Obesity has no effect on outcomes following unicompartmental knee arthroplasty

• Verfasst von: Plate, Johannes [VerfasserIn]
• Verfasst von: Augart, Marco A. [VerfasserIn]
• Verfasst von: Akbar, Michael [VerfasserIn]
• Titel: Obesity has no effect on outcomes following unicompartmental knee arthroplasty
• Verf.angabe: Johannes F. Plate, Marco A. Augart, Thorsten M. Seyler, Daniel N. Bracey, Aneitra Hoggard, Michael Akbar, Riyaz H. Jinnah, Gary G. Poehling
• Jahr des Originals: 2015
• Umfang: 7 S.
• Fussnoten: First published 12 April 2015 ; Gesehen am 05.06.2018
• Titel Quelle: Enthalten in: Knee surgery, sports traumatology, arthroscopy
• Jahr Quelle: 2017
• Band/Heft Quelle: 25(2017), 3, S. 645-651
• ISSN Quelle: 1433-7347
• DOI: doi:10.1007/s00167-015-3597-5
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1576017788

Abstract

PurposeAlthough obesity has historically been described as a contraindication to UKA, improved outcomes with modern UKA implant designs have challenged this perception. The purpose of this study was to assess the influence of obesity on the outcomes of UKA with a robotic-assisted system at a minimum follow-up of 24 months with the hypothesis that obesity has no effect on robotic-assisted UKA outcomes.MethodsThere were 746 medial robotic-assisted UKAs (672 patients) with a mean age of 64 years (SD 11) and a mean follow-up time of 34.6 months (SD 7.8). Mean overall body mass index (BMI) was 32.1 kg/m2 (SD 6.5), and patients were stratified into seven weight categories according to the World Health Organization classification.ResultsPatient BMI did not influence the rate of revision surgery to TKA (5.8 %) or conversion from InLay to OnLay design (1.7 %, n.s.). Mean postoperative Oxford knee score was 37 (SD 11) without correlation with BMI (n.s.). The type of prosthesis (InLay/OnLay) regardless of BMI had no influence on revision rate (n.s.). BMI did not influence 90-day readmissions (4.4 %, n.s.), but showed significant correlation with higher opioid medication requirements and a higher number of physical therapy session needed to reach discharge goals (p = 0.031).ConclusionThese findings suggest that BMI does not influence clinical outcomes and readmission rates of robotic-assisted UKA at mid-term. The classic contraindication of BMI >30 kg/m2 may not be justified with the use of modern UKA designs or techniques.Level of evidenceIV.