Men versus women: does size matter in total knee arthroplasty?

Clinical Orthopaedics and Related Research
Roger H Emerson, Jessica Martinez

Abstract

The role played by femoral component sizing in the clinical outcome of primary TKA is currently debated. Oversizing the femur in patients with smaller knees could lead to overstuffing the knee capsule with resulting pain and reduced range of motion. We asked whether the distribution of femoral component sizes differed between genders and whether the availability of additional sizes benefited genders differently and led to a measurable improvement in knee flexion and Knee Society scores or pain. We retrospectively examined two groups of consecutive knees of patients who underwent primary TKA using similar techniques and constraint: Group 1 (93 men and 90 women) who had available four original sizes and Group 2 (106 men and 106 women) after the introduction of three new smaller sizes. More than twice as many new smaller sizes were used in women (52.3%, 56 of 106) compared to men (17.9%, 19 of 106). At the scheduled 6-month followup visit (average, 6 months; range, 5-7 months), we found no differences in the knee score, pain score, and knee flexion in men and women before the additional sizes (Group 1) and after the new sizes (Group 2). Additional sizes therefore did not appear to influence short-term outcomes. Level III, therapeu...Continue Reading

References

Nov 1, 1989·The Journal of Bone and Joint Surgery. British Volume·G R ScuderiM C Moran
Jul 7, 2000·The Journal of Arthroplasty·R H EmersonW C Head
Jan 6, 2001·Acta Orthopaedica Scandinavica·R Y LiowC M Lennox
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Oct 19, 2005·The Journal of Arthroplasty·Akihiro KotaniRobert B Bourne
Sep 29, 2006·Orthopedics·Robert E Booth

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Citations

Feb 14, 2013·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Michel P BonninEmmanuelle Dantony
Oct 5, 2010·Journal of Biomechanical Engineering·Jonathan J ElsnerEran Linder-Ganz
Jan 26, 2011·Clinical Orthopaedics and Related Research·Aaron J JohnsonMichael A Mont
Jul 25, 2009·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Fu Bo ChengYou Qiong Li
Dec 25, 2008·Expert Review of Medical Devices·Mike S McGrathMichael A Mont
Aug 28, 2014·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Masataka NishikawaTakeshi Fuji
Mar 2, 2011·The Journal of Bone and Joint Surgery. British Volume·R J GillespieD R Cooperman
Nov 3, 2010·The Knee·Aree TanavaleeSrihatach Ngarmukos
Feb 15, 2011·The Journal of Arthroplasty·Pak Lin ChinNgai Nung Lo

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