Freitag D, Lawson McLean A, Simon M, Koch A, Grube S, Walter J, Kalff R, Ewald C
NANOG overexpression and its correlation with stem cell and differentiation markers in meningiomas of different WHO grades.
Mol Carcinog. 2017 Aug; 56(8):1953-1964

Safatli DA, Günther A, Schlattmann P, Schwarz F, Kalff R, Ewald C
Predictors of 30-day mortality in patients with spontaneous primary intracerebral hemorrhage.
Surg Neurol Int. 2016 Aug 1;7(Suppl 18):S510-7.

Sakr Y, Dünisch P, Santos C, Matthes L, Zeidan M, Reinhart K, Kalff R, Ewald C
Poor outcome is associated with less negative fluid balance in patients with aneurysmal subarachnoid hemorrhage treated with prophylactic vasopressor-induced hypertension.
Ann Intensive Care. 2016 Dec;6(1):25. doi: 10.1186/s13613-016-0128-6. Epub 2016 Mar 31.

Schwarz F, Loos F, Dünisch P, Sakr Y, Safatli DA, Kalff R, Ewald C
Risk factors for reoperation after initial burr hole trephination in chronic subdural hematomas.
Clin Neurol Neurosurg. 2015 Aug 5;138:66-71.

Schwarz F, Dünisch P, Walter J, Sakr Y, Kalff R, Ewald C
Cranioplasty after decompressive craniectomy - is there a rationale for an initial artifical bone-substitute implant? A single center experience after 631 procedures
J Neurosurg. 2016 Mar;124(3):710-5.

Hagel S, Bruns T, Pletz MW, Engel C, Kalff R, Ewald C
External Ventricular Drain Infections: Risk Factors and Outcome.
Interdiscip Perspect Infect Dis. 2014; 2014:708531

Grube S, Dünisch P, Freitag D, Klausnitzer M, Sakr Y, Walter J, Kalff R, Ewald C
Overexpression of fatty acid synthase in human gliomas correlates with the WHO tumor grade and inhibition with Orlistat reduces cell viability and triggers apoptosis.
J Neurooncol. 2014, 118(2):277-87

Waschke A, Hartmann C, Walter J, Dünisch P, Wahnschaff F, Kalff R, Ewald C.
Denervation and atrophy of paraspinal muscles after open lumbar interbody fusion is associated with clinical outcome-electromyographic and CT-volumetric investigation of 30 patients.
Acta Neurochir (Wien). 2014, 156(2):235-44

Feierabend D, Walter J, Grube S, Herbold C, Beetz C, Kalff R, Ewald C
Methylation-specific multiplex ligation-dependent probe amplification and its impact on clinical findings in juvenile medulloblastomas.
J Neurooncol. 2014, 116(2):213-20

Ewald C, Duenisch P, Walter J, Götz T, Witte OW, Kalff R, Günther A.
Bone Flap Necrosis After Decompressive Hemicraniectomy for Malignant Middle Cerebral Artery Infarction.
Neurocrit Care. 2014, 20(1):91-7

Waschke A, Kaczor S, Walter J, Duenisch P, Kalff R, Ewald C
Expandable titanium cages for anterior column cervical reconstruction and their effect on sagittal profile: a review of 48 cases.
Acta Neurochir (Wien). 2013, 155(5):801-7

Dünisch P, Walter J, Sakr Y, Kalff R, Waschke A, Ewald C
Risk factors of aseptic bone resorption: a study after autologous bone flap reinsertion due to decompressive craniotomy.
J Neurosurg. 2013, 118(5):1141-7

Waschke A, Walter J, Duenisch P, Kalff R, Ewald C.
Anterior Cervical Intercorporal Fusion in Patients With Osteoporotic or Tumorous Fractures Using a Cement Augmented Cervical Plate System: First Results of a Prospective Single Center Study.
J Spinal Disord Tech. 2013, 26(3): E112-7

Waschke A, Walter J, Duenisch P, Reichart R, Kalff R, Ewald C
CT-navigation versus fluoroscopy-guided placement of pedicle screws at the thoracolumbar spine: single center experience of 4,500 screws.
Eur Spine J. 2013, 22(3):654-60.

