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Table 1 Summary of previous simultaneous bilateral randomized controlled trials (RCTs) comparing patellar resurfacing (PR) and nonresurfacing (NPR)

From: Is the patient aware of the difference between resurfaced and nonresurfaced patella after bilateral total knee arthroplasty? A systematic review of simultaneous bilateral randomized trials

Author

Publication

year

Journal

Country

Surgery period

Study design

Number of patients [age (Y)/F:M]

Follow up (Y)

Prosthesis name (company)

Preoperative PF arthritis

Burnett et al. [30]

2007

CORR

USA

1992–1993

Simultaneous bilateral RCT

20 (78/N/P)

10

CR Miller-Galante II (Zimmer)

No difference

Enis et al. [6]

1990

CORR

US

1984–1986

Simultaneous bilateral RCT

25 (65/21:4)

3.3

Townley (DePuy)

No difference

Smith et al. [31]

2008

JBJS (Br)

Australia

1998–2002

Simultaneous bilateral RCT

16 (N/P/N/P)

N/P

Profix (Smith & Nephew)

No difference

Ha et al. [32]

2019

Int Orthop.

China

2011–2012

Simultaneous bilateral RCT

60 (65/22:38)

5

Scorpio NRG (Stryker)

No difference

Koh et al. [15]

2019

KSSTA

South Korea

2012–2013

Simultaneous bilateral RCT

49 (70/48:1)

5

Lospa PS (Corentec)

No difference

Dong et al. [33])

2018

JOA

China

2013–2015

Simultaneous bilateral RCT

53 (68/30:23)

2.8

Genesis II PS (Smith & Nephew)

No difference

  1. USA United States, N/P not presented, F female, M male, Y years, CORR Clinical Orthopaedics and Related Research, JBJS Journal of Bone and Joint Surgery, Br British, Singapore Med J. Singapore Medical Journal, KSSTA Knee Surgery, Sports Traumatology, Arthroscopy, JOA Journal of Arthroplasty