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Organ transplantation is a medical procedure in which an organ is removed from one body and placed in the body of a recipient, to replace a damaged or missing organ. The donor and recipient may be at the same location, or organs may be transported from a donor site to another location.
This can sometimes be done with orbital exenteration (removal of the eye and the orbital contents surrounding the eye) or by enucleation (removal of the eyeball). Meniscectomy surgical removal of all or part of a torn meniscus, which is a common knee joint injury. Partial meniscectomy is preferred by surgeons over total meniscectomy.
Usually, the organs are removed in a systematic fashion. Making a decision as to what order the organs are to be removed will depend highly on the case in question. Organs can be removed in several ways: The first is the en masse technique of Letulle whereby all the organs are removed as one large mass. The second is the en bloc method of Ghon.
-ectomy : surgical removal (see List of -ectomies). The term 'resection' is also used, especially when referring to a tumor.-opsy : looking at-oscopy : viewing of, normally with a scope-ostomy or -stomy : surgically creating a hole (a new "mouth" or "stoma", from the Greek στόμα (stóma), meaning "body", see List of -ostomies)
The most commonly used technique is orthotopic transplantation, in which the native liver is removed and the donor organ is placed in the same anatomic location as the original liver. Liver transplantation nowadays is a well accepted treatment option for end-stage liver disease and acute liver failure.
If the organ donor is human, most countries require that the donor be legally dead for consideration of organ transplantation (e.g. cardiac death or brain death). For some organs, a living donor can be the source of the organ. For example, living donors can donate one kidney or part of their liver to a well-matched recipient. [2]
Surgical removal of dead tissue is usually necessary to prevent gangrenous infection. Surgically removed body parts are typically disposed of as medical waste, unless they need to be preserved for cultural reasons, as described above. Conversely, donated organs or tissue may live on long after the death of an individual.
Skin tissue can be regenerated in vivo or in vitro. Other organs and body parts that have been procured to regenerate include: penis, fats, vagina, brain tissue, thymus, and a scaled down human heart. One goal of scientists is to induce full regeneration in more human organs. There are various techniques that can induce regeneration.