Posterior Leaf Spring Ankle-Foot Orthosis (PLS)**
Posterior leaf spring (PLS) is a type of ankle foot orthosis that is commonly used to correct foot and ankle problems, particularly in patients with cerebral palsy. It is designed to provide support and stability to the ankle joint, while allowing for movement in the hindfoot and forefoot.
What is Posterior Leaf Spring Ankle-Foot Orthosis?
Posterior leaf spring AFO is specifically designed to address the issues of heel rise, toe-in, and varus/varus foot deformities. It is a rigid orthosis that is fitted behind the malleoli (ankle bones) and provides flexibility in the ankle joint during the stance phase. This allows for normal heel strike and push-off movements during walking. The PLS is typically made of_polypropylene, which is a durable and lightweight material.
How does it work?
The posterior leaf spring is attached to the rear of the orthosis, just below the malleoli. It is designed to engage the calcaneus (heel bone) and the talus (bone at the back of the ankle) during the stance phase. This engagement helps to lock the ankle in a neutral position, preventing excessive pronation or supination. At the same time, the spring provides a degree of flexibility, allowing for normal motion in the ankle joint during walking.
Who uses it?
Posterior leaf spring AFO is commonly prescribed to children and adults with conditions that affect the ankle and foot, such as cerebral palsy, spastic diplegia, Charcot-Marie-Tooth disease, and other neurological disorders. It is also used in conjunction with otherorthoses and appliances to provide comprehensive care for foot and ankle problems.
Why is it effective?
Posterior leaf spring AFO is effectiveå› å…¶ ability to provide support and stability to the ankle joint, while allowing for normal movement in the hindfoot and forefoot. It helps to correct foot and ankle deformities, such as heel rise and varus-valgus, and improves gait patterns. By preserving push-off movement during stance, the PLS can help to reduce the risk of contractures and improve overall function in patients with cerebral palsy.
Conclusion
Posterior leaf spring ankle foot orthosis (PLS) is a versatile and effective orthosis that can be used to treat a variety of foot and ankle problems in patients with cerebral palsy. It provides support and stabilization to the ankle joint, while allowing for normal movement in the hindfoot and forefoot. With proper fit and adjustment, PLS can help to improve gait patterns, reduce foot and ankle deformities, and enhance mobility and function in patients with cerebral palsy.
