Table 1 The detailed baseline characteristics and general intervention information
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 |