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Published in: Knee Surgery, Sports Traumatology, Arthroscopy 3/2014

01-03-2014 | Knee

Posterior cruciate-retaining versus posterior stabilized total knee arthroplasty: a meta-analysis of randomized controlled trials

Authors: Ning Li, Yang Tan, Yu Deng, Liaobin Chen

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 3/2014

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Abstract

Purpose

To compare the outcomes between posterior cruciate-retaining and posterior stabilized total knee arthroplasty (TKA) in order to evaluate which approach is superior.

Methods

Randomized controlled trials (RCTs) comparing posterior cruciate-retaining with posterior stabilized TKA were reviewed which were published up to August 2011. Methodological quality of each included RCT was assessed using the Physiotherapy Evidence Database (PEDro) scale. The relevant data were analysed using Review Manager 5.1. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach was used to determine the quality of the evidence.

Results

Eight RCTs involving 888 patients with 963 knee joints met predetermined inclusion criteria. The postoperative range of motion (ROM) and flexion angle were 11.07° and 2.88° higher for patients with a posterior stabilized TKA than those with a posterior cruciate-retaining TKA, respectively [weighted mean difference (WMD), −11.07; 95 % confidence interval (CI), −18.06 to −4.08; p < 0.01 and WMD, −2.88; 95 % CI, −5.63 to −0.12; p = 0.04]. No statistical differences were observed between the two designs for knee society pain score, extension angle, 2- and 5-year knee society score, 2- and 5-year knee society function score and complications after primary TKA.

Conclusion

Posterior cruciate-retaining and posterior stabilized TKA have similar clinical outcomes with regard to knee function, postoperative knee pain and the other complications. Prosthesis survivorship for both posterior cruciate-retaining and posterior stabilized TKA is satisfactory, and there are no differences between them at short- and middle-term follow-up.

Level of evidence

II.
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Metadata
Title
Posterior cruciate-retaining versus posterior stabilized total knee arthroplasty: a meta-analysis of randomized controlled trials
Authors
Ning Li
Yang Tan
Yu Deng
Liaobin Chen
Publication date
01-03-2014
Publisher
Springer Berlin Heidelberg
Published in
Knee Surgery, Sports Traumatology, Arthroscopy / Issue 3/2014
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI
https://doi.org/10.1007/s00167-012-2275-0

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