Experimental and numerical characterization of the active behaviour of mouse rotator cuff muscles

Researcher: 
Lopes de Sousa Martins, Pedro Alexandre
Congress: 
ESB2022 - 27th Congress of the European Society of Biomechanics
Participation type: 
Póster
Other authors: 
P. Pérez, G. Abanza, B. Calvo, and J. Grasa
Year: 
2022
Location: 
Porto, Portugal
Publication: 
P. Martins, P. Pérez, G. Abanza, B. Calvo, and J. Grasa. Experimental and numerical characterization of the active behaviour of mouse rotator cuff muscles. In ESB2022 - 27th Congress of the European Society of Biomechanics, Abstract Book, page 653, Porto, Portugal, 26-29 June 2022

Tendon injuries are frequent among musculoskeletal lesions, affecting almost all tendons within the human body. In chronic lesions, in addition to repair tendon discontinuity, it is essential to avoid muscle degeneration, a consequence of tendon retraction and shortening, leading to muscle atrophy. Muscle fatty infiltration after tendon rupture is responsible for muscle atrophy, and consequently, muscle function loss. This scenario remains a challenge for orthopaedic surgeons, as there is no optimal solution capable of restoring the initial traction capacity once that muscle degeneration is present. This problem is common in rotator cuff injuries . The rotator cuff is the group of muscles and tendons that act to stabilize the shoulder and allow for its extensive range of motion. This work establishes a new framework based on an animal model and computational simulation to understand the biomechanics of the joint and to test new treatments. To achieve this goal, the active behaviour of the Infraspinatus and Supraspinatus muscles of a mice model has been analyzed as a first step.