Walter J, Haciyakupoglu E, Waschke A, Kalff R, Ewald C
Cement leakage as a possible complication of balloon kyphoplasty-is there a difference between osteoporotic compression fractures (AO type A1) and incomplete burst fractures (AO type A3.1)?
Acta Neurochir (Wien). 2012, 154(2):313-9

Walter J, Reichart R, Waschke A, Kalff R, Ewald C
Palliative considerations in the surgical treatment of spinal metastases : Evaluation of posterolateral decompression combined with posterior instrumentation.
J Cancer Res Clin Oncol. 2012, 138(2):301-10

Walter J, Kuhn SA, Waschke A, Kalff R, Ewald C
Operative treatment of subcortical metastatic tumours in the central region.
J Neurooncol. 2011, 103(3): 567-73

Walter J, Kuhn SA, Reichart R, Kalff R, Ewald C
PEEK cages as a potential alternative in the treatment of cervical spondylodiscitis: a preliminary report on a patient series
Eur Spine J. 2010, 19(6):1004-9.

Ewald C, Gartemann J, Kuhn SA, Walter J, Kalff R
Operative therapy for intraspinal Empyema: A Retrospektive Study of 23 patients
Z Orthop Unfall. 2009, 147:487-492

Ewald C, Gartemann J, Kuhn SA, Walter J, Kalff R
Operative therapy of bacterial spondylodiscitis: a retrospective study
Orthopade. 2009, 38(3):248-55

Ewald C, Hofmann T, Kuhn SA, Deufel T, Beetz C, Kalff R
Methylation-specific multiplex ligation-dependent probe amplification in meningiomas
J Neurooncol. 2008, 90(3):267-73.

Ewald C, Kuhn S, Kalff R
Pyogenic infections of the central nervous system secondary to dental affections--a report of six cases
Neurosurg Rev. 2006, 29(2):163-6

Ewald C, Hassler WE
Spontaneous herniation of the thoracic spinal cord as the etiology of progressive Brown-Sequard syndrome. A description of 3 cases
Nervenarzt. 2001, 72(6):441-4

Ewald CH, Kühne D, Hassler WE
Bypass-surgery and coil-embolisation in the treatment of cerebral giant aneurysms.
Acta Neurochir (Wien). 2000, 142(7):731-7


Hagel S, Ewald C, Doenst T, Sachse S, Roedel J, Pletz MW·
Ventriculitis due to infection with Rhizopus arrhizus
Med Mycol Case Rep. 2015, 10: 18-20

Grube S, Göttig T, Freitag D, Ewald C, Kalff R, Walter J.
Selection of suitable reference genes for expression analysis in human glioma using RT-qPCR.
J Neurooncol. 2015, 123(1):35-42

Waschke A, Berger-Roscher N, Kielstein H, Ewald C, Kalff R, Wilke HJ.
Cement Augmented Anterior Odontoid Screw Fixation is Biomechanically Advantageous in Osteoporotic Patients with Anderson Type II Fractures.
J Spinal Disord Tech. 2015, 28(3):E126-32

Stummer W, Rodrigues F, Schucht P, Preuss M, Wiewrodt D, Nestler U, Stein M, Artero JM, Platania N, Skjøth-Rasmussen J, Puppa AD, Caird J, Cortnum S, Eljamel S, Ewald C, González-García L, Martin AJ, Melada A, Peraud A, Brentrup A, Santarius T, Steiner HH; For the European ALA Pediatric Brain Tumor Study Group.
Predicting the "usefulness" of 5-ALA-derived tumor fluorescence for fluorescence-guided resections in pediatric brain tumors: a European survey.
Acta Neurochir (Wien). 2014,156(12):2315-24

