Impact of loss of weight on knee arthrosis has not been thoroughly studied. The primary goal of this study is to compare the MRI parameters (aspect of cartilage and oedema of spongious sub-chondral bone) before and one year after bariatric surgery. Knee MRI is not currently part of the investigations preceding bariatric surgery.
Assessment of knee arthrosis in severely obese patients after bariatric surgery. Impact of loss of weight on knee arthrosis has not been thoroughly studied. The primary goal of this study is to compare the MRI parameters (aspect of cartilage and oedema of spongious sub-chondral bone) before and one year after bariatric surgery.
Study Type
OBSERVATIONAL
Enrollment
80
knee MRI before surgery (inclusion) and one year after
Louis Mourier hospital (AP-HP)
Colombes, France
variation of knee joint space thickness
Joint space variation in percentages (mean joint space variation calculated for each patient group). Mean joint space comparison between 2 groups of obese patients: patients with Bypass surgery versus patients without surgery.
Time frame: 24 hours, one year
proportion of patients with pain
proportion of patients with Pain Scores on the Visual Analog Scale ≥ 30/100 (for at least one knee). Comparison at one year after bariatric surgery versus inclusion.
Time frame: 1 year
prevalence of atherosis
Pain Scores on the Visual Analog Scale \>= 3 and/or radiological signs of atherosis
Time frame: 24 hours
mean pain and disability
mean Pain Scores on the Visual Analog Scale and mean value of KOOS index for knee function.
Time frame: 24 hours
evolution of KOOS score after surgery
Among the 80 patients undergoing surgery, comparison of KOOS function score before surgery versus 6 months, 1 year and two years after surgery.
Time frame: 6 months, 1 year and two years
evolution of pain scores after surgery
Among the 80 patients undergoing surgery, comparison of mean Pain Scores on the Visual Analog Scale before surgery versus 6 months, 1 year and two years after surgery.
Time frame: 6 months, 1 year, 2 years
evolution of the proportion of patients in pain
Among the 80 patients undergoing surgery, comparison of the proportion of patients with Pain Scores on the Visual Analog Scale ≥ 30/100 before surgery versus 6 months, 1 year and two years after surgery.
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Time frame: 6 months, 1 year and two years
evolution of knee MRI parameters after surgery
Among the 80 patients undergoing surgery, comparison of the MRI parameters (T2, cartilage volume, œdema of sub-chondral spongious bone) before surgery versus 6 months, 1 year and two years after surgery.
Time frame: 6 months, 1 year and two years