La lesión del hueso subcondral no influye en los resultados clínicos a 12 semanas en los pacientes tratados con plasma rico en plaquetas intraarticular por artrosis de rodilla: estudio retrospectivo

Abstract

Objective

To determine if subchondral bone damage can influence the clinical results of intraarticular platelet-rich-plasma (PRP) treatment in knee osteoarthritic patients.

Material and methods

A retrospective review of patients treated with intraarticular PRP injections for knee osteoarthritis who previously underwent a Magnetic Resonance (MR) of the knee was performed. Visual Analogic Score (VAS) was assesed for pain, whereas WORMS MR score was adapted to assess the damage to the subchondral bone (WORMSsc score).

Results

Sixty-one patients were treated with 3 weekly injections of PRP. Mean VAS reduction was 27.67 ± 13.13 points (P<.005). WORMS sc mean score was 32 ± 18.5 points. NO correlation between WORMSsc and VAS was found. A moderate correlation between WORMSsc score and Preoperative VAS was found (r=.43; P<.005).

Conclusion

There is no correlation between the damage to the subchondral bone assesed by MR and pain relief at 12 weeks in patients treated with intraarticular platelet-rich plasma in patients with knee osteoarthritis. A greater damage to the subchondral bone could be associated with more pain.