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. 2019 Sep;120(3):348-358.
doi: 10.1002/jso.25586. Epub 2019 Jun 13.

Targeted muscle reinnervation in oncologic amputees: Early experience of a novel institutional protocol

John H Alexander  1 , Sumanas W Jordan  2 , Julie M West  3 , Amy Compston  4 , Jennifer Fugitt  2 , J Byers Bowen  3 , Gregory A Dumanian  2 , Raphael Pollock  5 , Joel L Mayerson  1 , Thomas J Scharschmidt  1 , Ian L Valerio  3
Affiliations

Targeted muscle reinnervation in oncologic amputees: Early experience of a novel institutional protocol

John H Alexander et al. J Surg Oncol. 2019 Sep.

Abstract

Background: We describe a multidisciplinary approach for comprehensive care of amputees with concurrent targeted muscle reinnervation (TMR) at the time of amputation.

Methods: Our TMR cohort was compared to a cross-sectional sample of unselected oncologic amputees not treated at our institution (N = 58). Patient-Reported Outcomes Measurement Information System (NRS, PROMIS) were used to assess postamputation pain.

Results: Thirty-one patients underwent amputation with concurrent TMR during the study; 27 patients completed pain surveys; 15 had greater than 1 year follow-up (mean follow-up 14.7 months). Neuroma symptoms occurred significantly less frequently and with less intensity among the TMR cohort. Mean differences for PROMIS pain intensity, behavior, and interference for phantom limb pain (PLP) were 5.855 (95%CI 1.159-10.55; P = .015), 5.896 (95%CI 0.492-11.30; P = .033), and 7.435 (95%CI 1.797-13.07; P = .011) respectively, with lower scores for TMR cohort. For residual limb pain, PROMIS pain intensity, behavior, and interference mean differences were 5.477 (95%CI 0.528-10.42; P = .031), 6.195 (95%CI 0.705-11.69; P = .028), and 6.816 (95%CI 1.438-12.2; P = .014), respectively. Fifty-six percent took opioids before amputation compared to 22% at 1 year postoperatively.

Conclusions: Multidisciplinary care of amputees including concurrent amputation and TMR, multimodal postoperative pain management, amputee-centered rehabilitation, and peer support demonstrates reduced incidence and severity of neuroma and PLP.

Keywords: neuroma; pain management; phantom limb pain; residual limb pain.

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Conflict of interest statement

CONFLICT OF INTERESTS

The authors declare that there is no conflict of interests.

Figures

FIGURE 1
FIGURE 1
Opioid prescriptions for TMR-treated oncologic amputees. Time zero represents the day of amputation and TMR. TMR, targeted muscle reinnervation
FIGURE 2
FIGURE 2
Frequency (A) and intensity (B) of neuroma symptoms at last follow-up. Dark solid bars represent the general cohort; lighter shaded bars represent the TMR cohort. All general versus TMR comparisons are statistically significant by nonparametric regression with P < .05. TMR, targeted muscle reinnervation [Color figure can be viewed at wileyonlinelibrary.com]
See this image and copyright information in PMC

Comment in

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