I
Intraarticular
'Intra' ='within' and 'articular' ='the joint', so if something is intraarticular it means that it is within the cavity of the joint.
Intramedullary nail
An intramedullary nail is a metal rod used for fractures of long bones, where the rod is driven through the centre part of the bones to hold them in good alignment so that they can heal properly.
Intramuscular
Intramuscular means into the muscle (eg an injection) or inside the muscle (eg a bleed).
Intramuscular haematoma
'Intra' -'within' and 'haematoma'='a confined lump of blood', so an intramuscular haematoma is bleeding within the muscle tissues.
In vitro
In vitro ('within glass') means within laboratory equipment, such as test tubes and petri dishes, but it may also mean any laboratory model used for research, such as a mechanical simulator.
In vitro fertilisation
In vitro fertilisation is the procedure of fertilising an egg outside of the body in a laboratory.
In vivo
In vivo is some procedure performed within the living body.
IPP
IPP is an abbreviation for infrapatellar plica.
IPP-Fat Pad Complex
The IPP-Fat Pad Complex is the anatomical connection of the infrapatellar plica and the fat pad. Page updated December 2023 by Dr Sheila Strover (Clinical Editor)
ISAR
International Society of Arthroplasty Registers