Student Projects

Numerical quantification of rehabilitation programs regarding patellar tracking disorder after implantation of a total knee arthroplasty

Michael Kögler

Preventing the development of the Upper- Crossed Syndrome with targeted exercises to strengthen weakened muscles

Evelyn Husser

About 20 percent of patients after total knee arthroplasty (TKA) suffer from persistent anterior knee pain, which can be related to a patella tracking disorder. Physical therapy is often the first choice of treatment options. This study analyzes the best and worst muscle recruitment aiming to find the optimum treatment routine following TKA to reduce mediolateral forces. A parameter study is conducted to determine the optimum muscle configuration. In addition, the influence of varying varus-valgus positions after implantations is analyzed in two different muscle models, the above mentioned and a full Hill model. The main aspect of the study – the variation of muscle strength – is practiced in the simplest conceivable muscle model in Anybody, not influenced by the contraction velocity and current muscle length. Optimum configurations differ between pre- and postsurgery simulations.

The Upper-Crossed Syndrome is a chronic, inflammatory and degenerative disease of the musculoskeletal system. An unnatural and / or permanently static posture and repetitive movement patterns lead to incorrect loading on the body. As a result, the locomotor apparatus reacts by adapting the muscles. An imbalance between weakened and tense muscle groups becomes persistent. This imbalance can lead to the development of musculoskeletal conditions. However, this muscular mismatch can be improved by specifically strengthening the weakened muscles. The aim of this sports study is to identify exercises that specifically strengthen muscles that are weakened in the Upper-Crossed syndrome. Therefore, possibly preventing the development of an imbalance and subsequently, the development of such condition.