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- Talk
- 07/09/0020
- UK
A Combined Musculoskeletal and Finite Element Approach to Investigating Bone Loss in Above-knee Amputees
Description
In this presentation, Joshua Kaufmann discusses the implications of bone health and bone loss in above-knee amputees. He describes that a significant reduction in hip bone density within this population can lead to diagnoses of osteopenia or osteoporosis, notably affecting individuals across all age groups, contrary to the conventional association of these conditions with older adults.
Kaufmann details a computational modeling approach used to investigate the mechanical stimuli received by the hip post-amputation, aiming to understand how these changes influence bone structure. This method relies on musculoskeletal modeling tailored to the individual characteristics of a 32-year-old bilateral traumatic amputee. The modeling reveals that the hip experiences increased loading due to compensatory mechanisms as amputees rely on their residual limbs.
In contrast, the knee joint experiences reduced loading, which contributes to a lack of stimulation and heightened bone resorption risk in critical regions of the femur. The findings underline that despite greater forces acting at the hip, overall mechanical stimulation in the femur is compromised, leading to potential long-term bone health issues.
The presentation concludes by highlighting the importance of prosthetic design in addressing these challenges. Modifying prosthetic sockets to enhance loading distribution may improve bone health by mimicking physiological conditions pre-amputation. This research suggests that understanding and addressing the mechanical factors contributing to bone loss in amputees could inform more effective treatment and mitigation strategies.