Effect of pre-surgical factors against degenerative lumbal patient surgical actions: evaluation using modified oswestry disability index and rolland morris

Background: Lower back pain is the most common complaint in humans in their lives with a variety of heterogeneous substances that vary in their epidemiological studies. Several disability scales have been developed and developed for the assessment of low back pain patients as a measure of outcome of therapy. One of the preand post-operative evaluation methods that are widely used is the Modified Oswestry Disability Index (MODI) and the Rolland Morris Disability Index. This disability scale is a disability scale that assesses daily personal and social functions using a questionnaire method and has been extensively reviewed by various study centers so that it is widely used as a guide for operative evaluation Objective: the study is aimed to knowing the effect of pre-surgical factors on surgical outcome in degenerative lumbar patients evaluated using the Modified Oswestry and Rolland Morris disability scales. Methods: The study was conducted at the Dr. Soetomo General Academic Hospital by taking data from lumbar abnormality patients who were operated on in the period of 1 June 2018 until 30 June 2019. The data is processed by calculating the Modified Oswestry Disability Index score and the Rolland Morris Disability Index during pre and post-operative, then the variables are calculated with each categorical regression to assess the effect of each variable Results: Total sample of 42 with 31 samples fulfilling the inclusion criteria. There are 19 male sex samples and 12 female sex samples. From the age variable data, obtained the most age range at the age of 40-60 years. Whereas in the variable body mass index was obtained the most in samples with a range of values of 18.5-25. The adjusted R2 (coefficient of determination) result is 0.746 for MODI and adjusted R2 (coefficient of determination) result of 0.513 for Rolland Morris Disability Scale. Conclusion: There is an effect of sex, age, sitting working position and sacral slope factors on the outcome of surgical procedures in the degenerative lumbar patient evaluated with the Modified Oswestry disability scale. Whereas the age and sitting work position have an influence in surgical outcome in the patients evaluated with Rolland Morris scale. Number of intervention levels tend to have a significant effect on disability score difference.