A5002798089- Spine and Intervertebral Disc Pathology
- Spinal Fractures and Fixation Techniques
- Pelvic and Acetabular Injuries
- Hip disorders and treatments
- Cardiac Structural Anomalies and Repair
- Aluminum Alloys Composites Properties
- Orthopaedic implants and arthroplasty
- Magnesium Alloys: Properties and Applications
- Shape Memory Alloy Transformations
- Hip and Femur Fractures
- Medical Imaging and Analysis
- Bone fractures and treatments
- Elasticity and Material Modeling
- Orthopedic Surgery and Rehabilitation
- Musculoskeletal Disorders and Rehabilitation
- Musculoskeletal pain and rehabilitation
- Metal Alloys Wear and Properties
- Mechanical Engineering and Vibrations Research
- Cervical and Thoracic Myelopathy
University Hospital Leipzig
2020-2025
Leipzig University
2021-2022
Leibniz University Hannover
2012-2014
Abstract Background Degenerative changes in the cervical spine can include gradual loss of functionality intervertebral disks, development osteophytes and ligament hypertrophy. Removal disk replacement with a cage (anterior discectomy fusion [ACDF]) is standardized operative procedure these patients. The implant should provide structural support, restore physiologic lordosis, enable solid fusion. In this context, shape memory materials have great potential implants spinal surgery. Methods We...
Threads of modern pedicle screws can vary greatly in design. It is difficult to assess which interplay design features particularly advantageous for screw anchorage. This study aims increase the understanding anchorage behaviour between and cancellous bone. Pull-out tests six two sizes each were performed on three densities biomechanical test material. More general characteristics derived from evaluated using data. Selected tested body donor Some characteristics, such as compacting, are well...
The goal of this study is to compare the construct stability long segmental dorsal stabilization in unstable midthoracic osteoporotic fractures with complete pedicle screw cement augmentation (ComPSCA) versus restricted (ResPSCA) most cranial and caudal screws under cyclic loading. Twelve fresh frozen human cadaveric specimens (Th4-Th10) from individuals aged 65 years older were tested a biomechanical cadaver study. All received DEXA scan computer tomography (CT) prior testing. matched into...
Damage of the heart muscle's tissue is irreversible due to inability adult cardiomyocytes proliferate.Biological grafts like vascularized bowel segments are a novel approach overcome these limitations.We found cardiac muscle cells within heterotopically used gastric in previous studies [1].This may indicate an vivo remodeling process.Unfortunately, early after transplantation biological does not exhibit sufficient mechanical strength withstand high systolic pressures left ventricle (up 240...
Intraoperative proximal femoral fractures (IPFF) represent a rare but challenging complication of total hip arthroplasties. They usually occur as longitudinal split. This pilot trial aimed to compare the biomechanical primary stability different fixation techniques for IPFF. Standardised medial split femur (type II, Modified Mallory Classification) were created in artificial osteoporotic and non-osteoporotic composite femora after implantation cementless stem. Five compared: cerclage band,...
Abstract The lumbo-pelvic complex is a highly structural system. current investigation aims to identify the kinematics between interacting bone segments under different loading conditions. A specimen of was obtained from human body donor and tested in self-developed test rig. experimental setup designed imitate extension, flexion, right left lateral bending axial rotation right, respectively. vertebra L3 firmly embedded load introduced via hip joints. Using digital image correlation (DIC)...
In general, sufficient anchoring of screws in the bone material ensures intended primary stability.Shape memory materials offers option using temperature-associated deformation energy a targeted manner order to do justice special situation osteoporotic bones or potential lack anchoring. An expansion screw was developed that takes this possibility and these requirements into account. Using finite element analysis, variability configuration actuator assessed from shape memory. particular,...
Fragestellung Die Behandlung von periprothetischen Frakturen (PPF) stellt die Operateure der Orthopädie und Unfallchirurgie stets vor große Herausforderungen. Neben Lockerung Endoprothesen ist eingeschränkte Knochenqualität (Osteopenie bzw. Osteoporose) des häufig multimorbiden Patientengutes wesentlicher Faktor für das Auftreten PPF. Intraoperativ treten PPF am proximalen Femur bei Implantation zementloser HTEP-Schäfte auf (3-17 %). Als Therapien Wahl haben sich unter anderem Anlage...