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BMC Musculoskeletal Disorders
Published in: BMC Musculoskeletal Disorders 1/2012

Open Access 01-12-2012 | Research article

I-ONE therapy in patients undergoing total knee arthroplasty: a prospective, randomized and controlled study

Authors: Biagio Moretti, Angela Notarnicola, Lorenzo Moretti, Stefania Setti, Francesca De Terlizzi, Vito Pesce, Vittorio Patella

Published in: BMC Musculoskeletal Disorders | Issue 1/2012

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Abstract

Background

Total knee arthroplasty (TKA) is often associated with a severe local inflammatory reaction which, unless controlled, leads to persistent pain up to one year after surgery. Standard and accelerated rehabilitation protocols are currently being implemented after TKA, but no consensus exists regarding the long-term effects. Biophysical stimulation with pulsed electromagnetic fields (PEMFs) has been demonstrated to exert an anti-inflammatory effect, to promote early functional recovery and to maintain a positive long-term effect in patients undergoing joint arthroscopy. The aim of this study was to evaluate whether PEMFs can be used to limit the pain and enhance patient recovery after TKA.

Methods

A prospective, randomized, controlled study in 30 patients undergoing TKA was conducted. Patients were randomized into experimental PEMFs or a control group. Patients in the experimental group were instructed to use I-ONE stimulator 4hours/day for 60days. Postoperatively, all patients received the same rehabilitation program. Treatment outcome was assessed using the Knee Society Score, SF-36 Health-Survey and VAS. Patients were evaluated pre-operatively and one, two, six and 12 months after TKA. Joint swelling and Non Steroidal Anti Inflammatory Drug (NSAID) consumption were recorded. Comparisons between the two groups were carried out using a two-tail heteroschedastic Student’s t-test. Analysis of variance for each individual subject during the study was performed using ANOVA for multiple comparisons, applied on each group, and a Dunnet post hoc test. A p value < 0.05 was considered statistically significant.

Results

Pre-operatively, no differences were observed between groups in terms of age, sex, weight, height, Knee-Score, VAS, SF-36 and joint swelling, with the exception of the Functional Score. The Knee-Score, SF-36 and VAS demonstrated significantly positive outcomes in the I-ONE stimulated group compared with the controls at follow-ups. In the I-ONE group, NSAID use was reduced and joint swelling resolution was more rapid than in controls. The effect of I-ONE therapy was maintained after use of the device was discontinued.

Conclusions

The results of the study show early functional recovery in the I-ONE group. I-ONE therapy should be considered after TKA to prevent the inflammatory reaction elicited by surgery, for pain relief and to speed functional recovery.

Trial registration

Current Controlled Trials ISRCTN10526056
Appendix
Available only for authorised users
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Metadata
Title
I-ONE therapy in patients undergoing total knee arthroplasty: a prospective, randomized and controlled study
Authors
Biagio Moretti
Angela Notarnicola
Lorenzo Moretti
Stefania Setti
Francesca De Terlizzi
Vito Pesce
Vittorio Patella
Publication date
01-12-2012
Publisher
BioMed Central
Published in
BMC Musculoskeletal Disorders / Issue 1/2012
Electronic ISSN: 1471-2474
DOI
https://doi.org/10.1186/1471-2474-13-88

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