Evaluation of two different types of radial head prosthesis in practical use. Using either Evolve? or MoPyC? radial head prosthesis in the treatment of comminuted radial head fractures

摘要

The aim of this retrospective study was to undertake a comparative evaluation of the Evolve? modular metallic radial head implant prosthesis and the MoPyC? pyrocarbon prosthesis in acute care. Seventyfive patients having a comminuted radial head fracture with an Evolve? prosthesis (=G1) and 11 with a MoPyC? prosthesis (=G2) were available for a follow-up. Postoperative patient outcomes were evaluated according to a standardized follow-up protocol which included the Morrey rating system. Assessment criteria were range of motion (ROM), functional scores, and rate of complications. G1 showed a mean Morrey score of 86 points. Four direct prosthesis complications were observed in this group (n=75). The average achieved Morrey score in G2 was 84 points. In this group (n=11), 2 direct prosthesis complications were diagnosed. The average range of motion did not differ greatly between both groups. Radial head replacement with either prosthesis yielded sufficient to satisfactory results in a mid-term perspective regarding the range of motion and function of the elbow joint when performed in carefully selected patients. The Evolve? Prothesis appears to show a slightly lower rate of complication by way of a similar functional outcome.