Univ.- Prof. Dr.-Ing. Georg Bergmann

Vice Director and Principal Investigator

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Instrumented Implants

From the beginning on Prof. Georg Bergmann has concentrated his activities on the field of orthopaedic biomechanics, according to his belief that really important research results can only be achieved by such a specialization. Since 1980 he worked on the idea to measure the loading of joint implants by using integrated sensors, an inductive power supply and telemetric data transmission. With regard to the state of technology existing at that time, this was a big technological challenge und had never before been achieved in a larger number of patients and over a longer period of time. After several years of development the first instrumented hip endoprosthesis was implanted in a patient in 1988. Since then the technology has steadily been improved.

Currently loading studies are performed on hip joints, knee joints, shoulder joints, and at spine implants. They fundamentally contribute to further improving joint replacement, advancing fracture treatment, giving advice to patients with arthrosis, fractures and after joint replacement of how to avoid extreme loads, improving physiotherapy, validating computer simulations of internal loads by comparisons with real measurements, and deepening the general understanding of biomechanics of the human body. 2013 the OrthoLoad Club has been founded. Its goal is to contribute to the improvement of joint implants by scientific exchange with the industry.

The research work has financially mainly been supported by the German Research Society, the Deutsche Arthrose-Hilfe e.V., and the companies Zimmer and DepuySynthes. A number of other companies also contributed financially to various projects.

The main goal of Georg Bergmann is to make three decades of hardly repeatable research work applicable for the public and other research groups by facilitating access to a huge number of load measurements from the internet data base OrthoLoad.com. This data collection is steadily expanded.

 

The most important publications:

Bergmann G, Bender A, Graichen F, Dymke J, Rohlmann A, Trepczynski A, Heller MO, Kutzner I
Standardized loads acting in knee implants.
PLoS One. 2014 Jan 23;9(1):e86035

Kutzner I, Stephan D, Dymke J, Bender A, Graichen F, Bergmann G
The influence of footwear on knee joint loading during walking - in vivo load measurements with instrumented knee implants.
J Biomech. 2013 Feb 22;46(4):796-800

Halder A, Kutzner I, Graichen F, Heinlein B, Beier A, Bergmann G
Influence of limb alignment on mediolateral loading in total knee replacement: in vivo measurements in five patients.
J Bone Joint Surg Am. 2012 Jun 6;94(11):1023-9

Bergmann G, Graichen F, Bender A, Rohlmann A, Halder A, Beier A, Westerhoff P
In vivo gleno-humeral joint loads during forward flexion and abduction.
J Biomech. 2011 May 17;44(8):1543-52

Bergmann G, Graichen F, Rohlmann A, Bender A, Heinlein B, Duda GN, Heller MO, Morlock MM
Realistic loads for testing hip implants.
Biomed Mater Eng. 2010;20(2):65-75

Westerhoff P, Graichen F, Bender A, Halder A, Beier A, Rohlmann A, Bergmann G
In vivo measurement of shoulder joint loads during activities of daily living.
J Biomech. 2009 Aug 25;42(12):1840-9

Bergmann G, Graichen F, Rohlmann A, Verdonschot N, van Lenthe GH
Frictional heating of total hip implants. Part 1: measurements in patients.
J Biomech. 2001 Apr;34(4):421-8

Bergmann G, Deuretzbacher G, Heller M, Graichen F, Rohlmann A, Strauss J, Duda GN
Hip contact forces and gait patterns from routine activities.
J Biomech. 2001 Jul;34(7):859-71

Bergmann G
Hip98, loading of the hip joint
Freie Universität  Berlin, ISBN 3980784800, 2001

Bergmann G, Graichen F, Rohlmann A
Hip joint loading during walking and running, measured in two patients.
J Biomech. 1993 Aug;26(8):969-9

Vita Univ.- Prof. Dr.-Ing. Georg Bergmann

Georg Bergmann was born 1947 in Berlin. He studied mechanical and medical engineering at the Technical University in Berlin. 1974 he started his research activities at the Oskar-Helene-Heim, the Orthopaedic Clinic of the Free University of Berlin. After obtaining a Dr.-Ing. degree in 1981 he worked at the Harvard Medical School in 1982/83. 1995 he obtained the German postdoctoral qualification and is Professor at the Charité since 2003. Together with Georg Duda he founded the Julius Wolff Institute in 2007, where the research activities of both groups are joined in an ideal way.

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