Table 1 Strategies used in pubmed search

6

#3 and #4 and #5

182

5

(“resurfac*” or “patella* resurfac*” or “patellofemoral resurfac*” or “patello-femoral resurfac*” or “patellofemoral joint resurfac* “ or “patellofemoral joint replacement” or “patello-femoral joint resurfac*” or “patello-femoral joint replacement” or “patello-femoral arthroplasty” or “patellofemoral arthroplasty”)

7,963

4

(“native patell*” or “non-resurfac*” or “nonresurfac*” or “non resurfac*” or “non-resurfac*” or “nonresurfac*” or “patella* nonresurfac*” or “patella* non-resurfac*” or “patella* non resurfac*” or “patellofemoral nonresurfac*” or “patellofemoral non-resurfac*” or “patellofemoral non resurfac*” or “patellofemoral joint nonresurfac*” or “patellofemoral joint non-resurfac*” or “patellofemoral joint non resurfac*”)

244

3

#1 or #2

43,895

2

“Arthroplasty, Replacement, Knee” [MeSH]

27,414

1

(“total knee replacement arthroplasty” or “total knee replacement” or “total knee prosthesis” or “total knee prostheses” or “total knee joint replacement” or “total knee arthroplasty” or “total arthroplasty” or “knee replacement” or “total knee replacement*” or TKR or “total knee arthroplast*” or TKA or “total knee prosthes*” or “knee prosthes*” OR “knee arthroplast*”)

43,895