Klaus-Dieter Schaser

Prof. Dr. Klaus-Dieter Schaser

1. University Center for Orthopaedics, Trauma & Plastic Surgery, Dresden, Germany
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Research Focus & Metrics

Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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30 November 2020 in Cancers
Verified
Journal Article
Open access
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MEMartin Eichler
Martin Eichler
LHLeopold Hentschel
Leopold Hentschel
SRStephan Richter
Stephan Richter
Peter HohenbergerPeter Hohenberger
Peter Hohenberger
Bernd KasperBernd Kasper
Bernd Kasper
TGthe PROSa Study Group
the PROSa Study Group
Sarcomas are rare cancers with high heterogeneity in terms of type, location, and treatment. The health-related quality of life (HRQoL) of sarcoma patients has rarely been investigated and is the subject of this analysis. Adult sarcoma patients and survivors were assessed between September 2017 and February 2019 in 39 study centers in Germany using standardized, validated questionnaires (European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30)). Associated factors were analyzed exploratively using multivariable linear regressions. Among 1113 patients, clinically important limitations and symptoms were most pronounced in emotional (63%, 95% CI 60–66%), physical (60%, 95% CI 57–62%), role functioning (51%, 95% CI 48–54%), and pain (56%, 95% CI 53–59%) and fatigue (51%, 95% CI 48–54%). HRQoL differed between tumor locations with lower extremities performing the worst and sarcoma types with bone sarcoma types being most affected. Additionally, female gender, higher age, lower socioeconomic status, recurrent disease, not being in retirement, comorbidities, and being in treatment were associated with lower HRQoL. Sarcoma patients are severely restricted in their HRQoL, especially in functioning scales. The heterogeneity of sarcomas with regard to type and location is reflected in HRQoL outcomes. During treatment and follow-up, close attention has to be paid to the reintegration of the patients into daily life as well as to their physical abilities and emotional distress.

7 December 2021 in Cancers
Verified
Journal Article
Open access
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Björn LampeBjörn Lampe
Björn Lampe
VLVerónica Luengas-Würzinger
Verónica Luengas-Würzinger
JWJürgen Weitz
Jürgen Weitz
SRStephan Roth
Stephan Roth
FRFriederike Luise Rawert
Friederike Luise Rawert
ABAndreas Bogner
Andreas Bogner
Purpose: The practice of exenterative surgery is sometimes controversial and has garnered a certain scepticism. Surgical studies are difficult to conduct due to insufficient data. The aim of this review is to present the current standing of pelvic exenteration from a surgical, gynaecological and urological point of view. Methods: This review is based upon a literature review (MEDLINE (PubMed), CENTRAL (Cochrane) and EMBASE (Elsevier)) of retrospective studies on exenterative surgery from 1993–2020. Using MeSH (Medical Subject Headings) search terms, 1572 publications were found. These were evaluated and screened with respect to their eligibility using algorithms and well-defined inclusion and exclusion criteria. Therefore, the guidelines for systematic reviews (PRISMA) were used. Results: A complete tumour resection (R0) often represents the only curative option for advanced pelvic carcinomas and their recurrences. A recent systematic review showed significant symptom relief in 80% of palliative patients after pelvic exenteration. Surgical limitations (distant metastases, involvement of the pelvic wall, etc.) are diminished by adequate surgical expertise and close interdisciplinary cooperation. While the mortality rate is low (2–5%), the still relatively high morbidity rate (32–84%) can be minimized by optimizing the perioperative setting. Following exenterations, roughly 79–82% of patients report satisfying results according to PROs (patient-reported outcomes). Conclusion: Due to multimodality treatment strategies combined with extended surgical expertise and patients’ preferences, pelvic exenteration can be offered nowadays with low mortality and acceptable postoperative quality of life. The possibilities of surgical treatment are often underestimated. A multi-centre database (PelvEx Collaborative) was established to collect data and experiences to optimize the research in this field.

