March 2017

Mechanics of Breathing

Mechanics of quiet respiration The Diaphragm is primary respiratory muscle.  The Diaphragm contracts, pulling the central tendon down until the abdominal wall prevents the abdominal viscera from moving any further.  This increases the vertical diameter.  The 12th rib is fixed by quadratus lumborum. Central tendon is fixed so the diaphragm now elevates the lower 6 […]

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Cervical Myelopathy Quiz

Cervical Myelopathy is a reduction of the sagittal diameter of the cervical spinal canal.  The canal is normally 17-18mm wide in adults.  It  can be caused by a mechanical reason such as a disc lesion or degenerative stenosis (most common level C5/6, C6/7), bone spurs, traumatic dislocation or fracture or medical issues such as transverse myelitis, MS, neuromyelitis optica (immune disorder

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