Health Sciences 3701A/B Lecture Notes - Lecture 3: Radiography, Urk, Percutaneous Vertebroplasty

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Ligaments + tendons decrease in strength with age. Ligaments : bands of flexible connective tissue (binds bones + reinforces joints) Tendons : fibrous connective tissue connecting muscle to bone or muscle to muscle. Types of bones : long, short, flat irregular. Compact/ cortical (hard) or cancellous ( spongy/ trabecular) Axial skeleton : skull, vertebral column, and thorax. Cervical (7), thoracic(12), lumbar (5), sacrum (5 fused) , coccyx (3-4 fused) Movement leverage system ( push/ pull) Most significant : gradual loss of calcium universal age related change. Peaks at age 35 gradual loss of mass & density. Osteoporosis: fractures, pain, immobility pathological calcium loss. Balance between bone formation vs. bone reabsorbtion = disturbed. Cartilage surfaces : rougher, decreased hydration ( water content) Intervetebral discs : shrink compression results in lack of flexibility + shortness. Bone reabsorbtion > bone formation ( gradual progressive change) More porous+ brittle bones: same chemical content.

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