27 January 2015 in International Orthopaedics
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Journal Article
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Sven MaerdianSven Maerdian
Sven Maerdian
Klaus-Dieter SchaserKlaus-Dieter Schaser
Klaus-Dieter Schaser
JGJohanna Gruner
Johanna Gruner
FSFranziska Scheel
Franziska Scheel
CPCarsten Perka
Carsten Perka
PSPhilipp Schwabe
Philipp Schwabe

13 September 2016 in BMC Neurology
Verified
Journal Article
Open access
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ILInês Laginha
Inês Laginha
MKMarcel A. Kopp
Marcel A. Kopp
CDClaudia Druschel
Claudia Druschel
Klaus-Dieter SchaserKlaus-Dieter Schaser
Klaus-Dieter Schaser
BBBenedikt Brommer
Benedikt Brommer
JSJan M. Schwab
Jan M. Schwab
Natural killer (NK) cells comprise the main components of lymphocyte-mediated nonspecific immunity. Through their effector function they play a crucial role combating bacterial and viral challenges. They are also thought to be key contributors to the systemic spinal cord injury-induced immune-deficiency syndrome (SCI-IDS). SCI-IDS increases susceptibility to infection and extends to the post-acute and chronic phases after SCI. The prospective study of NK cell function after traumatic SCI was carried out in two centers in Berlin, Germany. SCI patients and control patients with neurologically silent vertebral fracture also undergoing surgical stabilization were enrolled. Furthermore healthy controls were included to provide reference data. The NK cell function was assessed at 7 (5–9) days, 14 days (11–28) days, and 10 (8–12) weeks post-trauma. Clinical documentation included the American Spinal Injury Association (ASIA) impairment scale (AIS), neurological level of injury, infection status, concomitant injury, and medications. The primary endpoint of the study is CD107a expression by NK cells (cytotoxicity marker) 8–12 weeks following SCI. Secondary endpoints are the NK cell’s TNF-α and IFN-γ production by the NK cells 8–12 weeks following SCI. The protocol of this study was developed to investigate the hypotheses whether i) SCI impairs NK cell function throughout the post-acute and sub-acute phases after SCI and ii) the degree of impairment relates to lesion height and severity. A deeper understanding of the SCI-IDS is crucial to enable strategies for prevention of infections, which are associated with poor neurological outcome and elevated mortality. DRKS00009855 .

27 April 2017 in Der Orthopäde
Verified
Journal Article
Closed access
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HFH. Fritzsche
H. Fritzsche
Klaus-Dieter SchaserKlaus-Dieter Schaser
Klaus-Dieter Schaser
CHC. Hofbauer
C. Hofbauer

9 February 2017 in Journal of Hand Surgery (European Volume)
Verified
Journal Article
Closed access
TTTeun Teunis
Teun Teunis
JJJ. Jupiter
J. Jupiter
Klaus-Dieter SchaserKlaus-Dieter Schaser
Klaus-Dieter Schaser
GFG. Fronhöfer
G. Fronhöfer
RBReto Hans Jörg Babst
Reto Hans Jörg Babst
DRD. Rikli
D. Rikli
Treatment with a variable angle locking plate can, in theory, maintain near anatomic reduction of intra-articular distal radius fractures, but it is unknown to what extent reduction is maintained as measured by computed tomography. We assessed changes in radiographic fracture position 1 year post-operatively. We included 73 patients of whom 66 patients (90%) had radiographs available for review at 1 year post-operatively. We found a small (less than 2 mm or 2°) but statistically significant change in several measures. Accounting for inter-observer variability, this is probably within measurement error. We found no difference in change in fracture position or range of motion, grip strength or patient-reported outcome between the use of one or two distal rows of screws. Our results show that minimal changes in reduction can be expected after volar plate fixation in most patients. We recommend using only one screw row routinely, limiting costs, surgical time and the risk of misplacement of screws. Level of evidence: IV