Hard Splints hold the foot in dorsiflexion to break up extensor synergy. Which option lists the correct category?

Hard Splints hold the foot in dorsiflexion to break up extensor synergy. Which option lists the correct category?

• A. Soft Splints
• B. Hard Splints
• C. AFOs
• D. Adjustable braces

Answer: (B)

Holding the ankle in a rigid dorsiflexed position to disrupt extensor synergy is a characteristic use of a hard, rigid orthosis. By placing the foot in dorsiflexion, the plantarflexor muscles are lengthened and their pathological flexor–extensor coupling is reduced, making it easier for the nervous system to activate dorsiflexion and improve foot clearance and control during movement. This positioning helps break up the abnormal synergy that often limits movement after a brain or spinal injury. Soft splints, being flexible, don’t maintain a fixed dorsiflexed posture, so they aren’t as effective at producing that break in synergy. Ankle–foot orthoses can be rigid or flexible, but the specific category described by the mechanism—rigid devices that hold the foot in dorsiflexion—fits the hard splint designation best.

Holding the ankle in a rigid dorsiflexed position to disrupt extensor synergy is a characteristic use of a hard, rigid orthosis. By placing the foot in dorsiflexion, the plantarflexor muscles are lengthened and their pathological flexor–extensor coupling is reduced, making it easier for the nervous system to activate dorsiflexion and improve foot clearance and control during movement. This positioning helps break up the abnormal synergy that often limits movement after a brain or spinal injury.

Soft splints, being flexible, don’t maintain a fixed dorsiflexed posture, so they aren’t as effective at producing that break in synergy. Ankle–foot orthoses can be rigid or flexible, but the specific category described by the mechanism—rigid devices that hold the foot in dorsiflexion—fits the hard splint designation best.