What condition may require a lateral wedge orthotic?

A lateral wedge orthotic is often utilized in cases of knee osteoarthritis, particularly when there is a need to relieve pressure on one side of the knee joint. This type of orthotic aids in offloading the affected compartment of the knee, usually the medial compartment in individuals with medial compartment knee osteoarthritis. By incorporating a lateral wedge, the orthotic encourages a more even distribution of weight across the knee, thereby reducing pain and improving function during activities.

For the other conditions mentioned:

• Achilles tendonitis primarily involves the Achilles tendon and benefits from different types of support to reduce strain during movement, rather than lateral wedging.

• Plantar fasciitis is focused on alleviating pain in the heel and arch of the foot, often requiring arch support and cushioning rather than lateral correction.

• Flat foot syndrome is typically managed with arch supports or custom foot orthotics, which provide stability and support for the entire foot, instead of targeting the knee joint specifically.

Thus, the use of a lateral wedge orthotic is particularly appropriate for knee osteoarthritis due to its targeted alignment and weight distribution benefits.