Resumo

BULJUBASICH, Martín et al. Artroplastia total de cadera primaria con vástagos cortos en pacientes menores de 20 años. Rev. Asoc. Argent. Ortop. Traumatol. [online]. 2022, vol.87, n.5, pp.636-644. ISSN 1852-7434.  http://dx.doi.org/https://doi.org/10.15417/issn.1852-7434.2022.87.5.1599.

Introduction: To our knowledge, there is no published literature on the outcomes of short-stem total hip arthroplasty (THA) in patients under 20 years old. This study aimed to analyze clinical, radiological, and functional outcomes in patients under 20 years of age undergoing THA with a short uncemented 2B femoral stem. Materials and Methods: We carried out a retrospective study of 13 patients (16 THAs) treated between January 2006 and January 2021. The mean age and BMI were 16.5±2.5 years and 22.74±4.06 kg/m2, respectively. The mean follow-up was 43.3 months (range 12-128, SD ± 33.45). Surgical indications, as well as functional and radiologic outcomes, were analyzed. Implant survival was calculated with the Kaplan-Meier estimate. Results: The predominant indication was avascular necrosis (9/16 hips [56%]), of which 66% were associated with prolonged use of corticosteroids. Eight (50%) of the cases had undergone surgeries before the THA. The Harris hip score improved significantly from 33±16.5 to 94±5.6 (p<0.001). Ten (76%) patients required assistive devices to walk preoperatively, and no patient required them at the end of follow-up. Radiolucency was evident in one acetabular component, without clinical implications. There were no signs of femoral component loosening. The implant survival was 100% at the last follow-up. Conclusions: Short stems in primary THAs in patients under 20 years of age with advanced hip osteoarthritis showed clinical, functional, and radiological outcomes comparable to those previously reported in the literature for conventional stems, with the particularity of being less invasive and sparing femoral bone stock.

Palavras-chave : Total hip arthroplasty; total hip replacement; pediatric patients; young adults.

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