Table I:

Inclusion and exclusion criteria

Category	Included	Excluded
Date	January 1st, 1970 - present day
Exposure of Interest	All patients included in this study must have undergone a total knee arthroplasty (TKA) and as a result developed an arterial vascular complication within one year post-operatively
Geographic location of study	All countries will be included
Language	English
Participants	Patients of all ages will be included in this study.
Peer-review	All articles included must be peer-reviewed	Unpublished literature will be excluded
Reported outcomes	Each study must report one or more of the following outcomes to be included amongst the analysis: Vascular assessment performed pre-operatively Vascular assessment performed post-operatively Time takes to diagnose complication Type of vascular complication Imaging modality used to diagnose the complication Treatment of vascular complication
Setting Study Design	All patients must have received a TKA in a hospital setting Only studies in which 10 or more TKA are to be included	Case reports and case series with less than 10 reported TKA must be excluded
Type of Publication	Only include original published studies	Exclude all reviews, editorials, letters, and case reports