G Bergmann

Summary

Country: Germany

Publications

  1. ncbi Hip joint forces in sheep
    G Bergmann
    Oskar Helene Heim, Department of Orthopaedics, Free University of Berlin, Germany
    J Biomech 32:769-77. 1999
  2. ncbi Placing a bone graft more posteriorly may reduce the risk of pedicle screw breakage: analysis of an unexpected case of pedicle screw breakage
    A Rohlmann
    Biomechanics Laboratory, Oskar Helene Heim, Biomechanik Labor, Berlin, Germany
    J Biomech 31:763-7. 1998
  3. ncbi Estimation of muscle forces in the lumbar spine during upper-body inclination
    T Zander
    Orthopaedic Hospital of the Free University of Berlin, Oskar Helene Heim, Biomechanics Laboratory, Clayallee 229, D 14195, Berlin, Germany
    Clin Biomech (Bristol, Avon) 16:S73-80. 2001
  4. ncbi Frictional heating of total hip implants. Part 2: finite element study
    G Bergmann
    Biomechanics Laboratory, Benjamin Franklin School of Medicine, Free University of Berlin, Hindenburgdamm 30, 12200 Berlin, Germany
    J Biomech 34:429-35. 2001
  5. ncbi 2000 Volvo Award winner in biomechanical studies: Monitoring in vivo implant loads with a telemeterized internal spinal fixation device
    A Rohlmann
    Biomechanics Laboratory, Free University of Berlin, Oskar Helene Heim, Berlin, Germany
    Spine (Phila Pa 1976) 25:2981-6. 2000
  6. pmc Loads on internal spinal fixators measured in different body positions
    A Rohlmann
    Oskar Helene Heim, Biomechanics Laboratory, Clayallee 229, D 14195 Berlin, Germany
    Eur Spine J 8:354-9. 1999
  7. ncbi Hip contact forces and gait patterns from routine activities
    G Bergmann
    Biomechanics Laboratory, Benjamin Frunklin School of Medicine, Free University of Berlin, Hindenburgdamm 30, 12203, Berlin, Germany
    J Biomech 34:859-71. 2001
  8. ncbi Hip endoprosthesis for in vivo measurement of joint force and temperature
    F Graichen
    Biomechanics Laboratory, Oskar Helene Heim, Orthopaedic Hospital of the Free University of Berlin, Germany
    J Biomech 32:1113-7. 1999
  9. ncbi Internal spinal fixator stiffness has only a minor influence on stresses in the adjacent discs
    A Rohlmann
    Department of Biomechanics, Free University of Berlin, Germany
    Spine (Phila Pa 1976) 24:1192-5; discussion 1195-6. 1999
  10. ncbi Loads on an internal spinal fixation device during sitting
    A Rohlmann
    Orthopaedic Biomechanics Laboratory, Benjamin Franklin School of Medicine, Free University of Berlin, Hindenburgdamm 30, 12200, Berlin, Germany
    J Biomech 34:989-93. 2001

