PURPOSE: Modular necks used in total hip replacement (THR) have become an increasingly discussed topic with the recent recall of multiple modular systems, but it is anticipated that outcomes for these devices are highly design-specific. The objectives of this study were to determine if the survivorship and complication rates of a specific modular femoral stem (PROFEMUR® Z, MicroPort Orthopedics Inc., Arlington, TN, USA) were significantly lower than those of all cementless fixed neck stems in an arthroplasty registry. METHODS: The database of an arthroplasty registry was searched for all patients implanted with a specific modular stem and all those implanted with cementless fixed neck stems. Kaplan-Meier survivorship and complication rates were compared between the two groups. RESULTS: The 12-year survivorship of the modular stem (95.8%) was not significantly less than that of all cementless fixed neck stems (96.1%). There was also no difference in revision rates for dislocation, periprosthetic fractures, aseptic loosening or septic loosening between the two groups. CONCLUSIONS: The use of the specific modular stem did not adversely affect long-term component survivorship or complication rates when compared to all cementless fixed neck THRs in an arthroplasty registry.
PURPOSE: Modular necks used in total hip replacement (THR) have become an increasingly discussed topic with the recent recall of multiple modular systems, but it is anticipated that outcomes for these devices are highly design-specific. The objectives of this study were to determine if the survivorship and complication rates of a specific modular femoral stem (PROFEMUR® Z, MicroPort Orthopedics Inc., Arlington, TN, USA) were significantly lower than those of all cementless fixed neck stems in an arthroplasty registry. METHODS: The database of an arthroplasty registry was searched for all patients implanted with a specific modular stem and all those implanted with cementless fixed neck stems. Kaplan-Meier survivorship and complication rates were compared between the two groups. RESULTS: The 12-year survivorship of the modular stem (95.8%) was not significantly less than that of all cementless fixed neck stems (96.1%). There was also no difference in revision rates for dislocation, periprosthetic fractures, aseptic loosening or septic loosening between the two groups. CONCLUSIONS: The use of the specific modular stem did not adversely affect long-term component survivorship or complication rates when compared to all cementless fixed neck THRs in an arthroplasty registry.
Authors: Aileen Clarke; Ruth Pulikottil-Jacob; Amy Grove; Karoline Freeman; Hema Mistry; Alexander Tsertsvadze; Martin Connock; Rachel Court; Ngianga-Bakwin Kandala; Matthew Costa; Gaurav Suri; David Metcalfe; Michael Crowther; Sarah Morrow; Samantha Johnson; Paul Sutcliffe Journal: Health Technol Assess Date: 2015-01 Impact factor: 4.014
Authors: Simon Kovač; Blaž Mavčič; Marko Kotnik; Vesna Levašič; Mateja Sirše; Samo Karel Fokter Journal: Clin Orthop Relat Res Date: 2019-06 Impact factor: 4.176
Authors: José M Pelayo-de-Tomás; José L Rodrigo-Pérez; Carlos D Novoa-Parra; Alejandro Lizaur-Utrilla; María Morales-Suárez-Varela; José Antonio Blas-Dobón Journal: Eur J Orthop Surg Traumatol Date: 2017-10-29
Authors: Jan Schmolders; Grigoris Amvrazis; Peter H Pennekamp; Andreas Christian Strauss; Max Julian Friedrich; Matthias D Wimmer; Yorck Rommelspacher; Dieter Christian Wirtz; Thomas Wallny Journal: Int Orthop Date: 2016-05-30 Impact factor: 3.075