Publication

Muscle lengths and moment arms during activities of daily living

2011
Student Projects

Abstract

Muscle lengths and moment arms are important parameters of musculoskeletal models. These data determine muscle forces and moments and thus joint contact forces, an important value in musculoskeletal biomechanics. In the literature, there are many data available for simple movements (e.g. abduction in the scapular plane), but not yet for activities of daily living. The goal of this semester project is to simulate activities of daily living in a numerical musculoskeletal model and calculate the resulting muscle lengths and moment arms. The model which will be used in this project contains 28 muscle parts which cross 4 joints (glenohumeral, acromioclavicular, sternoclavicular joint and scapulothoracic gliding plane). For the simulation, the commercial FE software Abaqus will be used.

Official source

https://infoscience.epfl.ch/entities/publication/bf43a37c-eb1a-4e29-a8c8-b2d73e3e6c13

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2011
Student Projects

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/bf43a37c-eb1a-4e29-a8c8-b2d73e3e6c13

About this result

Related concepts (32)

Muscle contraction

Muscle contraction is the activation of tension-generating sites within muscle cells. In physiology, muscle contraction does not necessarily mean muscle shortening because muscle tension can be produced without changes in muscle length, such as when holding something heavy in the same position. The termination of muscle contraction is followed by muscle relaxation, which is a return of the muscle fibers to their low tension-generating state.

Smooth muscle

Smooth muscle is an involuntary non-striated muscle, so-called because it has no sarcomeres and therefore no striations (bands or stripes). It is divided into two subgroups, single-unit and multiunit smooth muscle. Within single-unit muscle, the whole bundle or sheet of smooth muscle cells contracts as a syncytium. Smooth muscle is found in the walls of hollow organs, including the stomach, intestines, bladder and uterus. In the walls of blood vessels, and lymph vessels, (excluding blood and lymph capillaries) it is known as vascular smooth muscle.

Muscle cell

A muscle cell is also known as a myocyte when referring to either a cardiac muscle cell (cardiomyocyte) or a smooth muscle cell, as these are both small cells. A skeletal muscle cell is long and threadlike with many nuclei and is called a muscle fiber. Muscle cells (including myocytes and muscle fibers) develop from embryonic precursor cells called myoblasts. Myoblasts fuse from multinucleated skeletal muscle cells known as syncytia in a process known as myogenesis.

Related publications (32)

Muscle lengths and moment arms during activities of daily living

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