Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
Perner, S.
Influence of BMI on clinical outcome after implantation of ACS® knee arthroplasty with metal-backed patella resurfacing
Humanmedizin; [ Diplomarbeit ] Medizinische Universität Graz; 2023. pp. 74
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- Autor*innen der Med Uni Graz:
- Betreuer*innen:
- Sadoghi Patrick
- Wittig Ulrike
- Altmetrics:
- Abstract:
- Background The rising number of obese patients is associated with an increase in patients receiving total knee arthroplasty (TKA). However, the debate about the clinical outcome of TKA in obese patients remains controversial since studies conducted in this field have arrived at different conclusions. This retrospective study aims to evaluate the clinical outcome of TKA patients in relation to their BMI. Methods A pre-existing dataset of patients who received primary TKA with an ACS® implant with metal-backed patella resurfacing at Bad Radkersburg State Hospital was used. In order to evaluate the clinical outcome following TKA, a variety of scores (Tegner, WOMAC, KSS-knee, KSS-function, PCS-12, MCS-12, ROM, VAS) was applied. Additionally, potential revisions were documented. The mean follow-up was 10.1 years. We divided patients into 3 groups (non-obese [BMI less than 30 kg/m²], obese [BMI of 30 to 39.9 kg/m²], and morbidly obese [BMI higher than 40 kg/m²]). Results 49.7 % (n = 193) of 388 implants in 356 included patients were non-obese, whereas 44.9 % (n = 174) were obese and 5.4 % (n = 21) were morbidly obese. There was no significant difference between the groups regarding both the scores and the revision rate. Conclusion In this study, no significant difference regarding knee function, pain, and revision rate after primary TKA with an ACS® implant with metal-backed patella resurfacing was shown by means of various well-established knee scores in relation to the BMI. Therefore, a BMI limit for performing TKA cannot be supported, as it has no impact on the result. However, it should be noted that despite the high number of (included) patients, the group sizes are heterogeneous with a rather low number of patients in the morbidly obese group, making the comparison to the morbidly obese group potentially less valid.