Backgraund: 

Platelet-rich plasma (PRP) is defined as an autologous biological product, derived from the patient´s blood, obtained after a centrifugation process
There are multiple marketed systems to obtain it.

Objective:

To evaluate the analgesic efficacy of PRP using visual analogue scale (VAS), patient satisfaction and side effects.

Methods: 

A retrospective observational study took place from october to december 2018.
The technique consisted in sterile extraction of 20ml of peripheral venous blood from the patient. 2ml of sodium citrate was added and introduced inside a centrifuge for 8 minutes at 1800 rpm. Subsequently, it was collected and activated before being used with calcium chloride. 


Results:

From October to December 2018 the data of 26 patients who have undergone PRP infiltration in our pain unit have been collected.
The average age was 58,5 years (25-85), 14 men and 12 women.
The improvement of pain was assessed one month after infiltration by visual analogue scale (VAS). The average of VAS improvement was 4,5 ( 0-10).
The site of infiltration was: 65% in knee osteoarthritis (17 patients), 15% in hip osteoarthritis (4), 7% in De Quervain (2), 3% in peroneal tendinopathy (1) and 7% (2 ) in Achilles tendinopathy.
The patient satisfaction was collected through satisfaction questionnaire.
We did not find complications associated with infiltration.

Conclusions: 
There is still a huge diversity between methods of obtaining and applying PRP, that makes difficult to take decisive conclusions. It is essential research both the types of PRP growth factors as well as dosage protocols and application instructions

PLATELET RICH PLASMA INJECTIONS PERFORMED IN OUR PAIN UNIT DURING THREE MONTHS