4+ hour, 7+ min ago  (243+ words) A patient complained of left-sided low back pain that radiated to her left ankle and, upon examination, was found to have right hip internal rotation weakness. She was classified by this author as having a directional preference for lumbar rotation…...

2+ mon, 1+ week ago  (178+ words) This technical report proposes a unified, system-level definition of the human core integrating anatomical, biomechanical, and functional perspectives. Despite the central role of core function in spinal stability, movement efficiency, and injury reduction, no comprehensive definition has been consistently adopted…...