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Acta ortopédica mexicana
versión impresa ISSN 2306-4102
Resumen
BUSTAMANTE-RECUENCO, D et al. Mid-term complications of the monopolar, modular radial head prosthesis. Acta ortop. mex [online]. 2019, vol.33, n.2, pp.73-80. Epub 28-Mayo-2021. ISSN 2306-4102.
Introduction:
The objective of this study is to assess the type, frequency and severity of complications after the implantation of the modular monopolar radial head prosthesis.
Material and methods:
Forty-seven patients with 48 radial head prostheses implanted between 2009 and 2017 were reviewed retrospectively. Patients were evaluated clinical and radiographically for a mean follow-up of 43.55 months (range: 12-89).
Results:
The same type of prosthesis was implanted in every patient (Ascension Modular Radial Head). The average score in the Mayo Elbow Performance Score was 88.29 ± 9.9 points. During the follow-up, three patients (6.25%) suffered from continuous pain. Twelve cases (25.5%) showed radiological oversizing, though only five were symptomatic. Heterotopic ossification was detected in twenty-seven cases (57.4%). Eleven patients (23.4%) developed postoperative stiffness. Nineteen cases (40.42%) showed periprosthetic osteolysis, from which seven were symptomatic. Thirteen patients (27%) developed surgery-related complications: three cases of infection, four cases of symptomatic loosening, two neurapraxies, one instability and three cases of oversizing with associated stiffness. Nine patients (18.75%) required reintervention.
Discussion:
Our study obtains a 27% of overall complications, mostly related to oversizing and prosthetic loosening, and 19% of reinterventions. These results are similar to those presented in previous studies, with variations depending on the time of follow-up. Further research is also required to evaluate long-term results and the potential progression of the radiographic findings.
Conclusion:
Taken together, these data stress the need for improvement in both the surgical technique and the design of the implants.
Palabras llave : Elbow; radial head arthroplasty; fracture; complications.