Tennis involves a great deal of foot work. Foot and ankle injuries can occur from the continuous side to side and quick stopping and starting motions required in this sport. The playing surface also plays a role, as hard courts are less forgiving compared to clay courts. Tennis players should be aware of the following risks:

• Inversion ankle sprains can damage the ankle ligaments, and can also be associated with peroneal tendon injuries and fractures. 
• Overuse and excessive training can lead to heel pain (plantar fasciitis), Achilles tendonitis, sesamoiditis, stress fractures, posterior tibial tendonitis (or PTTD), and calcaneal apophysitis in children and adolescents.