Abstract
Purpose
This study examined the association between the pre-operative body mass index (BMI) and the post total hip replacement arthroplasty result, as well as postoperative change in the life quality of patients diagnosed with femur head avascular necrosis (AVN).
Materials and Methods
Patients diagnosed with femur head AVN undergoing total hiparthroplasty (THA) with a ceramic-ceramic articular surface from March 2005 to May 2011 were analyzed retrospectively. The Harris hip score (HHS), 36-item short-form health survey (SF-36) score, radiological examination, and complications at two years or longer after THA in the 4 groups were analyzed in terms of the BMI (underweight group, normal weight group, overweight group, and obesity group).
Results
The normal body weight group showed the best result(94.36±7.51) in all scores but the difference was not significant. In the SF-36 physical scores, obese group showed the greatest improvement. Complications occurred frequently in the underweight(50%) and obese groups(19.5%). In particular, periprosthetic fractures (P=0.002) and pneumonia (P=0.005) occurred frequently in the underweight group.
Figures and Tables
Table 1
Demographic and Clinical Characteristics of the Patients
![hp-25-182-i001](/upload/SynapseData/ArticleImage/1147hp/hp-25-182-i001.jpg)
Data are mean (standard deviation), and categorical variables as frequencies (percentages).
For continuous data, the Oneway Analysis of Variance was used, and Pearson chi-square test was employed to compare the categorical ordinal data.
BMI: body mass index, AVN: avascular necrosis, HHS: Harris hip score, SF-36: 36-item short-form health survey, PCS: physical component summary, MCS: mental component summary.
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