The lateral flexors of the spine (i.e. quadratus lumborum, iliocostalis cervicis/lumborum/ thoracis, intertransversarii, levator costarum, scalenus anterior, scalenus medius, scalenus posterior, spinalis cervicis and the external obliques, minimally), move the spine laterally (i.e. to the side). These muscles need to be strong to work in conjunction with our spinal flexors, extensors and rotators so that…

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