcription Factor HES-1
1
2015
18
0.030
Why?
Lewis X Antigen
1
2015
11
0.030
Why?
CD24 Antigen
1
2015
33
0.030
Why?
Dipeptides
1
2015
65
0.030
Why?
Receptor, Notch1
1
2015
76
0.030
Why?
Adipose Tissue
1
2017
504
0.030
Why?
Disability Evaluation
1
2015
198
0.030
Why?
Microscopy, Confocal
1
2015
363
0.030
Why?
Orthopedic Procedures
1
2014
74
0.030
Why?
Polymorphism, Restriction Fragment Length
1
2013
140
0.030
Why?
Feasibility Studies
1
2016
820
0.030
Why?
Chronic Disease
1
2017
1233
0.020
Why?
Patient Safety
1
2017
439
0.020
Why?
Urinary Bladder Diseases
1
2012
34
0.020
Why?
Survival
1
2012
18
0.020
Why?
Basic Helix-Loop-Helix Transcription Factors
1
2015
373
0.020
Why?
Cerebral Angiography
1
2012
107
0.020
Why?
Intracranial Hemorrhages
1
2012
81
0.020
Why?
Pilot Projects
1
2016
1440
0.020
Why?
Glasgow Coma Scale
1
2012
200
0.020
Why?
Subarachnoid Hemorrhage
1
2012
70
0.020
Why?
Accidents, Traffic
1
2012
111
0.020
Why?
Homeodomain Proteins
1
2015
574
0.020
Why?
Skin Neoplasms
1
2019
897
0.020
Why?
Temporal Lobe
1
2012
118
0.020
Why?
Models, Biological
1
2016
1443
0.020
Why?
Proteins
1
2016
1035
0.020
Why?
Adolescent
3
2013
20535
0.020
Why?
Behavior, Animal
1
2013
506
0.020
Why?
Genetic Association Studies
1
2013
852
0.020
Why?
United States
1
2025
11648
0.020
Why?
Sex Factors
1
2013
1351
0.020
Why?
Cells, Cultured
1
2015
3037
0.020
Why?
Brain Injuries
1
2012
716
0.020
Why?
Seizures
1
2012
893
0.020
Why?
Brain Neoplasms
1
2012
1378
0.010
Why?
Signal Transduction
1
2015
4703
0.010
Why?
Infant
1
2014
13047
0.010
Why?
Child
1
2012
25761
0.010
Why?
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Concepts (256)
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