Waschke A, Haciyakupoglu E, Gogcedak A, Walter J, Klinner M, Findeklee S, Dünisch P, Reichart R, Ewald C, Kalff R
Lumbar discectomy with epidural fat graftand its effect on clinical outcome and scar formation: A case control study on 104 patients.
J Turkisk Spin Surg. 2013, 24(4):269-74

Elia C, Schoenfeld C, Bayer O, Ewald C, Reinhart K, Sakr Y
The impact of age on outcome after major surgical procedures.
J Crit Care. 2013, 28(4):413-20

Sakr Y, Rother S, Ferreira AM, Ewald C, Dünisch P, Riedemmann N, Reinhart K
Fluctuations in Serum Sodium Level are Associated with an Increased Risk of Death in Surgical Intensive Care Unit Patients.
Crit Care Med. 2013, 41(1):133-42

Mueller CK, Bader RD, Ewald C, Kalff R, Schultze-Mosgau S
Scalp defect repair: A comparative analysis of different surgical techniques
Ann Plast Surg. 2012, 68(6):594-98

Haase D, Schmidl D, Ewald C, Kalff R, Huebner C, Firsching R, Keilhoff G, Evert M, Paulus W, Gutmann DH, Lal A, Mawrin C
Fatty acid synthase as a novel target for meningioma therapy
Neuro Oncol. 2010, 12(8):844-54

Kuhn SA, Mueller U, Hanisch UK, Regenbrecht CR, Schoenwald I, Brodhun M, Kosmehl H, Ewald C, Kalff R, Reichart R
Glioblastoma cells express functional cell membrane receptors activated by daily used medical drugs
J Cancer Res Clin Oncol. 2009, 43(2):183-90

Frank S, Kuhn SA, Brodhun M, Mueller U, Romeike B, Kosmehl H, Regenbrecht CR, Ewald C, Reichart R, Kalff R
Metastatic glioblastoma cells use common pathways via blood and lymphatic vessels
Neurol Neurochir Pol. 2009, 43(2):183-90

Beetz C, Bergner S, Brodoehl S, Brodhun M, Ewald C, Kalff R, Krüger J, Patt S, Kiehntopf M, Deufel T
Outcome-based profiling of astrocytic tumours identifies prognostic gene expression signatures which link molecular and morphology-based pathology
Int J Oncol. 2006, 29(5):1183-91



Ewald C, Walter J, Waschke A
Degenerative lumbale Stenose
Chirurgische Praxis 2016, 81(4): 659 - 666

Ewald C, Walter J, Waschke A
Degenerative lumbale Stenose
Tägliche Praxis 2016, 57: 719-726

Ewald C, Walter J, Waschke A
Degenerative lumbale Stenose
Internistische Praxis 2016, 56(3): 503-510

Ewald C, Kalff R
Symptomatic lumbar stenosis: Diagnostic evaluation and therapeutic strategies
Nervenarzt. 2011, 82(12):1623-31

Ewald C
Kyphoplastie-ist jetzt alles klar?
Management & Krankenhaus. 2012, 3:9

Ewald C
Operative Therapie bei degenerativer lumbaler Spinalkanalstenose
Ärztebl. Thüring. 2006, 17:569-72


Kalff R, Ewald C, Waschke A, Gobisch L, Hopf C
Degenerative lumbar spinal stenosis in older people: current treatment options
Dtsch Arztebl Int. 2013, 110(37):613-24



Ewald C, Waschke A
The degenerative spine in elderly people
Brain and Spine Surgery in the Elderly
Berhouma, Moncef / Krolak-Salmon, Pierre (Eds.)
1. Aufl. 2/2017

Kalff R, Ewald C
Claudicatio spinalis
Dag Moskopp / Hans Detlef Wassmann (Hrsg)
Handbuch für die Weiterbildung und interdisziplinäres Nachschlagewerk
2. Aufl. 12/ 2014