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Börner-Schröder C, Lang M, Urban G, Zaidenstadt E, Staisch J, Hauser A, Hannibal I, Huß K, Klose B, Lechner MF, Sollmann N, Landgraf MN, Heinen F, Bonfert MV. Neuromodulation in Pediatric Migraine using Repetitive Neuromuscular Magnetic Stimulation: A Feasibility Study. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1764. [PMID: 38002855 PMCID: PMC10670480 DOI: 10.3390/children10111764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/23/2023] [Accepted: 10/27/2023] [Indexed: 11/26/2023]
Abstract
Migraine has a relevant impact on pediatric health. Non-pharmacological modalities for its management are urgently needed. This study assessed the safety, feasibility, acceptance, and efficacy of repetitive neuromuscular magnetic stimulation (rNMS) in pediatric migraine. A total of 13 patients with migraine, ≥6 headache days during baseline, and ≥1 myofascial trigger point in the upper trapezius muscles (UTM) received six rNMS sessions within 3 weeks. Headache frequency, intensity, and medication intake were monitored using headache calendars; headache-related impairment and quality of life were measured using PedMIDAS and KINDL questionnaires. Muscular involvement was assessed using pressure pain thresholds (PPT). Adherence yielded 100%. In 82% of all rNMS sessions, no side effects occurred. All participants would recommend rNMS and would repeat it. Headache frequency, medication intake, and PedMIDAS scores decreased from baseline to follow-up (FU), trending towards statistical significance (p = 0.089; p = 0.081, p = 0.055). A total of 7 patients were classified as responders, with a ≥25% relative reduction in headache frequency. PPT above the UTM significantly increased from pre- to post-assessment, which sustained until FU (p = 0.015 and 0.026, respectively). rNMS was safe, feasible, well-accepted, and beneficial on the muscular level. The potential to reduce headache-related symptoms together with PPT changes of the targeted UTM may underscore the interplay of peripheral and central mechanisms conceptualized within the trigemino-cervical complex.
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Affiliation(s)
- Corinna Börner-Schröder
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Dr. Von Hauner Children’s Hospital, LMU University Hospital, LMU Munich, 80337 Munich, Germany; (C.B.-S.); (I.H.); (M.N.L.); (F.H.)
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany;
- TUM-Neuroimaging Center, Klinikum Rechts der Isar, Technical University of Munich, 81675 Munich, Germany
| | - Magdalena Lang
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Dr. Von Hauner Children’s Hospital, LMU University Hospital, LMU Munich, 80337 Munich, Germany; (C.B.-S.); (I.H.); (M.N.L.); (F.H.)
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
| | - Giada Urban
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Dr. Von Hauner Children’s Hospital, LMU University Hospital, LMU Munich, 80337 Munich, Germany; (C.B.-S.); (I.H.); (M.N.L.); (F.H.)
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
| | - Erik Zaidenstadt
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Dr. Von Hauner Children’s Hospital, LMU University Hospital, LMU Munich, 80337 Munich, Germany; (C.B.-S.); (I.H.); (M.N.L.); (F.H.)
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
| | - Jacob Staisch
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Dr. Von Hauner Children’s Hospital, LMU University Hospital, LMU Munich, 80337 Munich, Germany; (C.B.-S.); (I.H.); (M.N.L.); (F.H.)
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
| | - Ari Hauser
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Dr. Von Hauner Children’s Hospital, LMU University Hospital, LMU Munich, 80337 Munich, Germany; (C.B.-S.); (I.H.); (M.N.L.); (F.H.)
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
| | - Iris Hannibal
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Dr. Von Hauner Children’s Hospital, LMU University Hospital, LMU Munich, 80337 Munich, Germany; (C.B.-S.); (I.H.); (M.N.L.); (F.H.)
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
| | - Kristina Huß
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
| | - Birgit Klose
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Dr. Von Hauner Children’s Hospital, LMU University Hospital, LMU Munich, 80337 Munich, Germany; (C.B.-S.); (I.H.); (M.N.L.); (F.H.)
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
| | - Matthias F. Lechner
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Dr. Von Hauner Children’s Hospital, LMU University Hospital, LMU Munich, 80337 Munich, Germany; (C.B.-S.); (I.H.); (M.N.L.); (F.H.)
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
| | - Nico Sollmann
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany;
- TUM-Neuroimaging Center, Klinikum Rechts der Isar, Technical University of Munich, 81675 Munich, Germany
- Department of Diagnostic and Interventional Radiology, University Hospital Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Mirjam N. Landgraf
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Dr. Von Hauner Children’s Hospital, LMU University Hospital, LMU Munich, 80337 Munich, Germany; (C.B.-S.); (I.H.); (M.N.L.); (F.H.)
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
| | - Florian Heinen
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Dr. Von Hauner Children’s Hospital, LMU University Hospital, LMU Munich, 80337 Munich, Germany; (C.B.-S.); (I.H.); (M.N.L.); (F.H.)
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
| | - Michaela V. Bonfert
- Division of Pediatric Neurology and Developmental Medicine, Department of Pediatrics, Dr. Von Hauner Children’s Hospital, LMU University Hospital, LMU Munich, 80337 Munich, Germany; (C.B.-S.); (I.H.); (M.N.L.); (F.H.)
- LMU Center for Children with Medical Complexity-iSPZ Hauner, LMU University Hospital, LMU Munich, 80337 Munich, Germany
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Ricci V, Mezian K, Chang KV, Tarantino D, Güvener O, Gervasoni F, Naňka O, Özçakar L. Ultrasound Imaging and Guidance for Cervical Myofascial Pain: A Narrative Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3838. [PMID: 36900848 PMCID: PMC10001397 DOI: 10.3390/ijerph20053838] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 02/07/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
Cervical myofascial pain is a very common clinical condition in the daily practice of musculoskeletal physicians. Physical examination is currently the cornerstone for evaluating the cervical muscles and identifying the eventual presence of myofascial trigger points. Herein, the role of ultrasound assessment in precisely localizing them is progressively mounting in the pertinent literature. Moreover, using ultrasound, not only the muscle tissue but also the fascial and neural elements can be accurately located/evaluated. Indeed, several potential pain generators, in addition to paraspinal muscles, can be involved in the clinical scenario of cervical myofascial pain syndrome. In this article, the authors extensively reviewed the sonographic approach for cervical myofascial pain in order to better diagnose or guide different procedures that can be performed in the clinical practice of musculoskeletal physicians.
