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The atlantomastoid: a muscle variant relevant to point-of-care ultrasound?

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08 nov 2024
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Fig.1.

A. Illustration of the atlantomastoid and typical suboccipital musculature – based on the THIEME Atlas of Anatomy (1 – atlantomastoid; 2 – obliquus capitis superior; 3 – obliquus capitis inferior; 4 – rectus capitis posterior major; 5 – rectus capitis posterior minor; 6 – mastoid process; 7 – transverse process of C1). B. Suboccipital region of a fresh frozen donor with the atlantomastoid muscle present on the right side (posterolateral view). C. Annotated ultrasound image of the atlantomastoid with a yellow circle indicating the 18-gauge needle tip out ofplane on the surface of the muscle, and a blue oval indicating the muscle belly of the atlantomastoid – long axis view (MP – mastoid process; TP C1 – transverse process of the first cervical vertebra). D. Graphic schematic of ultrasound examination with relevant anatomical landmarks and probe positioning (SP C2 – spinous process of the second cervical vertebra; TP C1-transverse process of the first cervical vertebra; MP – mastoid process)
A. Illustration of the atlantomastoid and typical suboccipital musculature – based on the THIEME Atlas of Anatomy (1 – atlantomastoid; 2 – obliquus capitis superior; 3 – obliquus capitis inferior; 4 – rectus capitis posterior major; 5 – rectus capitis posterior minor; 6 – mastoid process; 7 – transverse process of C1). B. Suboccipital region of a fresh frozen donor with the atlantomastoid muscle present on the right side (posterolateral view). C. Annotated ultrasound image of the atlantomastoid with a yellow circle indicating the 18-gauge needle tip out ofplane on the surface of the muscle, and a blue oval indicating the muscle belly of the atlantomastoid – long axis view (MP – mastoid process; TP C1 – transverse process of the first cervical vertebra). D. Graphic schematic of ultrasound examination with relevant anatomical landmarks and probe positioning (SP C2 – spinous process of the second cervical vertebra; TP C1-transverse process of the first cervical vertebra; MP – mastoid process)
Lingua:
Inglese
Frequenza di pubblicazione:
4 volte all'anno
Argomenti della rivista:
Medicina, Scienze medicali di base, Scienze medicali di base, altro