Home-based Self-delivered Mirror Therapy for Phantom Limb Pain

Status Completed

Clinical Trial Summary

The goals of the study are to determine whether self-delivered, home-based mirror therapy decreases the frequency and intensity of phantom limb pain and improves mood and physical function in persons with phantom limb pain.

The investigators hypothesize that self-delivered home-based mirror therapy will significantly decrease phantom pain intensity, will improve mood, and will improve function at one-month follow-up.

Clinical Trial Description

Background: Incidence of acquired amputation is increasing due to military conflict injuries and the increasing prevalence of diabetes-related peripheral vascular disease. Phantom pain is a commonly experienced comorbid condition. Existing treatments have shown mixed success in treating phantom pain. Mirror therapy has been shown to be an effective treatment when used under the guidance of a therapist in a clinical setting. There is anecdotal evidence that home-based therapy may also be effective.

Objective: Determine whether self-delivered, home-based mirror therapy decreases the frequency and intensity of phantom limb pain and improves the psychological status and physical function of amputees with phantom limb pain.

Design: Single group trial comparing pre- and post-treatment measures. Setting and Subjects: Up to 50 subjects with unilateral limb amputation and phantom limb pain will be recruited from the VA and OHSU hospital clinics. The investigators will also be passively recruiting through Kaiser Permanente Northwest (KPNW). The Pain Clinic and Physical Therapy Department at KPNW will post flyers in their waiting and patient areas for potential subjects to see. Interested patients will then self-refer to the study. Flyers will also be sent to regional amputee support groups in the Northwest and Southern California for distribution to their members. Certain inclusion and exclusion criteria must be met.

Intervention: Subjects will receive an information sheet and instruction in performing mirror therapy at home.

Measurements: Subjects will complete standard questionnaires designed to measure phantom pain level, function, depressive symptoms, pain-related anxiety, catastrophizing, and sleep quality. Subjects will also be asked about current use of pain medications and to keep a daily diary to keep track of treatment sessions.

Analysis: For the primary analysis comparing difference between baseline and 1 month post treatment, a paired t-test will be used to compare continuous variables (pain, depressive symptoms, pain-related anxiety level, sleep quality, pain catastrophizing, function) and for categorical outcomes (use of pain medications), McNemar's test or test of symmetry will be used. To investigate whether treatment gains for pain, depressive symptoms, pain-related anxiety level, sleep quality, pain catastrophizing, or function are sustained over time, a linear model will be used with controlling for correlation within repeated measures.

a. Specific Aims:

1. Primary Aim and Hypothesis: Primary Aim: Determine whether self-delivered, home-based mirror therapy decreases the intensity of phantom limb pain at one month follow-up. The primary outcome measure will be average pain intensity (the Brief Pain Inventory-short form; BPI-sf).

Hypothesis for Primary Aim #1: Amputees who practice mirror therapy at home will experience a decrease in the intensity of their phantom limb pain as measured by the Brief Pain Inventory-short form (BPI-sf) at one month follow-up. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00827294
Study type	Interventional
Source	Oregon Health and Science University
Contact
Status	Completed
Phase	Early Phase 1
Start date	January 2009
Completion date	November 2010

View Details

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