In the Igbo culture, masks are used in almost all of the ceremonies and are essential to the understanding of the holiday. Also, both cultures have holidays that celebrate ancestors and family. Such as the american Fathers day, and the Igbo celebration of ancestors.
Bending forward or rounding your lower back is called flexion. Flexion in the lumbar spine is primarily limited by compression of the intervertebral disks and tension in the ligaments that run along the back of the spine. The normal range of movement of lumbar flexion is 40 to 50 degrees.he range of motion, or how far your spine can move, is limited by the disks between the vertebrae, the ligaments that tie the vertebrae together and the orientation of the facet joints on the back part of the vertebrae.
It should be recognized that the range of motion (ROM) of joints is not exactly the same among reporting authorities. For example, the reported normal flexion of the lumbar spine may vary between 80Â° and 100Â°.The value cited below is 90Â°, but 80Â° flexion should not interpreted as abnormal. The range of ânormalâ motion also decreases with age, particularly in the spine.t should also be pointed out that the maximum possible range of motion of the spine or peripheral joints is not necessarily required for ânormalâ function in the sense of being able to perform the majority of work or daily living or hobby tasks without significant restriction. Cervical Spine. Forward Flexion 40 â 60Â°.