NDLI: The Influence of orthopaedic implants on patient tolerance of neuromuscular electrical stimulation (NMES)

Content Provider	IEEE Xplore Digital Library
Author	Broderick, B.J. Kennedy, C. Breen, P.P. Kearns, S.R. OLaighin, G.
Copyright Year	2010
Description	Author affiliation: Department of Orthopaedics, Galway University Hospitals, Newcastle Road, Ireland (Kearns, S.R.) \|\| School of Engineering and Informatics, National University of Ireland Galway, University Road, Ireland (Broderick, B.J.; Kennedy, C.; Breen, P.P.; OLaighin, G.)
Abstract	Neuromuscular electrical stimulation (NMES) is a potential deep vein thrombosis (DVT) preventative measure that is often over-looked. NMES could be used postoperatively in conjunction with pharmacological prophylaxis to further reduce the incidence rate of DVT following orthopaedic surgery. However, the use of NMES in the recovery period following orthopaedic surgery on patients with metallic hip/knee implants has not been tested to date. The presence of a metallic implant may interfere with the NMES generated electric field causing hypersensitivity at the implant site. This may essentially limit the use of NMES postoperatively. Consequently, patient tolerance of NMES must be assessed before any treatment can be administered. Five hip replacement patients and 5 knee replacement patients participated in this study that were at least 3 weeks post-op. NMES was applied to the calf muscles of each patient using skin surface electrodes and the stimulation intensity was slowly increased. Comfort was assessed by asking the patient to indicate the stimulation intensity corresponding to 4 thresholds: when they first felt the stimulus sensation (sensory threshold), when a muscle contraction was observed (motor threshold), when stimulation became uncomfortable (pain threshold) and when the stimulation became unbearable (pain tolerance). Patients also indicated their overall comfort level on a visual analogue scale and completed a short verbal interview detailing their experience of the NMES treatment. Results indicated that the presence of a metallic implant did not give rise to hypersensitivity to NMES. Patients found the application of calf muscle NMES comfortable and acceptable as a treatment. We conclude that use of NMES on postoperative orthopaedic patients can be safely considered as a DVT prevention method.
Starting Page	5823
Ending Page	5826
File Size	709582
Page Count	4
File Format	PDF
ISBN	9781424441235
ISSN	1557170X
DOI	10.1109/IEMBS.2010.5627491
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-31
Publisher Place	Argentina
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pain Muscles Surgery Knee Implants Electrodes Hip
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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