Related Experiment Video
Updated: Sep 10, 2025
07:56
Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts
Published on: January 29, 2018
17.7K
Approach to Standardized Material Characterization of the Human Lumbopelvic System: Testing and Evaluation
Marc Gebhardt1,2, Sascha Kurz3, Fanny Grundmann4
1Institute of Experimental Mechanics, Faculty of Civil Engineering, Leipzig University of Applied Sciences, 04277 Leipzig, Germany.
Bioengineering (Basel, Switzerland)
|August 28, 2025
Summary
This study establishes standardized methods to measure the mechanical properties of the lumbopelvic complex. The findings provide crucial location-specific material data for bone and soft tissues, enhancing research comparability.
Area of Science:
- Biomechanics
- Orthopedic Research
- Materials Science
Background:
- The osseo-ligamentous lumbopelvic complex is vital for load transfer.
- Scarcity of location-specific material data and standardized testing protocols hinders comparability.
Purpose of the Study:
- To develop and validate standardized methods for mechanical testing of the lumbopelvic complex.
- To quantify location-specific material properties of bone and soft tissues in the lumbopelvic region.
Main Methods:
- Mechanical testing (bending, tensile, compression) on 91 specimen locations per cadaver (n=5).
- Defined boundary conditions and detailed specimen preparation protocols.
- Repeatability assessment through multiple measurements.
Main Results:
- Cortical bone: Elastic modulus 1750 MPa, ultimate strength 28.2 MPa.
- Trabecular bone: Elastic modulus 32.7 MPa, ultimate strength 1.26 MPa.
- Soft tissues: Fascial tissue (148 MPa, 14.3 MPa), Ligamentous tissue (103 MPa, 10.7 MPa).
Conclusions:
- The developed methods enable the first identification of location-specific material properties for the lumbopelvic system.
- Quantified properties improve comparability, support accurate numerical simulations, and aid implant design.
- Standardized methods facilitate widespread application and database accumulation for future research.
Related Concept Videos
01:08Bending of Members Made of Several Materials
260
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
260
01:26Muscles of the Pelvic Floor and Perineum
2.1K
The muscles of the pelvic floor and perineum are crucial for supporting the pelvic organs, controlling continence, and aiding in sexual function, childbirth, and core stability. They are typically divided into the superficial perineal layer and the deep pelvic floor layer.
Perineal Layer
The perineum is a diamond-shaped area below the pelvic diaphragm, divided into an anterior urogenital triangle that contains the external genitals and a posterior anal triangle housing the anus. The urogenital...
Perineal Layer
The perineum is a diamond-shaped area below the pelvic diaphragm, divided into an anterior urogenital triangle that contains the external genitals and a posterior anal triangle housing the anus. The urogenital...
2.1K
01:20Introduction to the Skeletal System
6.8K
The skeletal system is the central framework of the body, consisting of different connective tissues: bones, cartilage, tendons, and ligaments.
Components of the Skeletal System
Bone, or osseous tissue, is a hard connective tissue that forms an internal support structure for the human body. Bones shield vulnerable organs and soft tissue from external forces. For example, the vertebral bones protect and support the spinal cord.
Cartilage, a semi-rigid connective tissue found in regions such as...
Components of the Skeletal System
Bone, or osseous tissue, is a hard connective tissue that forms an internal support structure for the human body. Bones shield vulnerable organs and soft tissue from external forces. For example, the vertebral bones protect and support the spinal cord.
Cartilage, a semi-rigid connective tissue found in regions such as...
6.8K
01:16Bones of the Lower Limb: Femur and Patella
2.9K
The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the...
2.9K
01:09Overview of the Axial Skeleton
5.9K
The skeleton is subdivided into two major divisions—the axial skeleton and the appendicular skeleton. The axial skeleton forms the vertical, central axis of the body. It includes all of the bones of the head, neck, chest, and back. It protects the brain, spinal cord, heart, and lungs. It also serves as the attachment site for muscles that move the head, neck, and back and for muscles that act across the shoulder and hip joints to move their corresponding limbs.
The axial skeleton of the...
The axial skeleton of the...
5.9K
01:20Normal Strain under Axial Loading
656
Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...
656