Association of Obesity, Parity, and History of Knee Injury with Knee Osteoarthritis in Female
Abstract: Osteoarthritis is
the most joint disorder among elderly. There are a lot of risk factors of knee
osteoarthritis. Obesity and high frequent of parity can increase the load on
knee joint. Knee injury also decreases the stability of knee joint on bearing
body load. This study was conducted to observe the association of obesity,
parity ≥3 times and history of knee injury with the occurrence of knee osteoarthritis in female aged >50 years
old.
Methods: Case control design was chosen in this study. Female patients
with age >50 years were recruited by consecutive sampling from rheumatology
clinic at Dr. Hasan Sadikin General Hospital Bandung. Data were collected from
August to September 2013. Minimal sample size was 60 samples calculated by rule
of thumb formula. Obesity was measured by body mass index (BMI). Parity and
history of knee injury were assessed by questionnaire. Those variables were
analyzed by logistic regression method.
Result: Obesity did not associate with knee osteoarthritis in this study,
p=0.549 (odd ratio (OR) 1.32, 95% confidence interval (CI) 0.52–3.32). Parity
was associated with knee osteoarthritis in this study p=0.001 (OR 4.7, 95% CI
1.89–11.68). History of knee injury was associated with knee osteoarthritis in
this study, p=0.001 (OR 6.19, 95% CI 2.01–18.99).
Conclusions: Parity ≥3 times and history of knee injury were associated
with the occurrence of knee osteoarthritis. Obesity was not associated with the
occurrence of knee osteoarthritis.
Author: Ade Triyadi, Riardi
Pramudiyo, Januarsih Iwan A. R.
Journal Code: jpkedokterangg150310
