Congenital Pseudarthrosis of the Tibia.
—Scott1 briefly discusses the condition known as congenital pseudarthrosis of the tibia and presents a case in which the patient has been carefully followed from birth to the age of 4 years. He classifies patients with this type of deformity as follows: (1) those with well marked anterior angulation, with no fracture at birth; (2) those who show slight deformity at birth but in whom fracture and pseudarthrosis develop after slight trauma; (3) those who have had pseudarthrosis since birth, and (4) those who are normal at birth but in whom fracture and pseudarthrosis develop later. The author's patient, at birth presented marked angulation at the lower third of the tibia, with cyst formation higher in the bone. The cyst eventually healed and was followed by another cyst in a different place. There were typical sclerosis and narrowing of the medullary space in the