Hand abrasion 100px 100px 100px 100px Day of injury 3 days later 17 days later 30 days later<unk>  refers to a living organism's replacement of destroyed or damaged tissue by newly produced tissue. In undamaged skin, the epidermis (surface layer) and dermis (deeper layer) form a protective barrier against the external environment. When the barrier is broken, a regulated sequence of biochemical events is set into motion to repair the damage. This process is divided into predictable phases: blood clotting (hemostasis), inflammation, tissue growth (cell proliferation), and tissue remodeling (maturation and cell differentiation). Blood clotting may be considered to be part of the inflammation stage instead of a separate stage. Deep<unk>  on shin with stitches healing over five weeks The<unk>  process is not only complex but fragile, and it is susceptible to interruption or failure leading to the formation of non-healing chronic<unk> s. Factors that contribute to non-healing chronic<unk> s are diabetes, venous or arterial disease, infection, and metabolic deficiencies of old age.<unk>  care encourages and speeds<unk>  via cleaning and protection from reinjury or infection. Depending on each patient's needs, it can range from the simplest first aid to entire nursing specialties such as<unk> , ostomy, and continence nursing and burn center care.
Wound healing
Bone healing
Wound ballistics
Bone hemostasis
Joint stability
Bodily integrity
Fresh gas flow
Mechanical properties of biomaterials