In this assignment we are going to critically appraise the article by Ackerman and Osborne in which the relationship between obesity and the diseases related to knee and hip joint is established.
Problem with knee and hip joint is now a day very common among the aged persons in our society (Medeiros, Araújo & Araújo, 2013). According to a survey carried out by the Government of Australia in the year 2011- 2012, around 3.3 million Australians are suffering from some kind of arthritis. Among them around 55.9% people are suffering from OA or osteoarthritis (Health.vic.gov.au, 2015). It has also been reported that the knee and hip joint diseases have more prevalence in women rather than men (Aihw.gov.au, 2015). Along with this with the advancement in technology, more and more people are leading a sedentary lifestyle, which increases the number of people affected by obesity. According to a study carried out by the government of Australia (2015), around 61% population of Australia are suffering from obesity or with the problem of overweight. It has been found that obesity increases the pressure on the joints which in case of aged persons is a serious problem as with the aging, the bone density decreases and risk of getting joint diseases increases (Hsu, Chou & Woollacott, 2012).
Studies have been carried out to relate hip OA and obesity and knee OA and obesity separately, but the studies carried out by the authors relating the obesity and hip and knee joint problems is the first of its kind in Australia.
In this part the article is critically appraised. Here we are going to discuss the aim of the study, methods used by the authors, the results and the interpretation of the result as well as the strength and weaknesses of the study.
The aim set by the authors include-
• Evaluating the relationship between the occurrence of the knee and hip diseases such as arthritis and osteoarthritis and obesity in the population of Australia.
• To determine whether obesity increases the severity of the joint related diseases i.e. increased pain, stiffness and decrease in HRQoL and the physical activity.
For carrying out the research, the authors collected the data based on national cross sectional survey. The authors randomly selected 10000 individuals, aged above 39 years, based on the survey from almost all territories and states of Australia. Questionnaires were mailed to the selected persons along with proper introductory letters. The questionnaire consisted of three instruments:
• Assessment of Quality of Life Instrument or AQoL. This instrument was used to evaluate the psychological well being, social relationships, independent living and physical senses of the selected individuals (Richardson et al., 2012).
• The Hip and Knee MAPT also known as Hip and Knee Multi- Attribute Prioritisation tool which indicates the severity of the joint diseases. The result of the MAPT was obtained as scores.
• The Western Ontario and McMaster Universities Osteoarthritis Index or WOMAC Index. This instrument was used to indicate the health condition related to a specific disease in this case the joint related diseases (Ackerman, 2009). The results were given as scores.