Granulation: Difference between revisions

Latest revision as of 03:46, 13 February 2025

A process in wound healing and tissue repair

Granulation[edit]

Granulation tissue forming in a healing wound.

Granulation is a crucial process in the wound healing and tissue repair phases of the healing process. It involves the formation of new connective tissue and tiny blood vessels that form on the surfaces of a wound during the healing process. This tissue is called "granulation tissue" due to its granular appearance.

Process[edit]

Granulation occurs during the proliferative phase of wound healing. This phase follows the inflammatory phase and precedes the maturation phase. During granulation, fibroblasts, a type of cell, proliferate and synthesize collagen, which is a key component of the extracellular matrix. This matrix provides a scaffold for new tissue formation.

Angiogenesis[edit]

A significant aspect of granulation is angiogenesis, the formation of new blood vessels. This process is essential for supplying nutrients and oxygen to the healing tissue. Endothelial cells migrate and form new capillary loops, which give granulation tissue its characteristic red, granular appearance.

Fibroplasia[edit]

Fibroplasia is another critical component of granulation. Fibroblasts produce collagen and other extracellular matrix components, which help to fill the wound and provide strength to the new tissue. The balance between collagen synthesis and degradation is crucial for proper wound healing.

Clinical Significance[edit]

Granulation tissue is a positive indicator of healing. However, excessive granulation, known as "proud flesh" or "hypergranulation," can impede wound closure and may require medical intervention. Proper wound care and management are essential to promote healthy granulation and prevent complications.

Related pages[edit]

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-'''Granulation''' is a key process in the healing of a wound. It involves the formation of new connective tissue and tiny blood vessels that form on the surfaces of a wound during the healing process. Granulation tissue typically appears during the proliferative phase of healing.
+{{Short description|A process in wound healing and tissue repair}}
-==Overview==
+==Granulation==
-[[Granulation tissue]] is new connective tissue and microscopic blood vessels that form on the surfaces of a wound during the healing process. Granulation tissue typically appears during the proliferative phase of healing. Excess granulation tissue is a common problem in wound care, and its treatment can be challenging. The tissue itself is often described as "proud flesh".
+[[File:Granulation.jpg|thumb|right|Granulation tissue forming in a healing wound.]]
+Granulation is a crucial process in the [[wound healing]] and [[tissue repair]] phases of the [[healing]] process. It involves the formation of new connective tissue and tiny blood vessels that form on the surfaces of a wound during the healing process. This tissue is called "granulation tissue" due to its granular appearance.
-==Formation==
+==Process==
-The formation of granulation tissue is often the first sign that a wound is healing. During this process, fibroblasts migrate to the site of the injury, where they begin to produce collagen and other extracellular matrix proteins. This new tissue is highly vascularized and appears red or pink because of the many new blood vessels that are formed.
+Granulation occurs during the [[proliferative phase]] of wound healing. This phase follows the [[inflammatory phase]] and precedes the [[maturation phase]]. During granulation, fibroblasts, a type of cell, proliferate and synthesize [[collagen]], which is a key component of the extracellular matrix. This matrix provides a scaffold for new tissue formation.
-==Role in Wound Healing==
+===Angiogenesis===
-Granulation tissue plays a crucial role in the [[wound healing]] process. It provides the framework for the growth of new skin, known as epithelialization. The tissue also helps to prevent infection by serving as a barrier against bacteria and other pathogens.
+A significant aspect of granulation is [[angiogenesis]], the formation of new blood vessels. This process is essential for supplying nutrients and oxygen to the healing tissue. [[Endothelial cells]] migrate and form new capillary loops, which give granulation tissue its characteristic red, granular appearance.
+===Fibroplasia===
+[[Fibroplasia]] is another critical component of granulation. Fibroblasts produce collagen and other extracellular matrix components, which help to fill the wound and provide strength to the new tissue. The balance between collagen synthesis and degradation is crucial for proper wound healing.
 ==Clinical Significance==
-In some cases, granulation tissue can overgrow, leading to the formation of [[granuloma]]. This can occur in response to foreign bodies, certain types of infections, or long-standing wounds. Overgrowth of granulation tissue can also occur in certain diseases, such as [[pyogenic granuloma]].
+Granulation tissue is a positive indicator of healing. However, excessive granulation, known as "[[proud flesh]]" or "hypergranulation," can impede wound closure and may require medical intervention. Proper wound care and management are essential to promote healthy granulation and prevent complications.
-==Treatment==
+==Related pages==
-Treatment of excess granulation tissue may involve the use of topical corticosteroids, silver nitrate, or surgical removal. The choice of treatment depends on the size and location of the granulation tissue, as well as the overall health of the patient.
-==See Also==
 * [[Wound healing]]
-* [[Granuloma]]
+* [[Tissue repair]]
-* [[Pyogenic granuloma]]
+* [[Angiogenesis]]
+* [[Fibroblast]]
-[[Category:Medical terminology]]
+* [[Collagen]]
-[[Category:Wound care]]
-[[Category:Histopathology]]
-{{stub}}
+[[Category:Wound healing]]
-{{dictionary-stub1}}