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Table 1 The detailed baseline characteristics and general intervention information

From: Infrapatellar fat pad resection or preservation during total knee arthroplasty: a meta-analysis of randomized controlled trials

Study Infrapatellar fat pad resection/infrapatellar fat pad preservation
TKAs Patients Age (years) Female gender (%) Primary indication for TKA Mean follow-up time Primary outcome Prothesis Patellar resurfacing
Lemon et al. [1] 35/38 35/38 73.8/71.5 65.7/65.8 Osteoarthritis 3 year (1) Patellar tendon length Uncemented prosthesis (Profix, Smith and Nephew, Memphis, TN, USA) No
Pinsornsak et al. [9] 36/41 36/41 67.1/68.2 97.2/90.2 Osteoarthritis and rheumatoid arthritis 1 year (1) Rate of anterior knee pain NA NA
Maculé et al. [10] 34/34 34/34 NA NA Osteoarthritis 6 month (1) Patellar tendon length,(2) rate of anterior knee pain CR (Profix®, Smith and Nephew, Memphis, USA) and (Scorpio®, Stryker, Mahwah, USA) No
Tanaka et al. [15] 54/53 40/40 54.4/53.7 72.5/77.5 rheumatoid arthritis 3 year (1) Rate of anterior knee pain,(2) range of motion,(3) patellar tendon length difference NA Yes
Li et al. [16] 38/38 38/38 65.25/65.16 60.5/63.2 Osteoarthritis 1 year (1) Range of motion,(2) Insall-Salvati ratio (ISR), (3) blood loss,(4) operation time NA NA
Xin et al. [17] 33/33 33/33 70.12 NA Osteoarthritis 1 year (1) Insall-Salvati ratio (ISR), (2) patellar tendon length PS No
Li et al. [18] 51/53 39/39 67/68 66.7/71.8 Osteoarthritis 6 month (1) Range of motion,(2) rate of anterior knee pain,(3) blood loss,(4) operation time,(5) patellar tendon length NA No
Zhou et al. [19] 59/59 110 68/67.6 71.2/64.4 Osteoarthritis 1 year (1) Insall-Salvati ratio (ISR), (2) KSS Genesis II⁃PS (Smith and Nephew) No
Liu et al. [20] 48/46 48/46 62.9/61.83 85.4/80.4 Osteoarthritis 1 year (1) Range of motion,(2) KSS(3), patellar tendon length NA No
  1. The detailed baseline characteristics information including the number of TKAs, age, gender, primary indication of TKA, mean follow-up time, primary outcome, prothesis, and patellar resurfacing of two groups