BEBAN BIOMEKANIK SEBAGAI FAKTOR RISIKO TERJADINYA OSTEOARTRITIS LUTUT (Studi kasus di Poli Reumatik RSUP Dr. Kariadi Semarang)

Abstract

Background: One of knee osteoarthritis (OA)'s risk factors is biomechanic load. Biomechanic load as a risk factor has been explained. A study reported that mechanic increased the risk of knee OA. The aim of this study was examining the relationship between biomechanic load and the risk of knee OA in patients of Rheumatologic Department Kariadi Hospital Semarang. Methods: An observational analytic study with case control design compared 35 cases with knee OA (clinically and radiographically diagnosed as knee OA based on Altmann 1991 criteria) with 35 control group, matched for age and gender. Biomechanic load restrictions are weight of load (Kg), frequency of working with heavy load (times/day), duration of working with heavy load (years), geographical condition of working with heavy load (hilly or plain area). The data were collected using questionnaires. Epi info 6 & SPSS for Windows Release 13.0 were used for statistical analysis. Chi Square were used for nominal data. Odds Ratio (OR) were used to decide the risk factors. Results: The OR of biomechanic was 3.33 (95% CI=0.86-18.85) with p=0.096. The OR of working with standing was 2.25 (95% CI=0.63-10.00) with p=0.267. The OR of knee trauma was 3.00 (95% CI=0.75-17.23) with p=0.149. The OR of working with cycling was 2.00 (95% CI=0.62-7.46) with p=0.302. The OR of working with walking was 1.00 (95% CI= 0.30-3.34) with p=0.789. Conclusion: There were no significant differences between cases and control for the risk factors of working with biomechanic load, working with standing, knee trauma history, working with cycling and working with walking