Role of the external oblique muscle in upper camptocormia for patients with Parkinson's disease

Furusawa, Yoshihiko; Mukai, Yukinori; Kobayashi, Yôko; Sakamoto, Takashi; Murata, Miho

doi:10.1002/mds.24930

Cited by 26 publications

(38 citation statements)

References 5 publications

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“…© C I C E d i z i o n i I n t e r n a z i o n a l i ipsilateral hyperactivity (Table II), consistent with previous findings (Tassorelli et al, 2012;Tinazzi et al, 2013). In the context of PD-related postural abnormalities, the EO is one of the muscles primarily associated with the pathogenesis of upper camptocormia (Furusawa et al, 2012). In the SC in the young healthy controls, bilateral activation of the EO was recorded, with dominant contralateral activity due to the compensatory role of this muscle (Table IV and V).…”

Section: Pisa Syndrome In Parkinson's Diseasesupporting

confidence: 79%

Pisa syndrome in Parkinson�s disease: electromyographic quantification of paraspinal and non-paraspinal muscle activity

Geroin¹

2017

Functional Neurology

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SummaryPatients with Parkinson's disease (PD) and Pisa syndrome (PS) may present tonic dystonic or compensatory (i.e. acting against gravity) hyperactivity in the paraspinal and non-paraspinal muscles. Electromyographic (EMG) activity was measured in nine patients with PD and PS, three with PD without PS, and five healthy controls. Fine-wire intramuscular electrodes were inserted bilaterally into the iliocostalis lumborum (ICL), iliocostalis thoracis (ICT), gluteus medius (GM), and external oblique (EO) muscles. The root mean square (RMS) of the EMG signal was calculated and normalized for each muscle. In stance condition, side-to-side muscle activity comparisons showed a higher RMS only for the contralateral ICL in PD patients with PS (p=0.028). Moreover, with increasing degrees of lateral flexion, the activity of the EO and the ICL muscles progressively increased and decreased, respectively. The present data suggest that contralateral paraspinal muscle activity plays a crucial compensatory role and can be dysfunctional in PD patients with PS.

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Section: Pisa Syndrome In Parkinson's Diseasesupporting

confidence: 79%

Pisa syndrome in Parkinson�s disease: electromyographic quantification of paraspinal and non-paraspinal muscle activity

Geroin¹

2017

Functional Neurology

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“…We previously reported lidocaine injections into the EO improved the posture of PD patients with UC [4,5]. Although abnormal contraction of the EO was considered as a possible pathophysiological mechanism of UC, evidence for abnormal contraction of the EO had not been examined.…”

Section: Discussionmentioning

confidence: 98%

“…Several possible causes of camptocormia have been proposed, including myopathy, myositis, truncal dystonia, imbalance due to rigidity [3]; however, the exact etiology in PD patients remains unknown. In a previous study, we categorized camptocormia into upper and lower types and demonstrated an improvement in posture in PD patients with upper camptocormia (UC) following lidocaine injection into the external oblique muscle (EO), but not the internal oblique or rectus abdominis muscle [4]. We also reported that repeated lidocaine injections prolonged this effect up to 90 days, suggesting that it could be a potential therapeutic option for UC [5].…”

Section: Introductionmentioning

confidence: 92%

“…Details of the study subjects are summarized in Tables 1 and 2. Patients were diagnosed with PD according to the United Kingdom Parkinson Disease Society Brain Bank criteria. UC was defined as abnormal truncal flexion (flexion angle >40 ) at a point between the lower thoracic and upper lumbar vertebrae, whereas LC was defined as abnormal truncal flexion at the hip joint [4]. The flexion angle was measured using the method reported previously [5].…”

Section: Patientsmentioning

confidence: 99%

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Mechanism of camptocormia in Parkinson's disease analyzed by tilt table-EMG recording

Furusawa

Hanakawa

Mukai

et al. 2015

Parkinsonism & Related Disorders

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“…Five of the non-responders were medicated with non-ergot dopamine agonists. Ten of the responders had a lower type of camptocormia, and 4 of the non-responders had a lower type of camptocormia [10] . Lower type of camptocormia was defined as a truncal flection point at the hip joint [10] .…”

Section: Resultsmentioning

confidence: 99%

Treatment of Mild Camptocormia with Selegiline in Patients with Parkinson's Disease

Yoritaka

Mori

2016

Eur Neurol

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Background: Camptocormia in Parkinson's disease (PD) is unresponsive to various therapies and induced difficulties in their day-to-day life. Objective: This study, an open trial, was aimed at assessing the efficacy of selegiline in the treatment of mild camptocormia in PD patients. Methods: Participants were administered 5 mg of selegiline for the first 8 weeks and 7.5 mg for the second 8 weeks. Results: As primary endpoints, the degree of thoracolumbar anteflexion decreased from 23.2° (mean) (11.8° (SD)) at baseline to 18.3° (7.1°) at 16 weeks, and the area of postural sway measured using a Gravicorder increased. However, the differences were not significant. Thoracolumbar anteflexion improved in 60% of the participants. Conclusions: In this study, 60% of the participants showed an improvement in anteflexion of the thoracolumbar spine with selegiline, but the change in the degree of anteflexion was 5°, which was not statistically significant. Participants with significant improvement in thoracolumbar anteflexion had an increased postural sway. This change was induced by a decrease in truncal muscle tonus or change in the center of gravity. This study combined the study of anteflexion and stability, and provides information on the treatment of short-term or mild camptocormia.

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Role of the external oblique muscle in upper camptocormia for patients with Parkinson's disease

Cited by 26 publications

References 5 publications

Pisa syndrome in Parkinson�s disease: electromyographic quantification of paraspinal and non-paraspinal muscle activity

Pisa syndrome in Parkinson�s disease: electromyographic quantification of paraspinal and non-paraspinal muscle activity

Mechanism of camptocormia in Parkinson's disease analyzed by tilt table-EMG recording

Treatment of Mild Camptocormia with Selegiline in Patients with Parkinson's Disease

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