This is a randomized double-blinded randomized comparison between injection of platelet rich plasma (PRP) and placebo for thumb basale osteoarthritis.
Osteoarthritis in the thumb base
Radiological Eaton Littler class 1-3.
Clinical signs of thumb base osteoarthritis )pain at palpation of the CMC-1 joint and pain during provocation/grinding test).
Rheumatoid arthritis
Ongoing infection in the hand or wrist
History of gout or pseudogout in the hand
Inability to co-operate with the follow-up protocol (language difficulties, severe psychiatric disorder, cognitive impairment, drug addiction).