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Preoperative range of motion and applications of continuous passive motion predict outcomes after knee arthroplasty in patients with arthritis

  • Chun-De Liao
  • Jau-Yih Tsauo
  • Shih-Wei Huang
  • Hung-Chou Chen
  • Yen-Shuo Chiu
  • Tsan-Hon Liou
KNEE
  • 15 Downloads

Abstract

Purpose

This study evaluated the clinical efficacy of continuous passive motion (CPM) following knee arthroplasty and determined the predictors of effect sizes of range of motion (ROM) and functional outcomes in patients with knee arthritis.

Methods

A comprehensive electronic database search was performed for randomized controlled trials (RCTs), without publication year or language restrictions. The included RCTs were analyzed through meta-analysis and risk of bias assessment. Study methodological quality (MQ) was assessed using the Physiotherapy Evidence Database (PEDro) scale. Inverse-variance weighted univariate and multivariate metaregression analyses were performed to determine the predictors of treatment outcomes.

Results

A total of 77 RCTs with PEDro scores ranging from 6/10 to 8/10 were included. Meta-analyses revealed an overall significant favorable effect of CPM on treatment success rates [odds ratio: 3.64, 95% confidence interval (CI) 2.21–6.00]. Significant immediate [postoperative day 14; standard mean difference (SMD): 1.06; 95% CI 0.61–1.51] and short-term (3-month follow-up; SMD: 0.80; 95% CI 0.45–1.15) effects on knee ROM and a long-term effect on function (12-month follow-up; SMD: 1.08; 95% CI 0.28–1.89) were observed. The preoperative ROM, postoperative day of CPM initiation, daily ROM increment, and total application days were significant independent predictors of CPM efficacy.

Conclusion

Early CPM initiation with rapid progress over a long duration of CPM application predicts higher treatment effect on knee ROM and function. The results were based on a moderate level of evidence, with good MQ and potential blinding biases in the included RCTs. An aggressive protocol of CPM has clinically relevant beneficial short-term and long-term effects on postoperative outcomes.

Level of evidence

II.

Keywords

Knee arthroplasty Arthritis Range of motion Continuous passive motion Functional outcome 

Notes

Funding

This study was funded by grants from Taipei Medical University-Shuang Ho Hospital, Ministry of Health and Welfare, Taiwan (grant no. W107HCP-04). The funding source had no role in the design, implementation, data analysis and interpretation, or reporting of the study. The contents of this publication are solely the responsibility of the authors and do not necessarily represent the official view of the funding sources.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest related to the publication of this article.

Ethical approval

This study dealt with published data only, no ethical approval has been necessary since sensitive information has not been provided or utilized in this review.

Supplementary material

167_2018_5257_MOESM1_ESM.pdf (3.4 mb)
Supplementary material 1 (PDF 3459 KB)

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Copyright information

© European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2018

Authors and Affiliations

  • Chun-De Liao
    • 1
    • 2
  • Jau-Yih Tsauo
    • 1
  • Shih-Wei Huang
    • 2
    • 3
  • Hung-Chou Chen
    • 2
    • 4
    • 5
  • Yen-Shuo Chiu
    • 6
  • Tsan-Hon Liou
    • 2
    • 5
    • 7
  1. 1.School and Graduate Institute of Physical Therapy, College of MedicineNational Taiwan UniversityTaipeiTaiwan
  2. 2.Department of Physical Medicine and Rehabilitation, Shuang Ho HospitalTaipei Medical UniversityTaipeiTaiwan
  3. 3.Graduate Institute of Sports ScienceNational Taiwan Sport UniversityTaoyuanTaiwan
  4. 4.Center for Evidence-Based Health Care, Shuang Ho HospitalTaipei Medical UniversityTaipeiTaiwan
  5. 5.Department of Physical Medicine and Rehabilitation, School of Medicine, College of MedicineTaipei Medical UniversityTaipeiTaiwan
  6. 6.Department of Orthopedics, Shuang Ho HospitalTaipei Medical UniversityTaipeiTaiwan
  7. 7.Graduate Institute of Injury Prevention and ControlTaipei Medical UniversityTaipeiTaiwan

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