Webcast on the influence of mental demand on leg loading for football players.

Simon Auer will give a webcast about parts of this PhD work. The webcasts will be given in cooperation with AnyBody Technology on the 29th of September. Details can be found here.

Football players have a high risk of leg muscle injuries, especially when exposed to mental stress. Injuries to muscles of the thigh are common in amateur and professional football, representing almost a third of all injuries. These injuries occur primarily in non-contact situations and from overuse. They can lead to a range of costs, including financial costs associated with treatment as well as those associated with long-term recovery, and absence from training and/or competition. Further, there is a high risk of injury recurrence and subsequent injury.
Musculoskeletal models are an established method for analyzing internal body loads in ergonomic or rehabilitation. In the recent past, these models have also been used for more dynamic movements such as those found in soccer. Hence, we investigate the effects of mental stress in highly dynamic motion. This will provide new information on internal loading of the lower extremities and help to prevent injuries.

Article in Hip International

Enrico de Pieri from ETH Zürich has successfully published his research on hip contact force pathes in total hip replacement in HIP International. Congratulations for the great work! The work is a collaboration between ETH Zuerich, Schulthess Clinics Zurich and our lab. Some of the computations are based on previous work by Tim Weber.

The titel of the work: Contact force path in total hip arthroplasty: effect of cup medialisation in a whole body simulation.  

 

 

 

 

Article accepted in Journal of Biomechanics

Maximilian Aurbach got parts of his work on shoulder modeling accepted for publication in Journal of Biomechanics. 
The titel of the paper is: Evaluation of musculoskeletal modelling parameters of the shoulder complex during humeral abduction above 90°

The work shows how different modelling parameters influence the biomechanical outcome of shoulder modeling. It also might help other researcher looking at different parts of the body. 

The work is a result of our EFRE Ziel ETZ BY-CY project with our partners from University of West Bohemia in Plzen, CZ.

Dr. Simon Gross

Last thursday Simon Gross successfully defended his doctoral thesis on the influence of fatigue on musculoskeletal loading. In his work he investigated fatigue of single muscles as well as muscle groups and implemented an novel fatigue algorithm which can be used for musculoskeletal analyses. 

Thanks for all the hard work and congratulations!

Presentations at ESB meeting 2019

We had a number of contributions to the 2019 European Society of Biomechanics Meeting in Vienna:

Simon Auer presented his preliminary study on the influence of mental stress on muscle forces in football players and could show that stress in fact increases forces and might therefore play an important role in the develpment of injuries. 

Maximilian Aurbach showed his study on how different modelling parameters influence shoulder joint reaction forces. He proposed that the use of Hill-type muscle models might play the most important role in proper force prediction of inverse dynamic models.

Franz Süß work was present by Sebastian Dendorfer. Again a stress topic, this study could show how cognitive stress increases spinal forces even under very controlled motion.

Simone Kubowitsch studied the influence of cognitive stress on biomechanical symmetry in spinal muscles and could show significant differences in muscle recruitement under stress.

Maximilian Melzners development and validation of a novel musculoskelettal hand model was presented by our partners on University Ulm. The new model has quite some potential to adress biomechanical questions on the hand. 

All studies were recieved quite well and it will be exciting to see these projects go on!

Contact us for details.

Thanks to the organizers for the great conference. 

Paper accepted in Scientfic Reports

In cooperation with our partners at the Department of Orthopaedic Surgery, Regensburg University Medical Centre we got a paper accepted in Scientific Reports. The main author is Florian Völlner, he reports about in vívo measurement for ligament stiffness which is an important parameter in knee endoprosthesis surgeries.

The full reference:

Völlner, Florian; Weber, Tim; Weber, Markus; Renkawitz, Tobias; Dendorfer, Sebastian; Grifka, Joachim; Craiovan, Benjamin (2019): A simple method for determining ligament stiffness during total knee arthroplasty in vivo. In: Scientific Reports 9 (1), S. 5261. DOI: 10.1038/s41598-019-41732-x.