Ucpunar, Hanifi; Camurcu, Yalkin; Altay, Ridvan; Duman, Serda; Cobden, Adem; Sofu, Hakan

Background:Radial head arthroplasty is an alternative treatment for complex radial head fractures that are not appropriate for fixation. No study to date has reported the outcomes of monoblock ultrahigh molecular weight polyethylene (UHMW-PE) radial head prosthesis (RHP) for the treatment of radial head fracture. We aimed to evaluate the functional and radiographic outcomes of patients with unreconstructable acute radial head fractures treated with a monoblock UHMW-PE RHP.Methods:Patients who underwent UHMW-PE RHP placement for the treatment of radial head fracture were included in this retrospective case series. Patients who did not complete follow-up were excluded. Primary outcome measurements were the Mayo Elbow Performance Score (MEPS) and the Disabilities of Arm, Shoulder, and Hand (DASH) score. The latest follow-up physical examination and radiographs were evaluated for loosening, subluxation, and dislocation. Postoperative complications and need for further surgery were noted.Results:Eleven patients (four female and seven male patients) with a mean follow-up of 18.5 mo were evaluated. The mean MEPS was 79.5 (range, 65-100) at 3 mo postoperatively and 85.9 (range, 75-100) at the latest follow-up. The mean DASH score was 10.8 (range, 3-20) at 3 mo postoperatively and 8.7 (0-20) at the latest follow-up. No complications were encountered during follow-up.Conclusions:Radial head arthroplasty with a monoblock UHMW-PE RHP is safe and effective at short-term follow-up for treating acute unreconstructable radial head fractures with satisfactory functional and radiographic outcomes.Level of Evidence:Level IV.