Musculoskeletal System IV - LECTURE SLIDES

Musculoskeletal System IV - LECTURE SLIDES - Ligaments...

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1 Ligaments, Tendons and Muscle Ligaments and Tendons • Bind together the musculoskeletal system • Extremely strong • Sinew = tendon means tough, strong • Role is to stabilize the skeleton Ligaments • Tough bands of connective tissue • Originate and insert on bone • Maintain correct bone and joint geometry • Together with the articular contours they determine range of motion • If force a joint beyond normal range of motion (ROM) may tear ligament • Lax or torn ligaments may lead to abnormal joint motion and precipitate cartilage breakdown Ligament composition 55-65% Water 70-80% Collagen 10-15% Elastin 1-3% Proteoglycans
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2 Tendons • Healthy tendons are Brilliant white in color • Shape and attachment to bone varies • Wide and flat, cylindrical to fan shaped • Aponeurosis – white, flattened tendinous expansion, broad flat tendon Tendon composition 60-75% Water 75-85% Collagen <3% Elastin 1-2% Proteoglycans Muscles • Muscles function to produce directed organized movement
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Musculoskeletal System IV - LECTURE SLIDES - Ligaments...

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