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Affiliation(s)
- Vincenzo Ricci
- Physical and Rehabilitation Medicine Unit, Luigi Sacco University Hospital, ASST Fatebenefratelli-Sacco, 20157 Milan, Italy
| | - Kamal Mezian
- Department of Rehabilitation Medicine, First Faculty of Medicine and General University Hospital, Charles University, 12800 Prague, Czech Republic
| | - Ke-Vin Chang
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei Hu Branch, Taipei 10845, Taiwan
| | - Domiziano Tarantino
- Department of Public Health, Rehabilitation Unit, University Federico II of Naples, 80131 Naples, Italy
| | - Orhan Güvener
- Department of Physical and Rehabilitation Medicine, Mersin University Medical School, 33000 Mersin, Turkey
| | - Fabrizio Gervasoni
- Physical and Rehabilitation Medicine Unit, Luigi Sacco University Hospital, ASST Fatebenefratelli-Sacco, 20157 Milan, Italy
| | - Ondřej Naňka
- Institute of Anatomy, First Faculty of Medicine, Charles University, 12800 Prague, Czech Republic
| | - Levent Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, 06100 Ankara, Turkey
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From Histoanatomy to Sonography in Myofascial Pain Syndrome: A EURO-MUSCULUS/USPRM Approach. Am J Phys Med Rehabil 2023; 102:92-97. [PMID: 35067549 DOI: 10.1097/phm.0000000000001975] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
ABSTRACT Myofascial pain is a common clinical condition, whereby accurate physical examination is usually considered as the cornerstone to identify/diagnose the "trigger point complex," that is, the characteristic finding of this syndrome. Considering the emerging role of ultrasound examination as the natural extension of physical assessment for musculoskeletal disorders, we briefly revise the histological/anatomical features of trigger points and propose a standardized, multistep sonographic approach to myofascial pain. We also imply that the integrated clinical-ultrasound evaluation could be considered as a potential tool to discriminate different phases/subsets of this challenging pathology.
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Börner C, Staisch J, Lang M, Hauser A, Hannibal I, Huß K, Klose B, Lechner MF, Sollmann N, Heinen F, Landgraf MN, Bonfert MV. Repetitive Neuromuscular Magnetic Stimulation for Pediatric Headache Disorders: Muscular Effects and Factors Affecting Level of Response. Brain Sci 2022; 12:brainsci12070932. [PMID: 35884738 PMCID: PMC9320292 DOI: 10.3390/brainsci12070932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 02/04/2023] Open
Abstract
Repetitive neuromuscular magnetic stimulation (rNMS) for pediatric headache disorders is feasible, safe, and alleviates headache symptoms. This study assesses muscular effects and factors affecting response to rNMS. A retrospective chart review included children with headaches receiving six rNMS sessions targeting the upper trapezius muscles. Pressure pain thresholds (PPT) were measured before and after rNMS, and at 3-month follow-up (FU). Mean headache frequency, duration, and intensity within the last 3 months were documented. In 20 patients (14.1 ± 2.7 years), PPT significantly increased from pre- to post-treatment (p < 0.001) sustaining until FU. PPT changes significantly differed between primary headache and post-traumatic headache (PTH) (p = 0.019−0.026). Change in headache frequency was significantly higher in patients with than without neck pain (p = 0.032). A total of 60% of patients with neck pain responded to rNMS (≥25%), while 20% of patients without neck pain responded (p = 0.048). 60% of patients receiving rNMS twice a week were responders, while 33% of patients receiving rNMS less or more frequently responded to treatment, respectively. Alleviation of muscular hyperalgesia was demonstrated sustaining for 3 months, which was emphasized in PTH. The rNMS sessions may positively modulate headache symptoms regardless of headache diagnosis. Patients with neck pain profit explicitly well. Two rNMS sessions per week led to the highest reduction in headache frequency.
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Affiliation(s)
- Corinna Börner
- LMU Hospital, Department of Pediatrics—Dr. von Hauner Children’s Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany; (C.B.); (J.S.); (M.L.); (A.H.); (I.H.); (K.H.); (B.K.); (M.F.L.); (F.H.); (M.N.L.)
- LMU Center for Children with Medical Complexity, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany;
- TUM-Neuroimaging Center, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Jacob Staisch
- LMU Hospital, Department of Pediatrics—Dr. von Hauner Children’s Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany; (C.B.); (J.S.); (M.L.); (A.H.); (I.H.); (K.H.); (B.K.); (M.F.L.); (F.H.); (M.N.L.)
- LMU Center for Children with Medical Complexity, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany
| | - Magdalena Lang
- LMU Hospital, Department of Pediatrics—Dr. von Hauner Children’s Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany; (C.B.); (J.S.); (M.L.); (A.H.); (I.H.); (K.H.); (B.K.); (M.F.L.); (F.H.); (M.N.L.)
- LMU Center for Children with Medical Complexity, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany
| | - Ari Hauser
- LMU Hospital, Department of Pediatrics—Dr. von Hauner Children’s Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany; (C.B.); (J.S.); (M.L.); (A.H.); (I.H.); (K.H.); (B.K.); (M.F.L.); (F.H.); (M.N.L.)
- LMU Center for Children with Medical Complexity, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany
| | - Iris Hannibal
- LMU Hospital, Department of Pediatrics—Dr. von Hauner Children’s Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany; (C.B.); (J.S.); (M.L.); (A.H.); (I.H.); (K.H.); (B.K.); (M.F.L.); (F.H.); (M.N.L.)
- LMU Center for Children with Medical Complexity, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany
| | - Kristina Huß
- LMU Hospital, Department of Pediatrics—Dr. von Hauner Children’s Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany; (C.B.); (J.S.); (M.L.); (A.H.); (I.H.); (K.H.); (B.K.); (M.F.L.); (F.H.); (M.N.L.)
- LMU Center for Children with Medical Complexity, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany
| | - Birgit Klose
- LMU Hospital, Department of Pediatrics—Dr. von Hauner Children’s Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany; (C.B.); (J.S.); (M.L.); (A.H.); (I.H.); (K.H.); (B.K.); (M.F.L.); (F.H.); (M.N.L.)
- LMU Center for Children with Medical Complexity, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany
| | - Matthias F. Lechner
- LMU Hospital, Department of Pediatrics—Dr. von Hauner Children’s Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany; (C.B.); (J.S.); (M.L.); (A.H.); (I.H.); (K.H.); (B.K.); (M.F.L.); (F.H.); (M.N.L.)
