Bone Fractures and Healing Explained (Ch6 Part 2)

Welcome back to Chapter 6! In this lecture, we examine how bones fracture, heal, grow, and help regulate calcium levels throughout the body. Topics Covered Fracture Classification Open (compound) fractures Closed (simple) fractures Complete vs. incomplete fractures Displaced vs. nondisplaced fractures Major Fracture Types Transverse fractures Spiral fractures Comminuted fractures Impacted fractures Oblique fractures Greenstick fractures Fracture Identification Reading X-rays Recognizing fracture patterns Clinical examples and injury mechanisms Bone Repair Process Hematoma formation Soft callus formation Spongy bone replacement Bone remodeling Timeline of fracture healing Calcium Homeostasis Calcium functions in the body Muscle contraction Nervous system signaling Bone mineral storage Hormonal Regulation Parathyroid hormone (PTH) Calcitonin Osteoblasts Osteoclasts Blood calcium regulation Bone Growth Intramembranous ossification Endochondral ossification Appositional growth Growth plates (epiphyseal plates) By the end of this lecture, you'll be able to identify major fracture types, describe the stages of bone healing, explain calcium homeostasis, and compare the major mechanisms of bone growth.