Affiliations: [a] Department of Orthopaedic Surgery, Annastift Hannover (Medical School Hannover, MHH), Germany | [b] Department of General Orthopaedics, Tumororthopaedics University Hospital Muenster, Germany | [c] Department of General Orthopaedics, Paracelsus Hospital Osnabrück, Germany
Correspondence:
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Corresponding author: Kiriakos Daniilidis, Department of Orthopaedic Surgery, Hanover Medical School (MHH), Anna-von-Borries-Strasse 1-7, 30625 Hannover, Germany. Tel.: +49 511/5354-0; Fax: +49 511/5354-682; E-mail:kraj@gmx.net
Abstract: INTRODUCTION: Obesity is a common problem in the western European countries. Since the
association between obesity and the emergence of gonarthrosis is approved,
it is more important to gain reliable information about this patient group.
The aim of the present retrospective study is to evaluate clinical outcomes
of German obese patients after total knee arthroplasty (TKA).
PATIENTS AND METHODS:
Between 2001 and 2009 a total of 199 patients with 230 TKA were included in
the present study. The collective was divided into four groups in relation
to their Body-Mass-Index (BMI); group 1: BMI < 25 kg/m2, n = 24;
group 2: BMI 25-30 kg/m2, n = 80, group 3: BMI 30-40 kg/m2, n
= 109; group 4: BMI> 40 kg/m2, n = 17. Clinical outcome
measurement was scored postoperatively using the knee society score (KSS),
hospital for special surgery score (HSS) and the visual analogue scale
(VAS). Furthermore complications and subjective patient satisfaction were
noted.
RESULTS:
We did not detect any significant differences in the clinical scores between
the BMI-subgroups. However we measured statistically significant worse
results in case of infection and instability in all BMI subgroups (p>
0.01).
CONCLUSION: While infection and instability may have a negative influence for the
clinical outcome, we did not detect any significant correlation between
obesity and exiting complications. Obesity has no significant correlation to
influence the outcome after TKA implantation negatively.
Keywords: Obesity, total knee arthroplasty, outcome, infection
