P
PRP
PRP is an abbreviation for 'Platelet Rich Plasma', a concentration of platelets separated from a blood sample by centrifuge. Page updated February 2024 by Dr Sheila Strover (Clinical Editor)
Pseudo
Pseudo means 'false'. So 'pseudo-locking', for example, is when the knee appears to be stuck in a bent position, but readily unlocks.
Pseudolocking
Pseudolocking is the condition where the knee suddenly is unable to fully extend, but then a little manoeuvre allows it to loosen up and have full range of motion again.
PT
PT is an abbreviation of 'physical therapist'.
Pulmonary embolus
A pulmonary embolus is a blood clot shooting to the lungs, usually from a clot in the leg veins.
PVNS
PVNS is an abbreviation of 'pigmented villonodular synovitis'.
PWB
PWB is an abbreviation for 'partial weight bearing'.