- LMU Center for Children with Medical Complexity, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany
| | - Nico Sollmann
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany;
- TUM-Neuroimaging Center, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
- Department of Diagnostic and Interventional Radiology, University Hospital Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Florian Heinen
- LMU Hospital, Department of Pediatrics—Dr. von Hauner Children’s Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany; (C.B.); (J.S.); (M.L.); (A.H.); (I.H.); (K.H.); (B.K.); (M.F.L.); (F.H.); (M.N.L.)
- LMU Center for Children with Medical Complexity, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany
| | - Mirjam N. Landgraf
- LMU Hospital, Department of Pediatrics—Dr. von Hauner Children’s Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany; (C.B.); (J.S.); (M.L.); (A.H.); (I.H.); (K.H.); (B.K.); (M.F.L.); (F.H.); (M.N.L.)
- LMU Center for Children with Medical Complexity, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany
| | - Michaela V. Bonfert
- LMU Hospital, Department of Pediatrics—Dr. von Hauner Children’s Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany; (C.B.); (J.S.); (M.L.); (A.H.); (I.H.); (K.H.); (B.K.); (M.F.L.); (F.H.); (M.N.L.)
- LMU Center for Children with Medical Complexity, Dr. von Hauner Children’s Hospital, Ludwig-Maximilians Universität, Lindwurm Str. 4, 80337 Munich, Germany
- Correspondence:
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Staisch J, Börner C, Lang M, Hauser A, Hannibal I, Huß K, Klose B, Lechner MF, Sollmann N, Heinen F, Landgraf MN, Bonfert MV. Repetitive neuromuscular magnetic stimulation in children with headache. Eur J Paediatr Neurol 2022; 39:40-48. [PMID: 35660103 DOI: 10.1016/j.ejpn.2022.04.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/20/2022] [Accepted: 04/27/2022] [Indexed: 12/25/2022]
Abstract
INTRODUCTION Repetitive neuromuscular magnetic stimulation (rNMS) was previously applied in adult patients with episodic migraine, showing beneficial effects on headache characteristics, high safety, and convincing satisfaction. This study aims to assess rNMS as a personalized intervention in pediatric headache. METHODS Retrospective chart review including patients with migraine, TTH, mixed type headache, or PTH, who had received at least one test rNMS session targeting the upper trapezius muscles (UTM). RESULTS 33 patients (13.9 ± 2.5 years; 61% females) were included in the primary analysis, resulting in a total of 182 rNMS sessions. 43 adverse events were documented for 40 of those sessions (22%). Most common side effects were tingling (32.6%), muscle sore (25.5%), shoulder (9.3%) and back pain (9.3%). Secondly, in patients (n = 20) undergoing the intervention, headache frequency (p = 0.017) and minimum and maximum intensities (p = 0.017; p = 0.023) significantly decreased from baseline to 3-month after intervention. 11 patients (44%) were classified as ≥25% responders, with 7 patients (28%) experiencing a ≥75% reduction of headache days. After 73% of interventions, patients reported rNMS helped very well or well. A majority of patients would repeat (88.5%) and recommend rNMS (96.2%) to other patients. CONCLUSION rNMS seems to meet the criteria of safety, feasibility, and acceptance among children and adolescents with three age-typical headache disorders. A significant reduction in headache frequency and intensity during a 3 months follow-up was documented. Larger, prospective, randomized, sham-controlled studies are urgently needed to confirm if rNMS may become a new valuable non-invasive, non-pharmacological treatment option for pediatric headache disorders.
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Affiliation(s)
- Jacob Staisch
- LMU Hospital, Department of Pediatrics - Dr. von Hauner Children's Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians University, Munich, Germany; LMU Center for Children with Medical Complexity - iSPZ Hauner, Ludwig-Maximilians University, Munich, Germany
| | - Corinna Börner
- LMU Hospital, Department of Pediatrics - Dr. von Hauner Children's Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians University, Munich, Germany; LMU Center for Children with Medical Complexity - iSPZ Hauner, Ludwig-Maximilians University, Munich, Germany; Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany; TUM-Neuroimaging Center, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Magdalena Lang
- LMU Hospital, Department of Pediatrics - Dr. von Hauner Children's Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians University, Munich, Germany; LMU Center for Children with Medical Complexity - iSPZ Hauner, Ludwig-Maximilians University, Munich, Germany
| | - Ari Hauser
- LMU Hospital, Department of Pediatrics - Dr. von Hauner Children's Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians University, Munich, Germany; LMU Center for Children with Medical Complexity - iSPZ Hauner, Ludwig-Maximilians University, Munich, Germany
| | - Iris Hannibal
- LMU Hospital, Department of Pediatrics - Dr. von Hauner Children's Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians University, Munich, Germany; LMU Center for Children with Medical Complexity - iSPZ Hauner, Ludwig-Maximilians University, Munich, Germany
| | - Kristina Huß
- LMU Hospital, Department of Pediatrics - Dr. von Hauner Children's Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians University, Munich, Germany; LMU Center for Children with Medical Complexity - iSPZ Hauner, Ludwig-Maximilians University, Munich, Germany
| | - Birgit Klose
- LMU Hospital, Department of Pediatrics - Dr. von Hauner Children's Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians University, Munich, Germany; LMU Center for Children with Medical Complexity - iSPZ Hauner, Ludwig-Maximilians University, Munich, Germany
| | - Matthias F Lechner
- LMU Hospital, Department of Pediatrics - Dr. von Hauner Children's Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians University, Munich, Germany; LMU Center for Children with Medical Complexity - iSPZ Hauner, Ludwig-Maximilians University, Munich, Germany
| | - Nico Sollmann
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany; TUM-Neuroimaging Center, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany; Department of Diagnostic and Interventional Radiology, University Hospital Ulm, Ulm, Germany
| | - Florian Heinen
- LMU Hospital, Department of Pediatrics - Dr. von Hauner Children's Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians University, Munich, Germany; LMU Center for Children with Medical Complexity - iSPZ Hauner, Ludwig-Maximilians University, Munich, Germany
| | - Mirjam N Landgraf
- LMU Hospital, Department of Pediatrics - Dr. von Hauner Children's Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians University, Munich, Germany; LMU Center for Children with Medical Complexity - iSPZ Hauner, Ludwig-Maximilians University, Munich, Germany
| | - Michaela V Bonfert
- LMU Hospital, Department of Pediatrics - Dr. von Hauner Children's Hospital, Division of Pediatric Neurology and Developmental Medicine, Ludwig-Maximilians University, Munich, Germany; LMU Center for Children with Medical Complexity - iSPZ Hauner, Ludwig-Maximilians University, Munich, Germany.
