Assessment of the obese patient for total knee arthroplasty
Research type
Research Study
Full title
Assessment of the obese patient for total knee arthroplasty using the knee mass index
IRAS ID
195279
Contact name
Michael Brown
Contact email
Sponsor organisation
NHS Greater Glasgow and Clyde Research and Development office
Duration of Study in the UK
0 years, 5 months, 1 days
Research summary
Obese patients undergoing total knee arthoplasty (TKA) have been shown to have an increased risk of complications and also poorer functional outcomes when compared to non-obese patients. Assessment of whether or not a patient is "too large" to undergo total knee replacement is based largely around their body mass index. Some patients with a high body mass index are denied surgery due to the risks of unfavourable results.
Body mass index takes into account patient weight and height but some patients who are heavy can have thin legs making surgery less troublesome and vice versa.
Our hypothesis is that a new method of assessment which takes into account knee size and total body weight would show better correlation with patient reported outcome measures and lower complication rates. This would allow better patient selection for TKA.
All patients who have undergone Total knee arthroplasty at our institution (Glasgow Royal Infirmary) would be eligible for inclusion. Patients who required revision surgery within 1 year would be excluded.
The research would be conducted using patient records at an arthroplasty clinic at Glasgow royal infirmary. Xrays would be used to make assessment of limb size. Weight and patient reported outcome scores would be taken from casenotes. This will be a retrospective study and participants will only be contacted to provide consent.REC name
South Central - Hampshire B Research Ethics Committee
REC reference
16/SC/0177
Date of REC Opinion
4 Apr 2016
REC opinion
Favourable Opinion