PURPOSE: This trial was designed to evaluate the impact of physical characteristics such as body mass index, body weight and height on distal stem migration of a cementless femoral component, as the influence of obesity on the outcome of THA is still debated in literature and conflicting results have been found. METHODS: In this retrospective cohort study, migration patterns for 102 implants were analysed using the Einzel-Bild-Roentgen-Analyse (EBRA-FCA, femoral component analysis). In all cases the Vision 2000 stem was implanted and combined with the Duraloc acetabular component (DePuy, Warsaw, Indiana). RESULTS: The mean follow-up was 93 months. EBRA-FCA evaluations revealed a mean subsidence of 1.38 mm after two years, 2.06 mm after five and 2.24 mm after seven years. Five stems loosened aseptically. Correlation between increased migration over the whole period and aseptic loosening was highly significant (p < 0.001). Surgical technique had a significant influence on migration and stem stability (p = 0.002) but physical patient characteristics such as body weight over 75 kg and height over 165 cm also significantly influenced stem subsidence towards progressive migration (p = 0.001, p < 0.001). However, a high BMI did not trigger progressive stem migration (p = 0.87). Being of the male gender raised the odds for increased migration (p = 0.03). CONCLUSION: Physical characteristics such as body weight and height showed significant influence on migration patterns of this cementless femoral component. The operating surgeon should be aware that body weight above 75 kg and height over 165 cm may trigger increased stem migration and the surgeon should aim to fit these prostheses as tightly as possible. However this study demonstrates that a high BMI does not trigger progressive stem migration. Further investigations are needed to confirm our findings.
PURPOSE: This trial was designed to evaluate the impact of physical characteristics such as body mass index, body weight and height on distal stem migration of a cementless femoral component, as the influence of obesity on the outcome of THA is still debated in literature and conflicting results have been found. METHODS: In this retrospective cohort study, migration patterns for 102 implants were analysed using the Einzel-Bild-Roentgen-Analyse (EBRA-FCA, femoral component analysis). In all cases the Vision 2000 stem was implanted and combined with the Duraloc acetabular component (DePuy, Warsaw, Indiana). RESULTS: The mean follow-up was 93 months. EBRA-FCA evaluations revealed a mean subsidence of 1.38 mm after two years, 2.06 mm after five and 2.24 mm after seven years. Five stems loosened aseptically. Correlation between increased migration over the whole period and aseptic loosening was highly significant (p < 0.001). Surgical technique had a significant influence on migration and stem stability (p = 0.002) but physical patient characteristics such as body weight over 75 kg and height over 165 cm also significantly influenced stem subsidence towards progressive migration (p = 0.001, p < 0.001). However, a high BMI did not trigger progressive stem migration (p = 0.87). Being of the male gender raised the odds for increased migration (p = 0.03). CONCLUSION: Physical characteristics such as body weight and height showed significant influence on migration patterns of this cementless femoral component. The operating surgeon should be aware that body weight above 75 kg and height over 165 cm may trigger increased stem migration and the surgeon should aim to fit these prostheses as tightly as possible. However this study demonstrates that a high BMI does not trigger progressive stem migration. Further investigations are needed to confirm our findings.
Authors: John C Clohisy; George Calvert; Frank Tull; Douglas McDonald; William J Maloney Journal: Clin Orthop Relat Res Date: 2004-12 Impact factor: 4.176
Authors: Stefan Budde; Frank Seehaus; Michael Schwarze; Christof Hurschler; Thilo Floerkemeier; Henning Windhagen; Yvonne Noll; Max Ettinger; Fritz Thorey Journal: Int Orthop Date: 2015-09-25 Impact factor: 3.075
Authors: Benjamin Buecking; Christoph Kolja Boese; Verena Anna Bergmeister; Michael Frink; Steffen Ruchholtz; Philipp Lechler Journal: Int Orthop Date: 2015-07-02 Impact factor: 3.075
Authors: Jeffrey J Cherian; Julio J Jauregui; Samik Banerjee; Todd Pierce; Michael A Mont Journal: Clin Orthop Relat Res Date: 2015-02-26 Impact factor: 4.176
Authors: Erik Schiffner; David Latz; Simon Thelen; Jan P Grassmann; Alfred Karbowski; Joachim Windolf; Pascal Jungbluth; Johannes Schneppendahl Journal: J Orthop Date: 2019-04-08
Authors: Thilo Floerkemeier; Michael Schwarze; Christof Hurschler; Jens Gronewold; Henning Windhagen; Gabriela von Lewinski; Stefan Budde Journal: Biomed Res Int Date: 2017-04-13 Impact factor: 3.411
Authors: Karl Philipp Kutzner; Mark Predrag Kovacevic; Tobias Freitag; Andreas Fuchs; Heiko Reichel; Ralf Bieger Journal: J Orthop Surg Res Date: 2016-03-07 Impact factor: 2.359