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Mazza DF, Boutin RD, Chaudhari AJ. Assessment of Myofascial Trigger Points via Imaging: A Systematic Review. Am J Phys Med Rehabil 2021; 100:1003-1014. [PMID: 33990485 PMCID: PMC8448923 DOI: 10.1097/phm.0000000000001789] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT This study systematically reviewed the published literature on the objective characterization of myofascial pain syndrome and myofascial trigger points using imaging methods. PubMed, Embase, Ovid, and the Cochrane Library databases were used, whereas citation searching was conducted in Scopus. Citations were restricted to those published in English and in peer-reviewed journals between 2000 and 2021. Of 1762 abstracts screened, 69 articles underwent full-text review, and 33 were included. Imaging data assessing myofascial trigger points or myofascial pain syndrome were extracted, and important qualitative and quantitative information on general study methodologies, study populations, sample sizes, and myofascial trigger point/myofascial pain syndrome evaluation were tabulated. Methodological quality of eligible studies was assessed based on the Quality Assessment of Diagnostic Accuracy Studies criteria. Biomechanical properties and blood flow of active and latent myofascial trigger points assessed via imaging were found to be quantifiably distinct from those of healthy tissue. Although these studies show promise, more studies are needed. Future studies should focus on assessing diagnostic test accuracy and testing the reproducibility of results to establish the best performing methods. Increasing methodological consistency would further motivate implementing imaging methods in larger clinical studies. Considering the evidence on efficacy, cost, ease of use and time constraints, ultrasound-based methods are currently the imaging modalities of choice for myofascial pain syndrome/myofascial trigger point assessment.
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Affiliation(s)
- Dario F. Mazza
- Department of Radiology, University of California, Davis, Sacramento, CA 95817
| | - Robert D. Boutin
- Department of Radiology, Stanford University School of Medicine, Stanford, CA 94305
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Yu S, Su H, Lu J, Zhao F, Jiang F. Combined T2 Mapping and Diffusion Tensor Imaging: A Sensitive Tool to Assess Myofascial Trigger Points in a Rat Model. J Pain Res 2021; 14:1721-1731. [PMID: 34163230 PMCID: PMC8214538 DOI: 10.2147/jpr.s313966] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 05/20/2021] [Indexed: 11/23/2022] Open
Abstract
Background Myofascial trigger points (MTrPs) are defined as very small and hypersensitive points in skeletal muscle that are palpable, and produce localized pain on compression. The aim of this study was to explore the feasibility of combining T2 mapping with diffusion tensor imaging (DTI) for assessing MTrPs in a rat model and to investigate properties of the pathophysiological mechanisms. Methods Twenty-four Sprague-Dawley rats (model group, n = 14; control group, n = 10) underwent a magnetic resonance imaging (MRI) examination on a 3 T-MRI-scanner with a protocol consisting of T2 mapping and DTI. The MTrPs were established by blunt strike in combination with eccentric exercise. Enzyme-linked immunosorbent assays (ELISAs) were used to detect the levels of interleukin-1ß (IL-1ß) and interleukin-2 (IL-2) and their results were correlated with T2 values. Parameters from MRI including T2 values, fractional anisotropy (FA), axial diffusivity (AD), mean diffusivity (MD), and radial diffusivity (RD) were compared between the two groups. Histological analysis was applied to provide an additional supply for MRI findings. Results The MTrPs of rats displayed significantly increased T2 values and FA (= 0.000) compared with normal controls, whereas MD and RD values were significantly lower (P= 0.031, = 0.000, respectively). There was no statistically significant difference in AD between the two groups (P= 0.400). These differences were accompanied by elevated levels of IL-1ß and interleukin-2 IL-2 in the MTrP group compared with controls. T2 values were positively correlated with elevated IL-1ß levels (r = 0.543, P < 0.05) but were not correlated with IL-2 levels (P > 0.05). Conclusion Combining T2 and DTI sequences creates a sensitive tool to assess MTrPs in a rat model. These data clarify a hypothesis that a trigger point is a chronic and mild muscle injury with inflammation.
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Affiliation(s)
- Shuangcheng Yu
- Department of Radiology, Minzu Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530001, People's Republic of China
| | - Haiqing Su
- Department of Medical Ultrasound, Minzu Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530001, People's Republic of China
| | - Jianchang Lu
- Department of Radiology, Minzu Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530001, People's Republic of China
| | - Fanyu Zhao
- Department of Radiology, Minzu Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530001, People's Republic of China
| | - Fangyan Jiang
- Department of Medical Ultrasound, Minzu Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530001, People's Republic of China
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Sollmann N, Schandelmaier P, Weidlich D, Börner C, Urban G, Lang M, Zimmer C, Karampinos DC, Landgraf MN, Heinen F, Baum T, Bonfert MV. Patients with episodic migraine show increased T2 values of the trapezius muscles - an investigation by quantitative high-resolution magnetic resonance imaging. Cephalalgia 2021; 41:934-942. [PMID: 33615841 PMCID: PMC8217886 DOI: 10.1177/0333102421996374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background Neck pain is frequent in patients with migraine. Likewise, evidence for inflammatory processes in the trapezius muscles is accumulating. However, non-invasive and objectively assessable correlates are missing in vivo. Methods Twenty-one subjects with episodic migraine (mean age: 24.6 ± 3.1 years, 18 females) and 22 controls (mean age: 23.0 ± 2.2 years, 17 females) without any history of headache prospectively underwent physical examination and quantitative magnetic resonance imaging of the trapezius muscles. A T2‐prepared turbo spin-echo sequence was acquired for manual segmentation of the trapezius muscles and extraction of mean T2 values. Results There were no statistically significant differences regarding age, sex, body mass index, or number of myofascial trigger points (mTrPs) between groups. All patients with migraine presented with mTrPs in the trapezius muscles. T2 of the entire trapezius muscles was significantly higher in the migraine group when compared to controls (31.1 ± 0.8 ms vs. 30.1 ± 1.1 ms; p = 0.002). Conclusions Elevated T2 values of the trapezius muscles may indicate subtle inflammatory processes within musculature among patients with migraine because T2 increase is likely to stem from edematous changes. Future work may validate this finding in larger cohorts, but muscle T2 might have potential to develop into a viable in vivo biomarker for muscular affection in migraine.
