Silva Handout - 10/19/2010 Why Study Musculoskeletal...

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10/19/2010 1 Musculoskeletal Biomechanics and Mechanobiology Matthew J. Silva, Ph.D. Department of Orthopaedic Surgery [email protected] Oct. 20, 2010 Why Study Musculoskeletal Biomechanics • Understand normal and pathological behavior of the musculoskeletal system • Intervene to diagnose prevent treat or Intervene to diagnose , prevent , treat or repair musculoskeletal disease 2 What is the role of the skeleton? • Mechanical – enable motion – protect organs • Metabolic – mineral (Ca++) reserve 3 Structure --- Material I-beam Steel Tree Wood Femur (whole-bone) Bone 4 • Mechanical behavior of structure (i.e., structural properties) depend on geometry and material properties of constituent material. • Structural strength (Force, N) • Material strength (Force/Area; N/mm 2 ) Musculoskeletal Tissues (Materials) • Cortical bone – shafts of long bones; covering of skull • Trabecular • Tendon – connects muscle to bone • Ligament (cancellous) bone – ends of long bones/joints, – “filling” of skull, pelvis • Muscle – force generation – bone-to-bone; joint stability • Cartilage – joint covering; low friction 5 Netter, Atlas of Human Anatomy 6
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10/19/2010 2 Lateral Medial Netter, Atlas of Human Anatomy Radiograph (x-ray) of Proximal Femur Carter et al. 1996 What are design criteria for bones? • Mechanical/physical – stiff – strong – tough • Mechanobiological – adaptive – self-repair • catastrophic failure – lightweight • microdamage (fatigue) 9 Cortical and Trabecular Bone (“Materials”) Trabecular Bone Cortical Bone 10 Mechanical properties of bones
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This note was uploaded on 02/14/2012 for the course NUBITRY 3304 taught by Professor Various during the Spring '01 term at Albertus Magnus.

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Silva Handout - 10/19/2010 Why Study Musculoskeletal...

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