Effects of neuromuscular electrical stimulation after anterior cruciate ligament reconstruction on quadriceps strength, function, and patient-oriented outcomes: A systematic review

Min Kim, Ted Croy, Jay Hertel, Susan Saliba

Research output: Contribution to journalReview article

72 Scopus citations

Abstract

Study Design: Systematic Literature review. Objective: To perform a systematic review of randomized controlled trials assessing the effects of neuromuscular electrical stimulation (NMES) on quadriceps strength, functional performance, and self-reported function after anterior cruciate ligament reconstruction. Background: Conflicting evidence exists regarding the effectiveness of NMES following anterior cruciate ligament reconstruction. Methods: Searches were performed for randomized controlled trials using electronic databases from 1966 through October 2008. Methodological quality was assessed using the Physiotherapy Evidence Database Scale. Between- group effect sizes and 95% confidence intervals (CIs) were calculated. Results: Eight randomized controlled trials were included. The average Physiotherapy Evidence Database Scale score was 4 out of possible maximum 10. The effect sizes for quadriceps strength measures (isometric or isokinetic torque) from 7 studies ranged from -0.74 to 3.81 at approximately 6 weeks postoperatively; 6 of 11 comparisons were statistically significant, with strength benefits favoring NMES treatment. The effect sizes for functional performance measures from 1 study ranged from 0.07 to 0.64 at 6 weeks postoperatively; none of 3 comparisons were statistically significant, and the effect sizes for self-reported function measures from 1 study were 0.66 and 0.72 at 12 to 16 weeks postoperatively; both comparisons were statistically significant, with benefits favoring NMES treatment. Conclusion: NMES combined with exercise may be more effective in improving quadriceps strength than exercise alone, whereas its effect on functional performance and patient-oriented outcomes is inconclusive. Inconsistencies were noted in the NMES parameters and application of NMES.

Original languageEnglish (US)
Pages (from-to)383-391
Number of pages9
JournalJournal of Orthopaedic and Sports Physical Therapy
Volume40
Issue number7
DOIs
StatePublished - Jan 1 2010
Externally publishedYes

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Keywords

  • ACL
  • Electromodality
  • Postsurgical knee rehabilitation
  • Randomized clinical trials

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation

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