Pivotal role of obliquus capitis inferior in torticaput revealed by single-photon emission computed tomography

Su, Juanjuan; Hu, Yaowen; Djibo, Issa Malam; Chen, Shuzhen; Pan, Yan; Zhang, Xiaolong; Pan, Lei; Jin, Lingjing; Teng, Fei

doi:10.1007/s00702-022-02469-6

Cited by 4 publications

(4 citation statements)

References 26 publications

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“…The obliquus capitis inferior is a key muscle in cervical dystonia, especially, in torticaput. 16 ) Su J et al reported that the obliquus capitis inferior was involved in 70% of torticaput cases based on their SPECT/CT findings. 16 ) 18 F-FDG PET/CT and SPECT/CT effectively identify the affected muscles, including the deep muscles like the obliquus capitis inferior.…”

Section: Discussionmentioning

confidence: 99%

“… 16 ) Su J et al reported that the obliquus capitis inferior was involved in 70% of torticaput cases based on their SPECT/CT findings. 16 ) 18 F-FDG PET/CT and SPECT/CT effectively identify the affected muscles, including the deep muscles like the obliquus capitis inferior. Without a thorough clinical examination, such as 18 F-FDG PET/CT or SPECT/CT, determining the involvement of the deep muscles is challenging.…”

Section: Discussionmentioning

confidence: 99%

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Myotomy and Selective Peripheral Denervation Based on <sup>18</sup>F-FDG PET/CT in Intractable Cervical Dystonia: A Case Report

Miura

Horisawa

Kawamata

et al. 2023

NMC Case Report Journal

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Cervical dystonia, characterized by the involuntary contraction of cervical muscles, is the most common form of adult dystonia. In a patient with intractable cervical dystonia, we carried out a myotomy of the left obliquus capitis inferior and selective peripheral denervation (SPD) of the posterior branches of the C3-C6 spinal nerves based on preoperative 18F-fluorodeoxyglucose ( 18 F-FDG) positron emission tomography/computed tomography (PET/CT). The patient was a 65-year-old, right-handed man with an unremarkable medical history. His head rotated involuntarily to the left. Medication and botulinum toxin injections were ineffective, and surgical treatment was considered. 18 F-FDG PET/CT imaging revealed FDG uptake in the left obliquus capitis inferior, right sternocleidomastoideus, and left splenius capitis. Myotomy of the left obliquus capitis inferior and SPD of the posterior branches of the C3-C6 spinal nerves was performed under general anesthesia. During the 6-month follow-up, the patient's Toronto Western Spasmodic Torticollis Rating Scale score improved from 35 to 9. This case shows that preoperative 18 F-FDG PET/CT is effective in identifying dystonic muscles and determining the surgical strategy for cervical dystonia.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Myotomy and Selective Peripheral Denervation Based on <sup>18</sup>F-FDG PET/CT in Intractable Cervical Dystonia: A Case Report

Miura

Horisawa

Kawamata

et al. 2023

NMC Case Report Journal

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“…Dynamic dystonia in a torticaput patient causes a fine, lateral head movement, known as a 'no-no' head tremor. Obliquus capitis inferioris (OCI) has been identified as one of the most common primary active muscles in this rotatory head tremor [11,12]. Schramm et al (2017) showed that OCI was active in all patients from a cohort of 35 studied with a horizontal no-no head tremor.…”

Section: Introductionmentioning

confidence: 99%

“…This has been corroborated using advanced imaging studies. Su et al (2022) utilized SPECT imaging to show that in torticaput patients with a no-no head tremor, OCI is the most frequently involved muscle [12].…”

Section: Introductionmentioning

confidence: 99%

Botulinum Toxin Injections to the Obliquus Capitis Inferioris Muscle for Dynamic Cervical Dystonia Improves Subjective Patient Outcomes

Bessemer,

Jog

2024

Toxins

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The obliquus capitis inferioris (OCI) muscle is a significant driver of cervical dystonia with torticaput movements and a no–no head tremor. Limited data are available on the efficacy of OCI injections on patient outcomes. Our study aims to determine whether the botulinum toxin injection into OCI improves subjective patient quality of life in those with dystonic head tremors. A retrospective chart review was performed for 25 patients receiving injections into the OCI for a dystonic head tremor at the London Movement Disorders Clinic between January 2020 and January 2022. Toronto Western Spasmodic Torticollis Scale-2 (TWSTRS-2) subscale scores for disability and pain, TWSTRS-PSYCH scores, and the global impression of severity were extracted. The average TWSTRS-2 disability subscale change was −2.8 points (p < 0.003). The average TWSTRS-2 pain subscale change was −4.6 points (p < 0.003). The average TWSTRS-PSYCH score prior to injection was 5.6. After injection, the average score was 3.7 (p < 0.004). The patient self-reported average global impression of severity before injection was 7.0; after this, it was 4.2 (p < 0.0003). The OCI injection showed significant improvement in retrospective patient self-reported outcomes; it should be considered early in the treatment plan for cervical dystonia with a no–no head tremor.

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Current use of neurotoxins for alleviating symptoms of cervical dystonia

Aradi,

Hauser

2024

Expert Review of Neurotherapeutics

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Pivotal role of obliquus capitis inferior in torticaput revealed by single-photon emission computed tomography

Cited by 4 publications

References 26 publications

Myotomy and Selective Peripheral Denervation Based on <sup>18</sup>F-FDG PET/CT in Intractable Cervical Dystonia: A Case Report

Myotomy and Selective Peripheral Denervation Based on <sup>18</sup>F-FDG PET/CT in Intractable Cervical Dystonia: A Case Report

Botulinum Toxin Injections to the Obliquus Capitis Inferioris Muscle for Dynamic Cervical Dystonia Improves Subjective Patient Outcomes

Current use of neurotoxins for alleviating symptoms of cervical dystonia

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