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Affiliation(s)
- Nico Sollmann
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,TUM-Neuroimaging Center, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,Department of Diagnostic and Interventional Radiology, University Hospital Ulm, Ulm, Germany
| | - Paul Schandelmaier
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig Maximilian University, Munich, Germany
| | - Dominik Weidlich
- Department of Diagnostic and Interventional Radiology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Corinna Börner
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig Maximilian University, Munich, Germany
| | - Giada Urban
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig Maximilian University, Munich, Germany
| | - Magdalena Lang
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig Maximilian University, Munich, Germany
| | - Claus Zimmer
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,TUM-Neuroimaging Center, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Dimitrios C Karampinos
- Department of Diagnostic and Interventional Radiology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Mirjam N Landgraf
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig Maximilian University, Munich, Germany
| | - Florian Heinen
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig Maximilian University, Munich, Germany
| | - Thomas Baum
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Michaela V Bonfert
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig Maximilian University, Munich, Germany
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9
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Luiza da Silva Queiroz M, Bezerra Diniz PR, Nepomuceno Montenegro EJ, de Souza Costa Neto JJ, Santana de Albuquerque Filho E, Valença MM, Sobral de Oliveira Souza AI, da Silva Tenório A, Wanderley D, de Oliveira DA. MRI in migraineurs: are there abnormalities in the area where the myofascial trigger points are palpable and in volume measurements? J Bodyw Mov Ther 2020; 24:260-266. [PMID: 32825998 DOI: 10.1016/j.jbmt.2020.02.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 02/18/2020] [Accepted: 02/24/2020] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Patients with migraine may present a higher quantity of myofascial trigger points (MTrP) and alterations in the cervical muscles when compared to non-migraineurs. The magnetic resonance imaging (MRI) is a robust method for the study of human soft tissues and could be useful to investigate these points. OBJECTIVES To identify the presence of MTrP in the descending fibers of the trapezius muscle in women with migraine and to quantify the muscle volume by MRI, correlating it with the headache characteristics. METHODS A cross-sectional analytic study was conducted among 14 women, eight in migraine group, and six in without migraine group. The presence of MTrP was evaluated using Simons' criteria, and linolenic acid capsules subsequently marked the areas. MRI was performed with 1.5T, T1-weighted sequence, and T2 in the axial, sagittal, and coronal planes. The T1-weighted sequences were performed with and without gadolinium contrast. RESULTS The T1-weighted image analysis with and without gadolinium did not show any signal alteration in the MTrP areas in both groups. The migraine group presented more MTrP in the trapezius muscle (MD [95%CI] = 1[1; 3]; MD [95%CI] = 1[0; 2] right and left side, respectively), and a smaller muscle volume (MD [95%CI] = -198.1[-338.7;-25.6], MD [95%CI] = -149.9[-325.05;-0.13] right and left side, respectively) than non-migraineurs. The migraine frequency presented a negative strong correlation with the trapezius volumes (r = -0.812; p = 0.014). CONCLUSION Migraineurs present more MTrP and a smaller muscle volume than non-migraineurs. The trapezius volume is negatively correlated with migraine frequency. MRI is not a suitable outcome measure for assessing MTrP.
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Affiliation(s)
| | - Paula Rejane Bezerra Diniz
- Post-graduation Program in Neuropsychiatry and Behavioral Sciences, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | | | | | | | | | | | | | - Débora Wanderley
- Physical Therapy Departament, Universidade Federal de Pernambuco, Recife, PE, Brazil.
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10
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[Migraine in childhood and adolescence-neurostimulation as a future innovative approach in terms of a multimodal treatment regimen]. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz 2020; 63:872-880. [PMID: 32504242 DOI: 10.1007/s00103-020-03169-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Although migraine is a relevant health issue in children and adolescents, clinical care and research are still underrepresented and underfunded in this field. Quality of life can be significantly reduced when living with frequent episodes of pain. Due to the high level of vulnerability of the developing brain during adolescence, the risk of chronification and persistence into adulthood is high. In this narrative review, we describe the corner stones of a patient-centered, multimodular treatment regimen. Further, an update on the pathophysiology of migraine is given considering the concept of a periodically oscillating functional state of the brain in migraine patients ("migraine is a brain state"). Besides central mechanisms, muscular structures with the symptoms of muscular pain, tenderness, or myofascial trigger points play an important role. Against this background, the currently available nonpharmacological and innovative neuromodulating approaches are presented focusing on the method of repetitive peripheral magnetic stimulation.
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11
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Hvedstrup J, Kolding LT, Ashina M, Schytz HW. Increased neck muscle stiffness in migraine patients with ictal neck pain: A shear wave elastography study. Cephalalgia 2020; 40:565-574. [DOI: 10.1177/0333102420919998] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BackgroundIctal neck pain is a frequent symptom reported by half of migraine patients. It is unknown if neck pain is caused by peripheral or central mechanisms. Neck muscle stiffness can be investigated with ultrasound shear wave elastography.ObjectivesTo determine if migraine patients with ictal neck pain have stiffer neck muscles interictally compared with patients without ictal neck pain and controls.MethodsThis was a cross-sectional study investigating neck muscle stiffness, pressure pain thresholds and neck pain symptoms in 100 migraine patients recruited from a tertiary headache center and 46 controls.ResultsPatients with ictal neck pain had increased mean neck muscle stiffness interictally compared to both migraine patients without ictal neck pain ( p = 0.018) and controls ( p = 0.036). Muscle stiffness was negatively correlated with pressure pain thresholds in the neck in migraine patients with ictal neck pain (r = −0.292, p = 0.042). There were no differences in mean pressure pain thresholds between migraine subgroups.ConclusionsMigraine patients with ictal neck pain have stiffer neck muscles interictally compared with migraine patients without ictal neck pain and controls measured with ultrasound shear wave elastography. The increased stiffness could be due to local alterations in the neck muscles. Trial registration: clinical-trials.gov, identifier: NCT03626805
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Affiliation(s)
- Jeppe Hvedstrup
- Danish Headache Center, Department of Neurology, Rigshospitalet-Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Glostrup, Denmark
| | - Lærke Tørring Kolding
- Danish Headache Center, Department of Neurology, Rigshospitalet-Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Glostrup, Denmark
| | - Messoud Ashina
- Danish Headache Center, Department of Neurology, Rigshospitalet-Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Glostrup, Denmark
| | - Henrik Winther Schytz
- Danish Headache Center, Department of Neurology, Rigshospitalet-Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Glostrup, Denmark
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12
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Renner T, Sollmann N, Heinen F, Albers L, Trepte-Freisleder F, Klose B, König H, Krieg SM, Bonfert MV, Landgraf MN. Alleviation of migraine symptoms by application of repetitive peripheral magnetic stimulation to myofascial trigger points of neck and shoulder muscles - A randomized trial. Sci Rep 2020; 10:5954. [PMID: 32249788 PMCID: PMC7136237 DOI: 10.1038/s41598-020-62701-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/30/2020] [Indexed: 12/20/2022] Open
Abstract
Migraine is a burdensome disease with an especially high prevalence in women between the age of 15 and 49 years. Non-pharmacological, non-invasive therapeutic methods to control symptoms are increasingly in demand to complement a multimodal intervention approach in migraine. Thirty-seven subjects (age: 25.0 ± 4.1 years; 36 females) diagnosed with high-frequency episodic migraine who presented at least one active myofascial trigger point (mTrP) in the trapezius muscles and at least one latent mTrP in the deltoid muscles bilaterally prospectively underwent six sessions of repetitive peripheral magnetic stimulation (rPMS) over two weeks. Patients were randomly assigned to receive rPMS applied to the mTrPs of the trapezius (n = 19) or deltoid muscles (n = 18). Whereas the trapezius muscle is supposed to be part of the trigemino-cervical complex (TCC) and, thus, involved in the pathophysiology of migraine, the deltoid muscle was not expected to interfere with the TCC and was therefore chosen as a control stimulation site. The headache calendar of the German Migraine and Headache Society (DMKG) as well as the Migraine Disability Assessment (MIDAS) questionnaire were used to evaluate stimulation-related effects. Frequency of headache days decreased significantly in both the trapezius and the deltoid group after six sessions of rPMS (trapezius group: p = 0.005; deltoid group: p = 0.003). The MIDAS score decreased significantly from 29 to 13 points (p = 0.0004) in the trapezius and from 31 to 15 points (p = 0.002) in the deltoid group. Thus, rPMS applied to mTrPs of neck and shoulder muscles offers a promising approach to alleviate headache frequency and symptom burden. Future clinical trials are needed to examine more profoundly these effects, preferably using a sham-controlled setting.
