IPHY 2420 Lecture Notes - Lecture 9: Hip Fracture, Bone Remodeling, Bone
18 Oct 2016
School
Department
Course
Professor
Document Summary
Many small bones (wrists, hands, feet) and all cortical. Faster turnover rate (more sensitive to nutritional deficiencies) Bone remodeling is a balance between resorption and formation. Surface of bones is broken down by osteoclasts. Cells that erode the surface of bones. Repair bone or obtain minerals to repair another. Produce the collagen containing component of bone. Provides a full body scan or peripheral regions (wrist, heel) Compares bone density to that of a healthy 30-year-old. Common in the hip and the spine. 24% of individuals over 50 who have a hip fracture within 1 year. ~52million americans have osteoporosis and low bone mass. 1 in 2 women and 1 in 4 men age 50+ will break a bone due to osteoporosis. History of amenorrhea (failure to menstruate) in women with inadequate nutrition. Diet high in fruits and vegetables are associated with improved bone health. Regular exercise stresses bones, leading to increased bone mass.
