Publications by authors named "D J Kiefer"
Detecting surface contamination on thin thermoformed polymer plates is a critical issue for various industrial applications. Lamb waves offer a promising solution, though their effectiveness is challenged by the strong attenuation and anisotropy of the polymer plates. This issue is addressed in the context of a calcium carbonate (CaCO) layer deposited on a polypropylene (PP) plate.
View Article and Find Full Text PDFBackground: Patients with Rheumatic and Musculoskeletal Diseases, including axial spondyloarthritis (axSpA), may suffer from stressors like pain and functional impairments leading to limitations in their self-perceived health status. The COping with Rheumatic Stressors (CORS) questionnaire was developed to analyze how patients cope with these stressors. The CORS is currently not available in German.
View Article and Find Full Text PDFObjective: In axSpA, validated PROs are well-established in clinical trials, but it remains unclear whether they comprehensively reflect patients' discomfort and disease status. We aimed to investigate how patients' self-reported disease status does compare to validated clinical trial measures during routine clinical visits.
Methods: Data from axSpA patients' initial and last five visits were retrospectively analyzed.
Article Synopsis
- Postoperative muscle weakness, particularly in quadriceps, affects gait biomechanics in patients after ACL reconstruction, but it's uncertain if this weakness hinders their ability to adjust their gait using real-time biofeedback.
- This study involved 35 individuals who had undergone unilateral ACL reconstruction and aimed to assess the relationship between quadriceps strength and their ability to modify vertical ground reaction force (vGRF) through a biofeedback intervention during walking trials.
- Results indicated no significant connection between quadriceps strength and the participants' ability to adjust their gait as measured by changes in peak vGRF, suggesting that achieving full quadriceps strength may not be essential to benefit from gait biofeedback after ACL reconstruction.
Objectives: In axial spondyloarthritis (axSpA), early diagnosis is crucial, but diagnostic delay remains long and diagnostic criteria do not exist. We aimed to identify a diagnostic model that distinguishes patients with axSpA from patients without axSpA with chronic back pain based on clinical data in routine care.
Methods: Clinical data from patients with chronic back pain were used, with information on rheumatological examinations based on clinical indications.