Osteochondritis dissecans (OCD) occurs in joints where cartilage loosens at the end of a bone. OCD of the knee has been the only study that conducted an independent population performed by Linden of Malmo, Sweden (Kessler, J. I., Nikizad, H., Shea, K. G., Jacobs, J. C., Bebchuk, J. D., & Weiss, J. M., 2014). The limitations of this study had patients ranging in ages with less than 300,000 patients, and it took place in 1888. The new guidelines enforced that OCD should have more research involving the prominence of improved epidemiology on OCD. The purpose of the new study over OCD will evaluate the demographics and epidemiology of OCD of the knee in Southern California.
In this study, the scientist performed a cross-sectional study, which is an observational study that involves data collection from a population. The patients included ages from 2 to 19 years old making this study a tremendously large population of children and adolescents. The patients pooled from the Kaiser Permanente Southern California, which is an integrated health care system. Kaiser Permanente obliges to different races, their ethnicity, and their socioeconomic. This comes with a diverse population of over 3.5 million people to review their records of OCD of the knee.
One way to identify if the patient has OCD is to use ICD-9 codes. This helps to establish if the patient should be run through a natural language processing word search to see if the words osteochondritis, dissecans, or OCD displays in their paperwork. When they completed the word search, the study had 961 patients fitting the criteria. In order to find out who actually had OCD, the scientists had to look at the radiographs to ensure these patients indeed had OCD.
Finally, the study had found 192 people that certainly had OCD and met the age range. The first category of the ages would be in smaller groups such as 2 to 5, 6 to 11, or 12 to 19 years old. In addition, they classified race and ethnicity as non-Hispanic white, Hispanic, non-Hispanic black, Asian or Pacific Islander, and other. Age group, sex, and ethnicity calculated the study by looking at the frequency of involvement of OCD of the knee and the location within the knee joint (Kessler, J. I., Nikizad, H., Shea, K. G., Jacobs, J. C., Bebchuk, J. D., & Weiss, J. M., 2014).
The calculated data for the study took from January 2007 until August 2011. However, the incidence of OCD was only calculated for the year 2010. Kaiser Foundation Hospitals did not make a decision on the changes to an electronic database, limiting the access of the files of the patients up until the end of 2009 (Kessler, J. I., Nikizad, H., Shea, K. G., Jacobs, J. C., Bebchuk, J. D., & Weiss, J. M., 2014). Therefore, the year of 2010 was the only year of accurate calculation and data of OCD of the knee, along with the age group, sex, and race/ethnicity while the years of 2007 to 2009 or 2011 delivered inaccurate OCD incidence data.
According to The American Journal of Sports...