Long-term results of dorsal neuroma/nerve transposition in the surgical management of Morton’s neuroma and correlation with intraoperative anatomical variations

Abstract Background Morton's neuroma (MN) is a common cause of forefoot pain. After failure of conservative management, surgical procedures include neurectomy or neuroma preserving procedures; resection of deep transverse intermetatarsal ligament only (DTIML), dorsal neurolysis, dorsal nerve tr...

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Main Authors: Manjunath Koti, Nicola Maffulli, Muwaffak Al-Shoaibi, Michael Hughes, Jack McAllister
Format: Article
Language:English
Published: BMC 2022-01-01
Series:Journal of Orthopaedic Surgery and Research
Subjects:
Online Access:https://doi.org/10.1186/s13018-022-02910-2
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author Manjunath Koti
Nicola Maffulli
Muwaffak Al-Shoaibi
Michael Hughes
Jack McAllister
author_facet Manjunath Koti
Nicola Maffulli
Muwaffak Al-Shoaibi
Michael Hughes
Jack McAllister
author_sort Manjunath Koti
collection DOAJ
description Abstract Background Morton's neuroma (MN) is a common cause of forefoot pain. After failure of conservative management, surgical procedures include neurectomy or neuroma preserving procedures; resection of deep transverse intermetatarsal ligament only (DTIML), dorsal neurolysis, dorsal nerve transposition (DNT). Objectives This retrospective study evaluates the long-term results of open DNT, and it also reports anatomical variants in the plantar interdigital nerve. Material and methods The study included 39 patients (30 females and 9 males) who were treated for MN between 2002 and 2016. Results The mean pre-operative Giannini score of 13 (0–30) improved to 61 (20–80) (p < .0001), with only 6 patients scoring less than 50 (poor). Using Coughlin’s criterion for overall satisfaction, 9 patients (23%) reported excellent, 18 patients (46%) good, 6 patients (15%) fair and 6 patients (15%) reported poor results. In the long term, 25 patients (64%) had no pain, 8 patients (20%) had mild pain, and 6 patients (16%) had severe pain. Ten patients (26%) reported normal sensitivity in their toes, 26 patients (66%) had numbness, and 3 patients (8%) reported dysesthesia in their toes. Twenty-two patients (56%) could wear fashionable shoes, 11 patients (28%) comfortable shoes, and 6 patients (16%) modified shoes. Regarding walking distance, 30 patients (77%) had no limitation, and 9 patients (23%) reported some limitation. Nineteen per cent regretted having surgery. Around 40% (17 out of 43 web spaces) showed anatomical variations in either the nerve or in the web space and we could not identify any specific risk factors in relation to the outcome. Conclusion Dividing the DTIML or dorsal neurolysis should be considered as the primary surgical treatment and, if this fails, neurectomy would be an option. DNT can be considered if one is concerned about stump neuroma, but this may be technically demanding and in some patients it may not be possible. Level of Evidence: Level IV - Case Control Retrospective study.
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spelling doaj.art-9bd401b0d10b4b1fa7b288920b9a107b2022-12-22T04:00:19ZengBMCJournal of Orthopaedic Surgery and Research1749-799X2022-01-011711710.1186/s13018-022-02910-2Long-term results of dorsal neuroma/nerve transposition in the surgical management of Morton’s neuroma and correlation with intraoperative anatomical variationsManjunath Koti0Nicola Maffulli1Muwaffak Al-Shoaibi2Michael Hughes3Jack McAllister4Princess Royal University Hospital, Kings College Hospital NHS TrustBarts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Mile End Hospital, Queen Mary University of LondonPrincess Royal University Hospital, Kings College Hospital NHS TrustHomerton University HospitalChelsfield Park HospitalAbstract Background Morton's neuroma (MN) is a common cause of forefoot pain. After failure of conservative management, surgical procedures include neurectomy or neuroma preserving procedures; resection of deep transverse intermetatarsal ligament only (DTIML), dorsal neurolysis, dorsal nerve transposition (DNT). Objectives This retrospective study evaluates the long-term results of open DNT, and it also reports anatomical variants in the plantar interdigital nerve. Material and methods The study included 39 patients (30 females and 9 males) who were treated for MN between 2002 and 2016. Results The mean pre-operative Giannini score of 13 (0–30) improved to 61 (20–80) (p < .0001), with only 6 patients scoring less than 50 (poor). Using Coughlin’s criterion for overall satisfaction, 9 patients (23%) reported excellent, 18 patients (46%) good, 6 patients (15%) fair and 6 patients (15%) reported poor results. In the long term, 25 patients (64%) had no pain, 8 patients (20%) had mild pain, and 6 patients (16%) had severe pain. Ten patients (26%) reported normal sensitivity in their toes, 26 patients (66%) had numbness, and 3 patients (8%) reported dysesthesia in their toes. Twenty-two patients (56%) could wear fashionable shoes, 11 patients (28%) comfortable shoes, and 6 patients (16%) modified shoes. Regarding walking distance, 30 patients (77%) had no limitation, and 9 patients (23%) reported some limitation. Nineteen per cent regretted having surgery. Around 40% (17 out of 43 web spaces) showed anatomical variations in either the nerve or in the web space and we could not identify any specific risk factors in relation to the outcome. Conclusion Dividing the DTIML or dorsal neurolysis should be considered as the primary surgical treatment and, if this fails, neurectomy would be an option. DNT can be considered if one is concerned about stump neuroma, but this may be technically demanding and in some patients it may not be possible. Level of Evidence: Level IV - Case Control Retrospective study.https://doi.org/10.1186/s13018-022-02910-2Morton’s neuroma (MN)Dorsal nerve transposition (DNT)Dorsal nerve relocationDorsal neurectomyDorsal neurolysisDeep transverse intermetatarsal ligament (DTIML)
spellingShingle Manjunath Koti
Nicola Maffulli
Muwaffak Al-Shoaibi
Michael Hughes
Jack McAllister
Long-term results of dorsal neuroma/nerve transposition in the surgical management of Morton’s neuroma and correlation with intraoperative anatomical variations
Journal of Orthopaedic Surgery and Research
Morton’s neuroma (MN)
Dorsal nerve transposition (DNT)
Dorsal nerve relocation
Dorsal neurectomy
Dorsal neurolysis
Deep transverse intermetatarsal ligament (DTIML)
title Long-term results of dorsal neuroma/nerve transposition in the surgical management of Morton’s neuroma and correlation with intraoperative anatomical variations
title_full Long-term results of dorsal neuroma/nerve transposition in the surgical management of Morton’s neuroma and correlation with intraoperative anatomical variations
title_fullStr Long-term results of dorsal neuroma/nerve transposition in the surgical management of Morton’s neuroma and correlation with intraoperative anatomical variations
title_full_unstemmed Long-term results of dorsal neuroma/nerve transposition in the surgical management of Morton’s neuroma and correlation with intraoperative anatomical variations
title_short Long-term results of dorsal neuroma/nerve transposition in the surgical management of Morton’s neuroma and correlation with intraoperative anatomical variations
title_sort long term results of dorsal neuroma nerve transposition in the surgical management of morton s neuroma and correlation with intraoperative anatomical variations
topic Morton’s neuroma (MN)
Dorsal nerve transposition (DNT)
Dorsal nerve relocation
Dorsal neurectomy
Dorsal neurolysis
Deep transverse intermetatarsal ligament (DTIML)
url https://doi.org/10.1186/s13018-022-02910-2
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