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In anatomy, pelvic tilt is the orientation of the pelvis in respect to the femurs it rests upon and in space. It can tilt in four basic directions. ==Forms== *Anterior pelvic tilt is when the front of the pelvis drops and the back of the pelvis rises. This happens when the hip flexors shorten and the hip extensors lengthen. *Posterior pelvic tilt is the opposite, when the front of the pelvis rises and the back of the pelvis drops. This happens when the hip flexors lengthen and the hip extensors shorten, particularly the gluteus maximus which is the primary hyperextensor of the hip. *Lateral pelvic tilt describes tilting toward either right or left and is associated with scoliosis or people who have legs of different length. It can also happen when one leg is bent while the other remains straight, in that case the bent side's hip can follow the femur as knee lowers towards the ground. : *Left pelvic tilt is when the right side of the pelvis is elevated higher than the left side. : *Right pelvic tilt is when the left side of the pelvis is elevated higher than the right side. Causes: 1) Anterior pelvic tilt is caused by increased lumbar lordosis and thoracic kyphosis, stretched abdominal muscles, tightened hip flexors. 2) Posterior pelvic tilt is caused by sway back and thoracic kyphosis, stretched flexors and lower abdominal muscles and tightened hamstrings. (Ref. Textbook of Th. Ex./1st/p 73& Goel’s Physiotherapy/Vol III/p 208, 240) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pelvic tilt」の詳細全文を読む スポンサード リンク
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