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Table 1 Search strategy

From: Combining tibial tubercle osteotomy with medial patellofemoral ligament reconstruction often yields better outcomes in treating patellofemoral instability: a systematic review and meta-analysis of case-control studies

1

exp medial patellofemoral ligament/ or exp MPFL/

2

medial patellofemoral ligament reconstruction.mp or MPFLR.mp

3

1 or 2

4

exp tibia/ or exp tibial/

5

exp tubercle/ or exp tuberosity/

6

exp osteotomy/ or exp transfer/

7

(and/4–6) or exp TTO/ or exp TTT/

8

exp prognosis/

9

(3 and 7) or (7 and 8)

  1. Note The position of “exp” in the search formulas of different databases is not completely the same, but all indicate expanded search; “mp” indicates maximum precision search. The exclusion criteria have been limited through the filtering systems of each database during search process