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Affiliation(s)
- Tabea Renner
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Nico Sollmann
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
- TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
| | - Florian Heinen
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Lucia Albers
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
- Department of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Florian Trepte-Freisleder
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Birgit Klose
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Helene König
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Sandro M Krieg
- Department of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Michaela V Bonfert
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Mirjam N Landgraf
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
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13
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Renner T, Sollmann N, Trepte-Freisleder F, Albers L, Mathonia NM, Bonfert MV, König H, Klose B, Krieg SM, Heinen F, Gerstl L, Landgraf MN. Repetitive Peripheral Magnetic Stimulation (rPMS) in Subjects With Migraine-Setup Presentation and Effects on Skeletal Musculature. Front Neurol 2019; 10:738. [PMID: 31379706 PMCID: PMC6646581 DOI: 10.3389/fneur.2019.00738] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 06/24/2019] [Indexed: 01/03/2023] Open
Abstract
Purpose: Repetitive peripheral magnetic stimulation (rPMS) has been successfully applied recently in migraineurs to alleviate migraine symptoms. Symptom relief has been achieved by stimulating myofascial trigger points (mTrPs) of the trapezius muscles, which are considered part of the trigemino-cervical complex (TCC). However, effects on musculature have not been assessed in detail, and the specificity of effects to muscles considered part of the TCC yet has to be elucidated. Against this background, this study presents the setup of rPMS in migraine and evaluates effects on skeletal musculature. Materials and Methods: Thirty-seven adults (mean age: 25.0 ± 4.1 years, 36 females) suffering from migraine and presenting mTrPs according to physical examination underwent rPMS either to mTrPs in the trapezius muscles (considered part of the TCC; n = 19) or deltoid muscles (considered not part of the TCC; n = 18) during six sessions over the course of 2 weeks. Standardized questionnaires were filled in to assess any adverse events and experience with rPMS as well as satisfaction and benefits from stimulation. Algometry was performed to evaluate changes in pressure pain thresholds (PPTs). Results: All stimulation sessions were successfully performed without adverse events, with 84.2% of subjects of the trapezius group and 94.4% of subjects of the deltoid group describing rPMS as comfortable (p = 0.736). Muscular pain or tension improved in 73.7% of subjects of the trapezius group and in 61.1% of subjects of the deltoid group (p = 0.077). PPTs of the trapezius muscles clearly increased from the first to the last stimulation sessions-regardless of the stimulated muscle (rPMS to the trapezius or deltoid muscles). However, depending on the examined muscles the increase of PPTs differed significantly (subjects with stimulation of trapezius muscles: p = 0.021; subjects with stimulation of deltoid muscles: p = 0.080). Conclusion: rPMS is a comfortable method in migraineurs that can improve local muscular pain or tension. Furthermore, it is able to increase directly and indirectly the PPTs of the trapezius muscles (considered part of the TCC) when applied over mTrPs, supporting the role of the TCC in migraineurs.
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Affiliation(s)
- Tabea Renner
- Department of Pediatric Neurology and Developmental Medicine, LMU Center for Children With Medical Complexity, Dr. von Hauner Children's Hospital, LMU-University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Nico Sollmann
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.,TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Florian Trepte-Freisleder
- Department of Pediatric Neurology and Developmental Medicine, LMU Center for Children With Medical Complexity, Dr. von Hauner Children's Hospital, LMU-University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Lucia Albers
- Department of Pediatric Neurology and Developmental Medicine, LMU Center for Children With Medical Complexity, Dr. von Hauner Children's Hospital, LMU-University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Nina M Mathonia
- Department of Pediatric Neurology and Developmental Medicine, LMU Center for Children With Medical Complexity, Dr. von Hauner Children's Hospital, LMU-University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Michaela V Bonfert
- Department of Pediatric Neurology and Developmental Medicine, LMU Center for Children With Medical Complexity, Dr. von Hauner Children's Hospital, LMU-University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Helene König
- Department of Pediatric Neurology and Developmental Medicine, LMU Center for Children With Medical Complexity, Dr. von Hauner Children's Hospital, LMU-University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Birgit Klose
- Department of Pediatric Neurology and Developmental Medicine, LMU Center for Children With Medical Complexity, Dr. von Hauner Children's Hospital, LMU-University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Sandro M Krieg
- Department of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Florian Heinen
- Department of Pediatric Neurology and Developmental Medicine, LMU Center for Children With Medical Complexity, Dr. von Hauner Children's Hospital, LMU-University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Lucia Gerstl
- Department of Pediatric Neurology and Developmental Medicine, LMU Center for Children With Medical Complexity, Dr. von Hauner Children's Hospital, LMU-University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
| | - Mirjam N Landgraf
- Department of Pediatric Neurology and Developmental Medicine, LMU Center for Children With Medical Complexity, Dr. von Hauner Children's Hospital, LMU-University Hospital, Ludwig-Maximilians-Universität, Munich, Germany
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14
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Sollmann N, Mathonia N, Weidlich D, Bonfert M, Schroeder SA, Badura KA, Renner T, Trepte-Freisleder F, Ganter C, Krieg SM, Zimmer C, Rummeny EJ, Karampinos DC, Baum T, Landgraf MN, Heinen F. Quantitative magnetic resonance imaging of the upper trapezius muscles - assessment of myofascial trigger points in patients with migraine. J Headache Pain 2019; 20:8. [PMID: 30658563 PMCID: PMC6734472 DOI: 10.1186/s10194-019-0960-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 01/07/2019] [Indexed: 02/01/2023] Open
Abstract
