In therapy for hypertonic children, positioning aims to break up tone patterns. Which action is described as reducing upper-extremity tone?

In therapy for hypertonic children, positioning aims to break up tone patterns. Which action is described as reducing upper-extremity tone?

• A. Wrist extension to break up upper-extremity tone
• B. Knee flexion to break up tone patterns
• C. Shoulder rotation to increase tone
• D. Deep breathing to reduce tone

Answer: (A)

In therapy for hypertonic children, positioning aims to disrupt fixed tone patterns by lengthening tight muscles and promoting dissociation of joint movements. Extending the wrist accomplishes this by placing the wrist flexors on a stretch. When the wrist is in extension, the wrist and finger flexors are lengthened, which reduces passive resistance and dampens hyperactive stretch reflexes. This change in length and alignment helps release the grip and allows finger extension, making the hand more available for purposeful movement and further motor development. Other actions don’t target this distal, lengthening effect in the upper extremity. Knee flexion addresses the lower extremities, not the hand, and wouldn’t directly reduce upper-extremity tone. Deep breathing can lower overall arousal but isn’t specific to reducing tone in the upper limb. Shoulder rotation might alter arm positioning but isn’t a reliable way to decrease tone in the wrist/fingers. Therefore, extending the wrist is the action that best reduces upper-extremity tone by lengthening the wrist flexors and promoting proper hand function.

In therapy for hypertonic children, positioning aims to disrupt fixed tone patterns by lengthening tight muscles and promoting dissociation of joint movements. Extending the wrist accomplishes this by placing the wrist flexors on a stretch. When the wrist is in extension, the wrist and finger flexors are lengthened, which reduces passive resistance and dampens hyperactive stretch reflexes. This change in length and alignment helps release the grip and allows finger extension, making the hand more available for purposeful movement and further motor development.

Other actions don’t target this distal, lengthening effect in the upper extremity. Knee flexion addresses the lower extremities, not the hand, and wouldn’t directly reduce upper-extremity tone. Deep breathing can lower overall arousal but isn’t specific to reducing tone in the upper limb. Shoulder rotation might alter arm positioning but isn’t a reliable way to decrease tone in the wrist/fingers. Therefore, extending the wrist is the action that best reduces upper-extremity tone by lengthening the wrist flexors and promoting proper hand function.