Diagnosing septic arthritis is relatively easy in a toddler or older child due to the typical presentation of fever, malaise, limited range of motion of the joint, limping when the hip or knee is involved, and the other accompanying symptoms of infection, but early diagnosis in an infant less than one-year-old may be quiet difficult since these signs and symptoms are not prominent. The diagnosis is even harder in newborns; since which they may have no constitutional signs of infection. In addition, laboratory studies give normal results, radiography reveals no definitive diagnostic findings, and scintigraphy studies often give false-negative results. Besides the delay in diagnosis and treatment, the age at onset of infection, premature birth and virulence of the organism are the factors affecting prognosis. Due to these factors, the development of permanent sequelae becomes inevitable and various sequelae are seen in these children in the late stage. The recommended treatment options for the patients who have residual deformity are as varied as these sequelae. The purpose of these treatment modalities must be to minimize the disability and to provide near-normal joint functions. In this article different late sequelae of septic arthritis of the hip, shoulder, knee, and ankle and the treatment options that have been suggested in the literature since the early times of orthopedic surgery are reviewed. Complications such as late devastating osteoarthritis and instability of the joints may be avoided by early diagnosis followed by immediate and accurate treatment.