Background Research in migraine points towards central-peripheral complexity with a widespread pattern of structures involved. Migraine-associated neck and shoulder muscle pain has clinically been conceptualized as myofascial trigger points (mTrPs). However, concepts remain controversial, and the identification of mTrPs is mostly restricted to manual palpation in clinical routine. This study investigates a more objective, quantitative assessment of mTrPs by means of magnetic resonance imaging (MRI) with T2 mapping. Methods Ten subjects (nine females, 25.6 ± 5.2 years) with a diagnosis of migraine according to ICHD-3 underwent bilateral manual palpation of the upper trapezius muscles to localize mTrPs. Capsules were attached to the skin adjacent to the palpated mTrPs for marking. MRI of the neck and shoulder region was performed at 3 T, including a T2-prepared, three-dimensional (3D) turbo spin echo (TSE) sequence. The T2-prepared 3D TSE sequence was used to generate T2 maps, followed by manual placement of regions of interest (ROIs) covering the trapezius muscles of both sides and signal alterations attributable to mTrPs. Results The trapezius muscles showed an average T2 value of 27.7 ± 1.4 ms for the right and an average T2 value of 28.7 ± 1.0 ms for the left side (p = 0.1055). Concerning signal alterations in T2 maps attributed to mTrPs, nine values were obtained for the right (32.3 ± 2.5 ms) and left side (33.0 ± 1.5 ms), respectively (p = 0.0781). When comparing the T2 values of the trapezius muscles to the T2 values extracted from the signal alterations attributed to the mTrPs of the ipsilateral side, we observed a statistically significant difference (p = 0.0039). T2 hyperintensities according to visual image inspection were only reported in four subjects for the right and in two subjects for the left side. Conclusions Our approach enables the identification of mTrPs and their quantification in terms of T2 mapping even in the absence of qualitative signal alterations. Thus, it (1) might potentially challenge the current gold-standard method of physical examination of mTrPs, (2) could allow for more targeted and objectively verifiable interventions, and (3) could add valuable models to understand better central-peripheral mechanisms in migraine.
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Affiliation(s)
- Nico Sollmann
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany. .,TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
| | - Nina Mathonia
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Lindwurmstr. 4, 80337, Munich, Germany
| | - Dominik Weidlich
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany
| | - Michaela Bonfert
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Lindwurmstr. 4, 80337, Munich, Germany
| | - Sebastian A Schroeder
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Lindwurmstr. 4, 80337, Munich, Germany
| | - Katharina A Badura
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Lindwurmstr. 4, 80337, Munich, Germany
| | - Tabea Renner
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Lindwurmstr. 4, 80337, Munich, Germany
| | - Florian Trepte-Freisleder
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Lindwurmstr. 4, 80337, Munich, Germany
| | - Carl Ganter
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany
| | - Sandro M Krieg
- TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.,Department of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany
| | - Claus Zimmer
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany.,TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Ernst J Rummeny
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany
| | - Dimitrios C Karampinos
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany
| | - Thomas Baum
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany
| | - Mirjam N Landgraf
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Lindwurmstr. 4, 80337, Munich, Germany
| | - Florian Heinen
- Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr. von Hauner Children's Hospital, LMU - University Hospital, Ludwig-Maximilians-Universität, Lindwurmstr. 4, 80337, Munich, Germany
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15
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Do TP, Heldarskard GF, Kolding LT, Hvedstrup J, Schytz HW. Myofascial trigger points in migraine and tension-type headache. J Headache Pain 2018; 19:84. [PMID: 30203398 PMCID: PMC6134706 DOI: 10.1186/s10194-018-0913-8] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 09/03/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND A myofascial trigger point is defined as a hyperirritable spot in skeletal muscle that is associated with a hypersensitive palpable nodule in a taut band. It has been suggested that myofascial trigger points take part in chronic pain conditions including primary headache disorders. The aim of this narrative review is to present an overview of the current imaging modalities used for the detection of myofascial trigger points and to review studies of myofascial trigger points in migraine and tension-type headache. FINDINGS Different modalities have been used to assess myofascial trigger points including ultrasound, microdialysis, electromyography, infrared thermography, and magnetic resonance imaging. Ultrasound is the most promising of these modalities and may be used to identify MTrPs if specific methods are used, but there is no precise description of a gold standard using these techniques, and they have yet to be evaluated in headache patients. Active myofascial trigger points are prevalent in migraine patients. Manual palpation can trigger migraine attacks. All intervention studies aiming at trigger points are positive, but this needs to be further verified in placebo-controlled environments. These findings may imply a causal bottom-up association, but studies of migraine patients with comorbid fibromyalgia syndrome suggest otherwise. Whether myofascial trigger points contribute to an increased migraine burden in terms of frequency and intensity is unclear. Active myofascial trigger points are prevalent in tension-type headache coherent with the hypothesis that peripheral mechanisms are involved in the pathophysiology of this headache disorder. Active myofascial trigger points in pericranial muscles in tension-type headache patients are correlated with generalized lower pain pressure thresholds indicating they may contribute to a central sensitization. However, the number of active myofascial trigger points is higher in adults compared with adolescents regardless of no significant association with headache parameters. This suggests myofascial trigger points are accumulated over time as a consequence of TTH rather than contributing to the pathophysiology. CONCLUSIONS Myofascial trigger points are prevalent in both migraine and tension-type headache, but the role they play in the pathophysiology of each disorder and to which degree is unclarified. In the future, ultrasound elastography may be an acceptable diagnostic test.
