CC BY-NC-ND 4.0 · Rev Bras Ortop (Sao Paulo) 2019; 54(04): 447-452
DOI: 10.1055/s-0039-1694713
Artigo Original | Original Article
Sociedade Brasileira de Ortopedia e Traumatologia. Published by Thieme Revnter Publicações Ltda Rio de Janeiro, Brazil

Is The Size of the Currently Available Implants for Total Hip Arthroplasty Adequate for Our Population?[*]

Article in several languages: português | English
1  Serviço de Cirurgia do Quadril, Hospital Angelina Caron, Campina Grande do Sul, Paraná, PR, Brasil
,
Gabriella Maira Rodrigues Barbosa
1  Serviço de Cirurgia do Quadril, Hospital Angelina Caron, Campina Grande do Sul, Paraná, PR, Brasil
,
Anderson Emanuel Kumandala Velho
1  Serviço de Cirurgia do Quadril, Hospital Angelina Caron, Campina Grande do Sul, Paraná, PR, Brasil
,
Gladyston Roberto Matioski Filho
1  Serviço de Cirurgia do Quadril, Hospital Angelina Caron, Campina Grande do Sul, Paraná, PR, Brasil
,
Lucas Dias Godoi
1  Serviço de Cirurgia do Quadril, Hospital Angelina Caron, Campina Grande do Sul, Paraná, PR, Brasil
,
Juan R.V. Capriotti
1  Serviço de Cirurgia do Quadril, Hospital Angelina Caron, Campina Grande do Sul, Paraná, PR, Brasil
› Author Affiliations
Further Information

Publication History

21 September 2018

02 February 2019

Publication Date:
20 August 2019 (online)

Abstract

Objective To determine if the dimensions of selected national and imported implants used in total hip arthroplasty surgeries are adequate regarding the anthropometric profile of the Brazilian population.

Methods A retrospective study of patients submitted to primary total hip arthroplasty. Patients with femoral or acetabular morphological deformities that could influence the choice of implant size, including dysplasia and previous fractures, were excluded from the study. Two national implants and six imported implants were included in the study. Every patient was treated by the same group, with one of the four senior authors or under their strict supervision, following the same surgical technique. The data were analyzed regarding gender, age, fixation type and implant model.

Results The analysis of 682 hips submitted to total hip arthroplasty demonstrated that 2 models of cemented femoral stems and 1 of non-cemented stem did not seem to be perfectly adequate for the femoral morphology of the studied population, since these 3 implants were mostly used in the smallest size available, resulting in a non-Gaussian curve. The mean diameter of the native acetabulum was 54 mm in men and 52 mm in women.

Conclusion Out of the eight models studied, five were deemed adequate for the studied population. The other three models available in our market (two national models and one imported model) apparently require more appropriate sizing. We emphasize that anthropometric studies of the Brazilian hip are necessary to give scientific subsidies to the ideal implant design for our market.

* Work developed at the Hip Surgery Service, Hospital Angelina Caron, Campina Grande do Sul, Paraná, PR, Brazil.