case_images: PMC6260380_01
case_images: a) The longitudinal acromion - olecranon line transecting the transverse line from the axillary fold. Anatomically, the quadrilateral space is 2 cm cranial to this transection point. b) A close up of the two lines and the point (x) localizing the quadrilateral space. c) The ultrasound probe is use.
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case_images: PMC6260380_01_gr1.jpg
case_images: fig0005
case_images: This point is marked blue in Fig. 1a&b. Using 6-15 Mhz linear ultrasound probe (Fig. 1C) positioned at the postero-medial aspect of the upper arm in the sagittal plane, we first identify the humeral head and neck.
case_images: The red circle marks the localized cutaneous branch of the axillary nerve at the skin level (located by ultrasound).
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case_images: PMC6260380_01_gr2.jpg
case_images: fig0010
case_images: In the current case, the cutaneous branch at the level of the skin is marked as a red circle in Fig. 2.
case_images: The cutaneous branch of the axillary nerve is dissected (shown under blue back-ground).
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case_images: fig0015
case_images: The cutaneous branch is then identified and dissected (Fig. 3).
case_images: The cutaneous branch is traced retrograde to the axillary nerve in the quadrilateral space.
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case_images: PMC6260380_01_gr4.jpg
case_images: fig0020
case_images: Next, the cutaneous branch is followed retrograde to the axillary nerve in the quadrilateral space (Fig. 4).
case_images: The divided axillary nerve and the divided triceps nerve are shown under the blue back-ground just prior to coaptation using fibrin glue.
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case_images: PMC6260380_01_gr5.jpg
case_images: fig0025
case_images: The selected triceps motor branch is transected as distal as possible and is transposed proximally for coaptation to the divided deltoid nerve using fibrin glue (Fig. 5).