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Table 1 Characteristics of the included studies

From: Fixed-bearing vs mobile-bearing prostheses for total knee arthroplasty after approximately 10 years of follow-up: a meta-analysis

First author Young-Hoo Kim Steven T. Woolson B. G. Pijls N. Poirier M. P. Abdel A. J. Powell
Publication year 2009 2011 2012 2015 2018 2018
Country South Korea USA Netherlands France USA New Zealand
Number of patients in fixed/mobile group 61/61 26/23 33 31/30 61/53 72
Number of male patients in fixed/mobile group 16 5/3 13/14
Number of knees in fixed/mobile group 122/122 30/31 21/21 31/30 66/53 46/39
Mean age in fixed/mobile group 48.3 (range 34–55) 77.9 (range 56–96)/78 (range 48–91) 66 (SD 14)/64 (SD 11) 72 (SD 6)/70 (SD 6)
Mean BMI in fixed/mobile group 29.2/27.7 27 (SD 5.4)/27 (SD 3.1)
Posterior cruciate-retaining or not Yes No No No No Yes
Manufacturer of implants in fixed/mobile group DePuy/DePuy Zimmer/DePuy Stryker-Howmedica/Stryker-Howmedica Zimmer/Zimmer DePuy Synthes/DePuy Synthes DePuy Synthes/DePuy Synthes
Follow-up duration Mean 10.8 years (range, 10–12 years) 10 years (range 116–160 months) 10 to 12 years 9 years (SD 1.3) Median 10 years (IQR 9.2 to 10.4) 10 years
  1. SD, standard deviation; IQR, interquartile range; BMI, body mass index