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Its most powerful action is to cause the body to regain the erect position after stooping, by drawing the pelvis backward, being assisted in this action by the biceps femoris (long head), semitendinosus, semimembranosus, and adductor magnus. The lower part of the muscle also acts as an adductor and external rotator of the limb. The upper fibers ...
Being less common than lumbar hyperlordosis [citation needed], hypolordosis (also known as flatback) occurs when there's less of a curve in the lower back or a flattening of the lower back. This occurs because the vertebrae are oriented toward the back of the spine, stretching the disc towards the back and compressing it in the front.
The range of motion for plantar flexion is usually indicated in the literature as 30° to 40°, but sometimes also 50°. The nerves are primarily from the sacral spinal cord roots S1 and S2. Compression of S1 roots may result in weakness in plantarflexion; these nerves run from the lower back to the bottom of the foot. [citation needed]
As such, rotation and obliquity of the pelvis have been determined to be instrumental in producing more symmetric gait, even when the rotation itself is asymmetric between intact and impaired limbs. [18] Torso or trunk motion is also linked to amputee gait, specifically increasing upper-body ranges of motion with decreasing walking velocity. [19]
Once the pelvis begins to tilt anteriorly, stop the passive range of motion, hold the affected thigh in this position, and measure the angle between the affected thigh and table to reveal the fixed flexion deformity of the hip. It is important to control the pelvic tilt to ensure that the Thomas test is valid for evaluating peak hip extension ...
The range of motion describes the total range of motion that a joint is able to do. [5] For example, if a part of the body such as a joint is overstretched or "bent backwards" because of exaggerated extension motion, then it can be described as hyperextended.
Passive range of motion (or PROM) – Therapist or equipment moves the joint through the range of motion with no effort from the patient. Active assisted range of motion (or AAROM ) – Patient uses the muscles surrounding the joint to perform the exercise but requires some help from the therapist or equipment (such as a strap).
One starts with a barbell held on one's shoulders, behind the head. Similar to a back squat, there is some variation with the height on the back at which the bar is held. Holding the bar lower on the back decreases the distance to the pelvis and decreases the strain on the hip and spine extensors: a low bar position allows one to lift heavier weights while a high position allows one to stress ...