A5052516095- Orthopaedic implants and arthroplasty
- Spine and Intervertebral Disc Pathology
- Total Knee Arthroplasty Outcomes
- Spinal Fractures and Fixation Techniques
- Orthopedic Infections and Treatments
- Musculoskeletal pain and rehabilitation
- Scoliosis diagnosis and treatment
- Hip disorders and treatments
- Shoulder Injury and Treatment
- Knee injuries and reconstruction techniques
- Medical Imaging and Analysis
- Shoulder and Clavicle Injuries
- Lower Extremity Biomechanics and Pathologies
- Pelvic and Acetabular Injuries
- Bone fractures and treatments
- Nerve Injury and Rehabilitation
- Hip and Femur Fractures
- Muscle activation and electromyography studies
- Cardiac pacing and defibrillation studies
- Musculoskeletal Disorders and Rehabilitation
- Orthopedic Surgery and Rehabilitation
- Structural Engineering and Vibration Analysis
- Mechanics and Biomechanics Studies
- Powder Metallurgy Techniques and Materials
- Effects of Vibration on Health
Berlin Institute of Health at Charité - Universitätsmedizin Berlin
2014-2023
Freie Universität Berlin
1997-2019
Humboldt-Universität zu Berlin
2010-2019
Charité - Universitätsmedizin Berlin
2007-2017
Endocyte (United States)
2012
Federal Institute for Occupational Safety and Health
2010
Dr. August Wolff (Germany)
2010
Stiftung Oskar Helene Heim
1989-2008
Franklin University
2007
Orthopädische Universitätsklinik
1909-2001
With the increasing success of hip joint replacements, average age patients has decreased, have become more active and their expectations implant durability risen. Thus, pre-clinical endurance tests on implants require defining realistic in vivo loads from younger patients. These simplifications to be applicable for simulator numerical analyses. Here, contact forces were measured with instrumented ten subjects during nine most physically demanding frequent activities daily living. Typical...
The loads acting in knee joints must be known for improving joint replacement, surgical procedures, physiotherapy, biomechanical computer simulations, and to advise patients with osteoarthritis or fractures about what activities avoid. Such data would also allow verification of test standards implants. This work analyzes from 8 subjects instrumented implants, which allowed measuring the contact forces moments joint. implants were powered inductively transmitted at radio frequency. time...
The aim here was to define realistic load conditions for hip implants, based on in vivo contact force measurements, and see whether current ISO standards indeed simulate real loads. scenarios obtained are forces measured 4 patients during different activities activity records from 31 patients. can be adapted various test purposes by applying average or high peak loads, high-impact additional low-impact activities, simulating normal very active most strenuous walking (average 1800 N, 3900 N),...
The external knee adduction moment is considered a surrogate measure for the medial tibiofemoral contact force and commonly used to quantify load reducing effect of orthopedic interventions. However, only limited controversial data exist about correlation between force. objective this study was examine whether indeed strong predictor by determining their during gait. Instrumented implants with telemetric transmission were forces in nine subjects. Gait analyses performed simultaneously joint...
Surgical intervention of the knee joint routinely endeavors to recreate a physiologically normal loading environment. The conditions resulting from osteotomies, fracture treatment, ligament replacements, and arthroplasties are considered have an impact on long term clinical outcome; however, knowledge regarding in vivo is limited. Using previously validated musculoskeletal lower limb model, we predicted tibio-femoral contact forces that occur human during common daily activities walking...
Intradiscal pressure and intersegmental rotation of human lumbar spines were measured in vitro.To determine the effect a follower load on mechanical behavior at all levels spine.Different loads have been proposed for studying spine. The influence intradiscal different is unknown.Ten cadaveric loaded three main anatomic planes with pure moments 3.75, 7.5, 7.5 Nm plus 280 N. levels.An additional increased pressure, slightly reduced axial rotation, hardly affected lateral bending...
Knowledge of the loads to which orthopedic implants are subjected is a fundamental prerequisite for their optimal biomechanical design, long-term success, and improved rehabilitation outcomes. In vivo load measurements more accurate than those obtained using mathematical musculoskeletal models. An inductively powered integrated circuit inside implant measures six components as well temperature supplied voltage. This low-power includes 9-channel multiplexer, programmable memory, pulse...
Background: Malalignment after total knee replacement could cause overloading of the implant bearing as well bone itself, leading to osteolysis and early loosening. To quantify stresses has withstand define a safe zone limb alignment, contact forces their mediolateral distribution have be determined. Analytical gait data mathematical models been used for this purpose. We performed study determine in vivo loads five patients implantation an instrumented tibial baseplate. Methods: Five with...