Basketball consists of lots of short sharp sprints in forward and backward directions. Most basketball injuries are in the lower limb with lateral ankle sprains being the most common (usually anterior talofibular and calcaneofibular ligaments).
Different foot malalignments can predispose players to injury. For example, an everted forefoot higher risk of inversion sprains when landing from a jump.
Orthoses need some flexibility to allow for side to side motion, but need to be rigid enough to control foot (if indicated) – also most basketballers are tall and heavy thicker plastic would still be somewhat flexible may need shank dependent device.
Full length top cover to prevent movement in shoe.
Minimal varus correction if possible otherwise increased risk for injury.
Many of the principles of running footwear apply to basketball footwear – except that additional cushioning is needed and the multidirectional nature of basketball needs various internal and external support features to make the shoe stable to prevent ankle sprains. If attempts are made to make shoe lighter by removing midsoles material, there may be an increased risk for injuries to the plantar fascia. A good traction system is needed, especially as the athlete needs to pivot on the toes. At the elite level, players will replace their shoes on an almost weekly basis.