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Affiliation(s)
- Thien Phu Do
- Headache Diagnostic Laboratory, Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health Sciences, University of Copenhagen, Glostrup, Denmark
| | - Gerda Ferja Heldarskard
- Headache Diagnostic Laboratory, Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health Sciences, University of Copenhagen, Glostrup, Denmark
| | - Lærke Tørring Kolding
- Headache Diagnostic Laboratory, Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health Sciences, University of Copenhagen, Glostrup, Denmark
| | - Jeppe Hvedstrup
- Headache Diagnostic Laboratory, Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health Sciences, University of Copenhagen, Glostrup, Denmark
| | - Henrik Winther Schytz
- Headache Diagnostic Laboratory, Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health Sciences, University of Copenhagen, Glostrup, Denmark
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16
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Janani AS, Pope KJ, Fenton N, Grummett TS, Bakhshayesh H, Lewis TW, Watson DH, Whitham EM, Willoughby JO. Resting cranial and upper cervical muscle activity is increased in patients with migraine. Clin Neurophysiol 2018; 129:1913-1919. [DOI: 10.1016/j.clinph.2018.06.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 06/04/2018] [Accepted: 06/13/2018] [Indexed: 01/03/2023]
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17
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Landgraf MN, König H, Hannibal I, Langhagen T, Bonfert MV, Klose B, Rahmsdorf B, Giese RM, Straube A, von Kries R, Albers L, Ebinger F, Ertl-Wagner B, Kammer B, Körte I, Sollmann N, Krieg S, Heinen F. Migräne im Kindes- und Jugendalter – Gehirn und Muskel? DER NERVENARZT 2017; 88:1402-1410. [DOI: 10.1007/s00115-017-0428-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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18
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Analysis of the upper cervical spine stiffness during axial rotation: A comparative study among patients with tension-type headache or migraine and asymptomatic subjects. Clin Biomech (Bristol, Avon) 2017; 42:128-133. [PMID: 28157621 DOI: 10.1016/j.clinbiomech.2017.01.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 10/19/2016] [Accepted: 01/26/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND Many studies reported the implication of the cervical musculoskeletal system in patients with tension type headache and migraine. The objective of this study is to investigate the upper cervical spine stiffness features in axial rotation among headache patients in comparison with a healthy population. METHODS 48 subjects including 30 migraine patients with/without aura and 18 patients with tension-type headache, aged between 18 and 60years (mean 36, SD 11years) have been evaluated. Stiffness measurements were carried out for passive axial rotation using a torque meter device. The flexion-rotation test was used to emphasize assessment of the upper cervical spine. FINDINGS Neither the stiffness nor the neutral zone varies between different populations studied. Passive range of motion in axial rotation is unilaterally reduced in symptomatic subjects (p=0.001). Considering the elastic zone, right and left motion magnitude was significantly lower for clinical groups compared to the control group. INTERPRETATION Stiffness seems not to be altered among tension type headache and migraine patients. However, patients seem prone to display a larger right-left asymmetry of axial rotation and a reduction in the motion range tolerance, emphasizing the likely link between the cervical discomfort and these pathologies. Any difference is observed in the elastic behavior of the upper cervical spine between the two primary headache populations. However, further investigations are needed to confirm these previous results taking various specific clinical characteristics into consideration.
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19
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Sollmann N, Trepte-Freisleder F, Albers L, Jung NH, Mall V, Meyer B, Heinen F, Krieg SM, Landgraf MN. Magnetic stimulation of the upper trapezius muscles in patients with migraine - A pilot study. Eur J Paediatr Neurol 2016; 20:888-897. [PMID: 27528122 DOI: 10.1016/j.ejpn.2016.07.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 07/20/2016] [Accepted: 07/25/2016] [Indexed: 12/25/2022]
Abstract
BACKGROUND Repetitive peripheral magnetic stimulation (rPMS) has been applied to musculoskeletal pain conditions. Since recent data show that migraine and tension-type headache (TTH) might be closely related to peripheral muscular pain in the neck and shoulder region (supporting the concept of the trigemino-cervical complex (TCC)), this pilot study explores the acceptance of rPMS to the upper trapezius muscles in migraine (partly in combination with TTH). METHODS We used rPMS to stimulate active myofascial trigger points (aTrPs) of the upper trapezius muscles in 20 young adults suffering from migraine. Acceptance was assessed by a standardized questionnaire, whereas self-rated effectiveness was evaluated by headache calendars and the Migraine Disability Assessment (MIDAS). Algometry was performed to explore the local effect of rPMS on the muscles. RESULTS Acceptance of rPMS was shown in all subjects without any adverse events, and rPMS had a statistically significant impact on almost every parameter of the headache calendar and MIDAS. Among others, the number of migraine attacks (p < 0.001) and migraine intensity (p = 0.001) significantly decreased regarding pre- and post-stimulation assessments. Accordingly, 100.0% of subjects would repeat the stimulation, while 90.0% would recommend rPMS as a treatment option for migraine. CONCLUSIONS rPMS might represent a promising tool to alleviate migraine symptoms within the context of myofascial pain. This might be due to stimulation-dependent modulation of the peripheral sensory effect within the TCC in migraine. However, sham-controlled studies with larger and more homogeneous cohorts are needed to prove a potential beneficial effect. Ethics Committee Registration Numbers: 356-14 and 447/14.
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Affiliation(s)
- Nico Sollmann
- Department of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675 Munich, Germany; TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
| | - Florian Trepte-Freisleder
- Department of Pediatric Neurology and Developmental Medicine, Integrated Social Pediatric Center, iSPZ Hauner, Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität, Lindwurmstr. 4, 80337 Munich, Germany.
| | - Lucia Albers
- Institute of Social Pediatrics and Adolescents Medicine, Ludwig-Maximilians-Universität, Haydnstr. 5, 80367 Munich, Germany.
| | - Nikolai H Jung
- kbo-Kinderzentrum München, Social Pediatrics, Technische Universität München, Heiglhofstr. 63, 81377 Munich, Germany.
| | - Volker Mall
- kbo-Kinderzentrum München, Social Pediatrics, Technische Universität München, Heiglhofstr. 63, 81377 Munich, Germany.
| | - Bernhard Meyer
- Department of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675 Munich, Germany.
| | - Florian Heinen
- Department of Pediatric Neurology and Developmental Medicine, Integrated Social Pediatric Center, iSPZ Hauner, Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität, Lindwurmstr. 4, 80337 Munich, Germany; German Center for Vertigo and Balance Disorders, Ludwig-Maximilians-Universität, Munich, Germany.
| | - Sandro M Krieg
- Department of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675 Munich, Germany; TUM-Neuroimaging Center, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
| | - Mirjam N Landgraf
- Department of Pediatric Neurology and Developmental Medicine, Integrated Social Pediatric Center, iSPZ Hauner, Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität, Lindwurmstr. 4, 80337 Munich, Germany; German Center for Vertigo and Balance Disorders, Ludwig-Maximilians-Universität, Munich, Germany.
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