An important tenet of both injury prevention and rehab in athletes is unilateral training, working on one side of the body at a time. Rarely in sports such as basketball are athletes actually on both legs at one time; instead, they spend the majority of their time running, jumping, and cutting on one leg. From an injury prevention standpoint (or just performance enhancement), most people have a dominant side of their body. Unilateral training to the non-dominant side can help reduce the risk of injuries (or improve performance). From a rehab standpoint, the injured limb tends to not function as efficiently as the non-injured limb creating a deficit between the two. Unilateral training can help close this gap.
Single Leg Hops are a great exercise for unilateral training in basketball players. Some keys to watch for when performing Single Leg Hops are:
Avoid excessive movement of the trunk
Soft Landing (allow the knee to bend)
Avoid side-to-side movement of the knee (dynamic valgus/varus)
Avoid excessive forward movement of the knee past the toes
Avoid over pronation/supination of the foot (rolling too far in or out)
Single Leg Hops can be performed in a variety of ways, check out this video for how to best land on one leg: