Abstract
The clinical and radiographic results of 174 female and 86 male Innex (Zimmer, Warsaw, Indiana) mobile bearing total knee arthroplasty systems (245 patients) were evaluated, with particular emphasis on gender-related differences at five-year follow-up. Pre-operative Knee Society (KS) function and total scores were lower in women than in men. All KS scores showed a significant improvement at follow-up, but women still obtained lower KS function scores than men. Self-reported function was significantly better for male knees. No gender differences were observed for component alignment, while the occurrence of radiolucent lines, endosteal cavitations, and wear was significantly greater in male knees. Male Innex mobile bearing knees exhibited better clinical function and satisfaction than their female peers at five-year follow-up, despite inferior radiographic findings and higher revision rates.
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References
Anderson JG, Wixson RL, Tsai D et al (1996) Functional outcome and patient satisfaction in total knee patients over the age of 75. J Arthroplasty 11:831–840
Asif S, Choon DSK (2005) Midterm results of cemented press fit condylar Sigma total knee arthroplasty system. J Orthop Surg 13:280–284
Australian Orthopaedic Association Joint Replacement Registry (2007) 2007 annual report. Available at: http://www.dmac.adelaide.edu.au/aoanjrr/. Accessed 8 September 2009
Bauman S, Williams D, Petruccelli D et al (2007) Physical activity after total joint replacement: a cross-sectional survey. Clin J Sports Med 17:104–108
Chana R, Shenava Y, Nicholl AP et al (2008) Five- to 8-year results of the uncemented Duracon total knee arthoplasty system. J Arthroplasty 23:677–682
Edwald FC (1989) The knee society total knee arthroplasty roentgenographic evaluation and scoring system. Clin Orthop Relat Res 248:9–12
Greene KA (2007) Gender-specific design in total knee arthroplasty. J Arthroplasty 22:27–31
Gyssler BG (2004) Developing a mobile bearing knee prosthesis. In: Munzinger UK, Boldt J, Keblish P (eds) Primary knee arthroplasty. Springer, Berlin, pp 18–24
Hawker G, Wright J, Coyte P et al (1998) Health-related quality of life after knee replacement. J Bone Joint Surg Am 80:163–173
Hawker GA, Wright JG, Coyte PC et al (2000) Differences between men and women in the rate of use of hip and knee arthroplasty. N Engl J Med 342:1016–1022
Harrysson OLA, Robertsson O, Nayfesh JF (2004) Higher cumulative revision rate of knee arthroplasties in younger patients with osteoarthritis? Clin Orthop Relat Res 421:162–168
Heck DA, Robinson RL, Partridge CM et al (1998) Patient outcomes after knee replacement. Clin Orthop Relat Res 356:93–110
Horwitz MD, Awan S, Chatoo MB et al (2009) An 8- to 10-year review of the Rotaglide total knee replacement. Int Orthop 33:111–115
Huck SW (2004) Reading statistics and research. Pearson Education, Boston
Hudd A, Kunasingam K, Ricketts D et al (2009) A 5 to 8 year follow-up study of the Rotaglide mobile bearing total knee arthroplasty. Int Orthop 33:675–678
Indelli PF, Aglietti P, Buzzi R et al (2002) The Insall-Burstein II prosthesis. A 5- to 9-year follow-up study in osteoarthritic knees. J Arthroplasty 17:544–549
Insall JN, Dorr LD, Scott RD et al (1989) (1989) Rationale of the knee society clinical rating system. Clin Orthop Relat Res 248:13–14
Institute for Evaluative Researchin Orthopaedic Surgery (IEFO) (2005) International documentation and evaluation system forms. Available at: http://www.siris-implant.ch/index.php?id=86&L=2. Accessed 8 September 2009
Karlson EW, Daltroy LH, Liang MH et al (1997) Gender differences in patient preference may underlie differential utilization of elective surgery. Am J Med 102:524–530
Lim JTK, Luscombe KL, Jones PW et al (2006) The effect of pre-operative symptom severity on functional outcome of total knee replacement-patients with the lowest pre-operative scores achieve the lowest marks. Knee 13:216–219
MacDonald SJ, Charron KD, Bourne RB et al (2008) Gender-specific total knee replacement. Prospectively collected clinical outcomes. Clin Orthop Relat Res 466:2612–2616
Paterson D (1993) International documentation and evaluation system. Clin Orthop Relat Res 290:306–307
Rand JA, Illstrup DM (1991) Survivorship analysis of total knee arthroplasty. Cumulative rates of survival of 9200 total knee arthroplasties. J Bone J Surg Am 73:397–409
Ritter MA, Wing JT, Berend ME et al (2008) The clinical effect of gender on outcome of total knee arthroplasty. J Arthroplasty 23:331–336
Robertsson O, Dunbar M, Pehrsson T et al (2000) Patient satisfaction after knee arthroplasty. A report on 27372 knees operated on between 1981 and 1995 in Sweden. Acta Orthop Scand 71:262–267
Robinson RP (2005) Five-year follow-up of primary Optetrak posterior stabilized total knee arthroplasties in osteoarthritis. J Arthroplasty 20:927–931
Röder C, Eggli S, EL-Kerdi A et al (2003) The international documentation and evaluation system (IDES)—10-years experience. Int Orthop 27:259–261
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We are grateful to Ms. Kirsten Dobson for the English revision of this manuscript. The Schulthess Clinic received royalties from Zimmer in partial support of this study.
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Munzinger, U.K., Maffiuletti, N.A., Guggi, T. et al. Five-year results of the Innex total knee arthroplasty system. International Orthopaedics (SICOT) 34, 1159–1165 (2010). https://doi.org/10.1007/s00264-009-0887-x
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DOI: https://doi.org/10.1007/s00264-009-0887-x