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B ONE R EPAIR. H EMATOMA A hematoma is a localized collection of blood outside the blood vessels but confined within an organ or space. There are several.

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Presentation on theme: "B ONE R EPAIR. H EMATOMA A hematoma is a localized collection of blood outside the blood vessels but confined within an organ or space. There are several."— Presentation transcript:

1 B ONE R EPAIR

2 H EMATOMA A hematoma is a localized collection of blood outside the blood vessels but confined within an organ or space. There are several types of hematomas Subungual hematoma Perichondral hematoma Subarachnoid hematoma Subdural hematoma There are different degrees too Petechiae Purpura Ecchvmosis

3 W HAT REALLY IS A BONE HEMATOMA ?

4 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

5 W HAT IS AN EXTERNAL C ALLUS

6 W HAT IS AN INTERNAL CALLUS ?

7 C ALLUS O SSIFICATION 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

8 C ALLUS OSSIFICATION

9 B ONE R EMODELING mature bone tissue is removed from the skeleton new bone tissue is formed reshape or replacement of bone following injuries like fractures but also micro- damage, 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

10 B ONE R EMODELING

11 L ET ’ S R EVIEW !!


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