Which pathologies would indicate the need for medial longitudinal arch support in a functional foot orthotic?

The indication for medial longitudinal arch support in a functional foot orthotic is particularly associated with plantar fasciitis and posterior tibialis tendon dysfunction.

Plantar fasciitis involves inflammation of the plantar fascia, which can be aggravated by excessive pronation or inadequate support of the medial arch. Providing medial arch support stabilizes the foot’s alignment and reduces strain on the plantar fascia, thereby alleviating pain and promoting healing.

Similarly, posterior tibialis tendon dysfunction often occurs when the medial arch collapses, leading to increased stress on the posterior tibialis tendon. Arch support helps maintain optimal foot mechanics, aiding in the proper function of the tendon and reducing the risk of further injury or exacerbation of the condition.

The other conditions mentioned, while they each have distinct characteristics and paths, do not primarily benefit from arch support. For instance, Morton's neuroma primarily involves nerve entrapment between metatarsal heads and may benefit more from metatarsal pads rather than arch support. Achilles tendinopathy is related to the heel and calf function, requiring a different treatment focus, often targeting heel elevation or calf stretching, rather than direct arch support. Lastly, metatarsalgia involves pain in the metatarsal region and may require different orthotic