P
Placebo
A placebo is a dummy drug or dummy surgery used in clinical trials.
Platelet Rich Plasma
Platelet Rich Plasma is a blood preparation where a portion of plasma rich in platelets is extracted from the rest of the blood.
PLC
PLC is an abbreviation of 'posterolateral corner', that region at the side of the knee towards the back.
Plica
A plica is a ribbon-like fold of joint lining (synovium) which may be present in any knee as an embryological remnant. Page updated June 2024 by Dr Sheila Strover (Clinical Editor)
Plica surgery
Plica surgery in the knee is performed to remove a plical fold of joint lining that is being troublesome, perhaps because it is catching in the joint.
Plica syndrome
Plica syndrome is a collection of symptoms commonly experienced together in the knee, when a fold of joint lining called a plica is irritated, thickened and intermittently catches between other structures in the joint. Page updated May 2024 by Dr Sheila Strover (Clinical Editor)
Pluripotent
Pluripotent - referring to stem cells - a cell that has the capacity to differentiate into any cell type within the three main tissue groups of the body.
Plyometrics
Plyometrics are advanced rehabilitation exercises relying on speed and force. Page updated March 2024 by Dr Sheila Strover (Clinical Editor)
Polyarthropathy
Polyarthropathy means joint problems - such as inflammation - affecting several joints.
Polyethylene
Polyethylene is a variety of plastic.