Question

When scapular abductors are weak which postural deviation occurs?

Answer 1

Answer:

Penniform muscles, which include unipennate, bipennate, and multipennate muscles, are designed for higher force production than longitudinal muscles. Longitudinal muscles are long and thin and have parallel fibers that run in the same direction as the length of the muscle. This type of fiber arrangement allows for speed of contraction.

Answer 2

Answer:

When scapular abductors are weak Kyphosis postural deviation is defined occurs.

Kyphosis is an excessive posterior curvature of the spine, resulting in a rounded-shoulders posture. If the scapular adductors are weak, fatigued, or injured, the muscular tension created by the pectoralis minor will tilt the scapulae forward and down, resulting in kyphosis.