The Effect of Total Knee Arthroplasty on Patient’s Weight
Research type
Research Study
Full title
The Effect of Total Knee Arthroplasty on Patient’s Weight
IRAS ID
188795
Contact name
Wiqqas Jamil
Contact email
Duration of Study in the UK
1 years, 2 months, 1 days
Research summary
This is a prospective observational multicentre study. The objective of the present study is to investigate the effect of total knee arthroplasty surgery on patients’ body mass index (BMI) and whether this affects their reported outcomes.
Patients BMI will be measured prior to the planned operation, patients will be reviewed after 12 months after the operation, re-measure their BMI and obtain a patient reported outcome measure. The BMI pre and post operation will be reviewed, and relation to the patient outcome measure will be assessed.
Losing weight before total knee arthroplasty surgery is important and greatly encouraged, as it helps to reduce surgical risk and increases the longevity of the prosthesis.
However, patients generally refer to knee pain and its effect on physical activity as the explanation for not losing weight during the period preceding the surgical procedure. Within this context, there is an idea that weight loss will take place naturally after surgery, since patients will have less pain and functional limitation, and will therefore be able to participate in physical exercise more easily.
There is conflicting evidence regarding whether patients lose weight after total knee arthroplasty. A recent meta-analysis by Inacio et al. showed that the available evidence is weak and underpowered with most of the studies’ results depending on the patients’ reported weight rather than performing active weight measurement.
The objective of the present study is to investigate the effect of total knee arthroplasty surgery on patients’ BMI and whether this affects their reported outcomes.
REC name
North of Scotland Research Ethics Committee 2
REC reference
15/NS/0115
Date of REC Opinion
28 Oct 2015
REC opinion
Unfavourable Opinion