BONE REPAIR HEMATOMA A hematoma is a There are different localized collection of degrees too blood outside the blood Petechiae vessels but confined Purpura within an organ or Ecchvmosis space. There are several types of hematomas Subungual hematoma Perichondral hematoma Subarachnoid hematoma Subdural hematoma WHAT REALLY IS A BONE HEMATOMA? CALLUS FORMATION Callus- is a mass of tissue that forms at a fracture site and connects the broken ends of the bone Internal Callus- forms between the ends of the broken bone, and in the marrow cavity if the fracture occures in the diaphysis of a long bone External Callus- forms a collar around the opposing ends of the bone fragments WHAT IS AN EXTERNAL CALLUS WHAT IS AN INTERNAL CALLUS? CALLUS OSSIFICATION 1 of 2 essential processes during fetal development of the skeletal system Creates bone tissue Vital during rudimentary formation of long bones, growth and length of long bones, and natural healing of bone fractures Results in stronger external callus Internal callus forms and replaces hematoma, osteoblasts from periosteum enter internal callus and begin to produce bone Woven, cancellous bone replaces cartilage of internal and external callus which further stabalizes the broken bone CALLUS OSSIFICATION BONE REMODELING mature bone tissue is removed from the skeleton new bone tissue is formed reshape or replacement of bone following injuries like fractures but also microdamage, which occurs during normal activity first year of life, almost 100% of the skeleton is replaced. In adults, remodeling proceeds at about 10% per year BONE REMODELING LET’S REVIEW!!