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				                                                                        Bjorgul K, Novicoff WN, Andersen ST, et al. High rate of revision and a high incidence of radiolucent lines around Metasul metal-on-metal total hip replacements: results from a randomised controlled trial of three bearings after seven years. Bone Joint , 2013, 95-B(7): 881-886.
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				                                                                        Willert HG, Buchhorn GH, Göbel D, et al. Wear behavior and histopathology of classic cemented metal on metal hip endoprostheses. Clin Orthop Relat Res, 1996, 329 Suppl: S160-S186.
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				                                                                        Akrawi H, Hossain FS, Niculescu S, et al. Midterm results of 36 mm metal-on-metal total hip arthroplasty. Indian J Orthop, 2016, 50(3): 256-262.
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				                                                                        Glyn-Jones S, Pandit H, Kwon YM, et al. Risk factors for inflammatory pseudotumour formation following hip resurfacing. J Bone Joint Surg (Br), 2009, 91(12): 1566-1574.
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				                                                                        Williams DH, Greidanus NV, Masri BA, et al. Prevalence of pseudotumor in asymptomatic patients after metal-on-metal hip arthroplasty. J Bone Joint Surg (Am), 2011, 93(23): 2164-2171.
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				                                                                        Hart AJ, Satchithananda K, Liddle AD, et al. Pseudotumors in association with well-functioning metal-on-metal hip prostheses: a case-control study using three-dimensional computed tomography and magnetic resonance imaging. J Bone Joint Surg (Am), 2012, 94(4): 317-325.
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				                                                                | 30. | 
				                                                                				                                                                       
				                                                                        van der Weegen W, Smolders JM, Sijbesma T, et al. High incidence of pseudotumours after hip resurfacing even in low risk patients; results from an intensified MRI screening protocol. Hip Int, 2013, 23(3): 243-249.
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				                                                                | 33. | 
				                                                                				                                                                       
				                                                                        Grammatopoulos G, Pandit H, Kwon YM, et al. Hip resurfacings revised for inflammatory pseudotumour have a poor outcome. J Bone Joint Surg (Br), 2009, 91(8): 1019-1024.
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