Detail Information

Publications16

  1. ncbi Hip joint forces in sheep
    G Bergmann
    Oskar Helene Heim, Department of Orthopaedics, Free University of Berlin, Germany
    J Biomech 32:769-77. 1999
    ..With regard to the force magnitudes and their directions, sheep seem to be a good model for testing human implant at the proximal femur...
  2. ncbi Placing a bone graft more posteriorly may reduce the risk of pedicle screw breakage: analysis of an unexpected case of pedicle screw breakage
    A Rohlmann
    Biomechanics Laboratory, Oskar Helene Heim, Biomechanik Labor, Berlin, Germany
    J Biomech 31:763-7. 1998
    ..Upper vertebral tilting in the sagittal plane must have caused the screw breakage. This would probably have been prevented by a more posteriorly placed bone graft...
  3. ncbi Estimation of muscle forces in the lumbar spine during upper-body inclination
    T Zander
    Orthopaedic Hospital of the Free University of Berlin, Oskar Helene Heim, Biomechanics Laboratory, Clayallee 229, D 14195, Berlin, Germany
    Clin Biomech (Bristol, Avon) 16:S73-80. 2001
    ..To estimate the muscle forces during upper-body inclination and to determine their influence on stress distribution in the annulus fibrosus of the lumbar spine discs...
  4. ncbi Frictional heating of total hip implants. Part 2: finite element study
    G Bergmann
    Biomechanics Laboratory, Benjamin Franklin School of Medicine, Free University of Berlin, Hindenburgdamm 30, 12200 Berlin, Germany
    J Biomech 34:429-35. 2001
    ..Under unfavourable conditions such a risk exists, however. General improvements of implant materials and clinical studies on the possibility of implant loosening due to high temperatures are therefore required...
  5. ncbi 2000 Volvo Award winner in biomechanical studies: Monitoring in vivo implant loads with a telemeterized internal spinal fixation device
    A Rohlmann
    Biomechanics Laboratory, Free University of Berlin, Oskar Helene Heim, Berlin, Germany
    Spine (Phila Pa 1976) 25:2981-6. 2000
    ..Implant loads were measured in 10 patients using telemeterized internal spinal fixation devices...
  6. pmc Loads on internal spinal fixators measured in different body positions
    A Rohlmann
    Oskar Helene Heim, Biomechanics Laboratory, Clayallee 229, D 14195 Berlin, Germany
    Eur Spine J 8:354-9. 1999
    ..Loads on the fixators were not higher for sitting than for standing. Patients who have undergone mono- or bisegmental spine stabilization should therefore be allowed to sit as soon as they can leave the bed...
  7. ncbi Hip contact forces and gait patterns from routine activities
    G Bergmann
    Biomechanics Laboratory, Benjamin Frunklin School of Medicine, Free University of Berlin, Hindenburgdamm 30, 12203, Berlin, Germany
    J Biomech 34:859-71. 2001
    ..Because the hip joint loading during all other common activities of most hip patients are comparably small (except during stumbling), implants should mainly be tested with loading conditions that mimic walking and stair climbing...
  8. ncbi Hip endoprosthesis for in vivo measurement of joint force and temperature
    F Graichen
    Biomechanics Laboratory, Oskar Helene Heim, Orthopaedic Hospital of the Free University of Berlin, Germany
    J Biomech 32:1113-7. 1999
    ..This paper describes the design and accuracy of the instrumented implant and the principal function of the external system components...
  9. ncbi Internal spinal fixator stiffness has only a minor influence on stresses in the adjacent discs
    A Rohlmann
    Department of Biomechanics, Free University of Berlin, Germany
    Spine (Phila Pa 1976) 24:1192-5; discussion 1195-6. 1999
    ..Stresses in vertebral endplates and discs were calculated using the three-dimensional nonlinear finite-element model of a lumbar spine with an internal spinal fixation device...
  10. ncbi Loads on an internal spinal fixation device during sitting
    A Rohlmann
    Orthopaedic Biomechanics Laboratory, Benjamin Franklin School of Medicine, Free University of Berlin, Hindenburgdamm 30, 12200, Berlin, Germany
    J Biomech 34:989-93. 2001
    ..Implant loads decreased with increasing inclination of the upper body while sitting on a chair with an adjustable backrest. Implant loads were about 27% higher for standing up and sitting down than for sitting...
  11. pmc Effect of an internal fixator and a bone graft on intersegmental spinal motion and intradiscal pressure in the adjacent regions
    A Rohlmann
    Biomechanics Laboratory, Benjamin Franklin School of Medicine, Free University of Berlin, Germany
    Eur Spine J 10:301-8. 2001
    ..Our results suggest that disc degeneration, which is sometimes found at the level directly above and below the fixators, is not caused by mechanical factors...
  12. ncbi Influence of load carrying on loads in internal spinal fixators
    A Rohlmann
    Biomechanics Laboratory, Oskar Helene Heim, Orthopaedic Hospital of the Free University of Berlin, Germany
    J Biomech 33:1099-104. 2000
    ..Carrying a shopping bag only slightly increases the risk of pedicle screw breakage, however, since the spine has to support most of the additional weight, it represents a risk with regard to correction loss and bone sintering...
  13. ncbi Influence of muscle forces on loads in internal spinal fixation devices
    A Rohlmann
    Department of Biomechanics, Free University of Berlin, Germany
    Spine (Phila Pa 1976) 23:537-42. 1998
    ..They prevent an axial tensile load on the spine when part of the body weight is pulling, e.g., when the patient is hanging by his hands or feet. The implant loads may be strongly altered when the patient is under anesthesia...
  14. ncbi In vivo glenohumeral contact forces--measurements in the first patient 7 months postoperatively
    G Bergmann
    Department of Orthopaedics, Charite Universitatsmedizin Berlin, Biomechanics Laboratory, Campus Benjamin Franklin, Hindenburgdamm 30, D 12203 Berlin, Germany
    J Biomech 40:2139-49. 2007
    ..3mm. These first worldwide in vivo measurements of glenohumeral contact forces are being continued in more patients and for longer postoperative times...
  15. pmc Influence of graded facetectomy and laminectomy on spinal biomechanics
    T Zander
    Biomechanics Laboratory, University Hospital Benjamin Franklin, Free University of Berlin, Hindenburgdamm 30, 12203, Berlin, Germany
    Eur Spine J 12:427-34. 2003
    ..For axial rotation, spinal stability is decreased even after a hemifacetectomy. Patients should therefore avoid excessive axial rotation after such a treatment...
  16. ncbi Frictional heating of total hip implants. Part 1: measurements in patients
    G Bergmann
    Biomechanics Laboratory, Department of Orthopaedics, Free University of Berlin, Clayallee 229, 14195, Berlin, Germany
    J Biomech 34:421-8. 2001
    ..Because the potential risk for an individual patient cannot be foreseen, the use and improvement of low friction implant materials is important...