The interphalangeal angle as a novel radiological measurement tool for Morton’s neuroma – a matched case-control study

Abstract Background The aim of this retrospective study was to examine if a correlation between Morton’s Neuroma (MN) and an increased interphalangeal angle (IPA) or intermetatarsal angle (IMA) can be found in preoperative weightbearing dorsal-plantar X-rays of the foot. Methods Forty-five patients...

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Autores principales:	Martin Zaleski, Timo Tondelli, Sandro Hodel, Dominic Rigling, Stephan Wirth
Formato:	article
Lenguaje:	EN
Publicado:	BMC 2021
Materias:	Morton’s neuroma Interphalangeal angle Intermetatarsal angle Forefoot disorders Diagnosis MRI Diseases of the musculoskeletal system RC925-935
Acceso en línea:	https://doaj.org/article/5a0c5e4464064334a2c9e11b70e4f4f3
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spelling	oai:doaj.org-article:5a0c5e4464064334a2c9e11b70e4f4f32021-12-05T12:04:09ZThe interphalangeal angle as a novel radiological measurement tool for Morton’s neuroma – a matched case-control study10.1186/s13047-021-00502-71757-1146https://doaj.org/article/5a0c5e4464064334a2c9e11b70e4f4f32021-12-01T00:00:00Zhttps://doi.org/10.1186/s13047-021-00502-7https://doaj.org/toc/1757-1146Abstract Background The aim of this retrospective study was to examine if a correlation between Morton’s Neuroma (MN) and an increased interphalangeal angle (IPA) or intermetatarsal angle (IMA) can be found in preoperative weightbearing dorsal-plantar X-rays of the foot. Methods Forty-five patients with forty-nine MN in the interspaces 2/3 or 3/4 and 49 controls were recruited for this study. Every MN was matched with an asymptomatic control without history of metatarsalgia. The diagnosis was made by clinical examination, magnetic resonance imaging (MRI) and positive histopathology after operative resection. IMA 1/5, 2/3, 2/4, 2/5, 3/4 and IPA 2/3, 3/4 were measured for both groups. Results The IPA 3/4 was significantly enlarged by 2.8 degrees (p < 0.001) with Area under the curve (AUC) 0.75 (p < 0.001), sensitivity of 73% and specificity of 67% in feet with MN compared to controls. The IMA 3/4 was significantly enlarged by 1 degree (p < 0.048) with AUC 0.64 (p < 0.031), sensitivity of 71% and specificity of 43% in feet with MN compared to controls. No difference between IMA 2/4, 2/5, 1/5 or correlation between IPA or IMA and the size of the MN in the MRI was found. Conclusion The results confirm the clinical observation of an increased IPA in patients with MN. An increased IPA should therefore be considered in the diagnosis of MN.Martin ZaleskiTimo TondelliSandro HodelDominic RiglingStephan WirthBMCarticleMorton’s neuromaInterphalangeal angleIntermetatarsal angleForefoot disordersDiagnosisMRIDiseases of the musculoskeletal systemRC925-935ENJournal of Foot and Ankle Research, Vol 14, Iss 1, Pp 1-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Morton’s neuroma Interphalangeal angle Intermetatarsal angle Forefoot disorders Diagnosis MRI Diseases of the musculoskeletal system RC925-935
spellingShingle	Morton’s neuroma Interphalangeal angle Intermetatarsal angle Forefoot disorders Diagnosis MRI Diseases of the musculoskeletal system RC925-935 Martin Zaleski Timo Tondelli Sandro Hodel Dominic Rigling Stephan Wirth The interphalangeal angle as a novel radiological measurement tool for Morton’s neuroma – a matched case-control study
description	Abstract Background The aim of this retrospective study was to examine if a correlation between Morton’s Neuroma (MN) and an increased interphalangeal angle (IPA) or intermetatarsal angle (IMA) can be found in preoperative weightbearing dorsal-plantar X-rays of the foot. Methods Forty-five patients with forty-nine MN in the interspaces 2/3 or 3/4 and 49 controls were recruited for this study. Every MN was matched with an asymptomatic control without history of metatarsalgia. The diagnosis was made by clinical examination, magnetic resonance imaging (MRI) and positive histopathology after operative resection. IMA 1/5, 2/3, 2/4, 2/5, 3/4 and IPA 2/3, 3/4 were measured for both groups. Results The IPA 3/4 was significantly enlarged by 2.8 degrees (p < 0.001) with Area under the curve (AUC) 0.75 (p < 0.001), sensitivity of 73% and specificity of 67% in feet with MN compared to controls. The IMA 3/4 was significantly enlarged by 1 degree (p < 0.048) with AUC 0.64 (p < 0.031), sensitivity of 71% and specificity of 43% in feet with MN compared to controls. No difference between IMA 2/4, 2/5, 1/5 or correlation between IPA or IMA and the size of the MN in the MRI was found. Conclusion The results confirm the clinical observation of an increased IPA in patients with MN. An increased IPA should therefore be considered in the diagnosis of MN.
format	article
author	Martin Zaleski Timo Tondelli Sandro Hodel Dominic Rigling Stephan Wirth
author_facet	Martin Zaleski Timo Tondelli Sandro Hodel Dominic Rigling Stephan Wirth
author_sort	Martin Zaleski
title	The interphalangeal angle as a novel radiological measurement tool for Morton’s neuroma – a matched case-control study
title_short	The interphalangeal angle as a novel radiological measurement tool for Morton’s neuroma – a matched case-control study
title_full	The interphalangeal angle as a novel radiological measurement tool for Morton’s neuroma – a matched case-control study
title_fullStr	The interphalangeal angle as a novel radiological measurement tool for Morton’s neuroma – a matched case-control study
title_full_unstemmed	The interphalangeal angle as a novel radiological measurement tool for Morton’s neuroma – a matched case-control study
title_sort	interphalangeal angle as a novel radiological measurement tool for morton’s neuroma – a matched case-control study
publisher	BMC
publishDate	2021
url	https://doaj.org/article/5a0c5e4464064334a2c9e11b70e4f4f3
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The interphalangeal angle as a novel radiological measurement tool for Morton’s neuroma – a matched case-control study

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