Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (36): 5897-5904.doi: 10.12307/2021.360

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Efficacy of posterior cruciate ligament retaining versus posterior stabilized prostheses in total knee arthroplasty: a systematic review and a meta-analysis

Wan Dadi1,2, Duan Xiangrui1,2, Fan Xinchao1,3, Yuan Ye1,3, Huang Teng1, Pan Dikang2, Liu Jingyan2, Li Xicheng1   

  1. 1Department of Orthopedics, Hebei General Hospital, Shijiazhuang 050051, Hebei Province, China; 2Graduate School of North China University of Science and Technology, Tangshan 063210, Hebei Province, China; 3Hebei North University, Zhangjiakou 075000, Hebei Province, China
  • Received:2021-03-22 Revised:2021-03-24 Accepted:2021-04-12 Online:2021-12-28 Published:2021-09-18
  • Contact: Li Xicheng, MD, Chief physician, Department of Orthopedics, Hebei General Hospital, Shijiazhuang 050051, Hebei Province, China
  • About author:Wan Dadi, Master candidate, Department of Orthopedics, Hebei General Hospital, Shijiazhuang 050051, Hebei Province, China; Graduate School of North China University of Science and Technology, Tangshan 063210, Hebei Province, China

Abstract: BACKGROUND: When performing total knee arthroplasty, one is faced with the choice of posterior cruciate ligament retaining prosthesis or posterior stabilized prosthesis. However, which prosthesis is more advantageous cannot be completely determined.  
OBJECTIVE: To investigate the safety and efficacy of posterior cruciate ligament retaining prosthesis and posterior stabilized prosthesis in total knee arthroplasty.  
METHODS: Databases, including Cochrane Library, PubMed, Web of Science, EMbase, CNKI, Wanfang, VIP and CBM, were searched for clinical studies on posterior cruciate ligament retaining and posterior stabilized for total knee arthroplasty. The risk of bias in randomized controlled trials was assessed using the Cochrane Risk of Bias Assessment Tool. The quality of literature in retrospective case-control studies was assessed using the Newcastle-Ottawa Scale. RevMan 5.3 software was used for meta-analysis. 
RESULTS: A total of 11 studies (seven randomized controlled trials and four retrospective case-control trials were of high quality) were included, including 765 patients undergoing total knee arthroplasty, including 386 posterior cruciate ligament retaining prostheses and 379 posterior stabilized prostheses. The results of the meta-analysis showed that the range of motion of knee joint was larger one year after the posterior stabilized prosthesis (WMD=-0.94, 95%CI:-1.69 to -0.20, P=0.01]; the angle of knee joint extension was smaller one year after surgery (WMD=-0.33, 95%CI:-0.61 to -0.05, P=0.02], and the angle of flexion was larger one year after surgery (SMD=-0.62, 95%CI:-1.20 to -0.04, P=0.03]. (2) The total postoperative blood loss of posterior cruciate ligament retaining prosthesis was less than posterior stabilized prosthesis (WMD=-126.86, 95%CI:-231.03 to -22.69, P=0.02]. WOMAC score was lower for posterior cruciate ligament retaining prosthesis 1 year after surgery (SMD=-0.29, 95%CI:-0.55 to -0.04, P=0.02]. The operative time of posterior cruciate ligament retaining prosthesis was longer than posterior stabilized prosthesis (WMD=4.29, 95%CI:2.13-6.46, P=0.0001]. (3) Postoperative three months HSS score, postoperative 1 year AKS clinical scoring, and postoperative complications were not statistically significant between the two groups (P > 0.05).  
CONCLUSION: In total knee arthroplasty, posterior stabilized prosthesis was better than posterior cruciate ligament retaining prosthesis in the range of knee motion and operative time. Total blood loss was less and the recovery of knee function was better in posterior cruciate ligament retaining prosthesis than those in the posterior stabilized prosthesis. Each type of prosthesis has its own advantages, and the surgeon can choose according to individual differences for the patient.

Key words: bone, knee joint, Replacement, posterior cruciate ligament retaining prosthesis, posterior stabilized prosthesis, total blood loss, randomized controlled trial, meta-analysis

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