What risks are involved with local steroid injection for plantar fasciitis

Description: "The RCT identified by the review gave no information on harms. Corticosteroid injections can be painful. Complications observed from local corticosteroid injection throughout the body include infection, subcutaneous fat atrophy, skin pigmentation changes, fascial rupture, peripheral nerve injury, and muscle damage among others. Observational studies have reported rupture of the plantar fascia in people receiving corticosteroid injections. One study reported a 10% incidence of rupture among 122 injected heels. A second study examined 37 people with a presumptive diagnosis of plantar fascia rupture, all of whom had had plantar fasciitis and all of whom had previously been treated with corticosteroid injection. History revealed that in 13/37 (35%) people the rupture had been a sudden event, whereas in the remainder it seemed to be gradual. The study reported that most had resolution of symptoms, but this often took 6_12 months to occur. Rupture may relieve the original heel pain, but may cause arch and mid-foot strain, lateral plantar nerve dysfunction, stress fracture, deformity, and swelling, all of which may persist".