Solitary (Youth) bone cyst observedpredominantly in males (ratio of boys and girls 3: 1), most commonly between the ages of 10-15 years. Adults rarely observed, but mainly detected in the past disease.
Almost always affects long bones,usually the shoulder or hip. The disease usually occurs without any manifestations, sometimes patients complain of appearing from time to time pain or exhibit at a small swelling. In most cases the first clinical manifestation of solitary bone cyst is broken, often without the bias that arises in connection with a minor injury, or without it.
On examination, the patient with solitary bone cystrevealed thickening of the end of the affected bone, painless at palpation, dense. When pressed on the wall of the large-sized cysts may bowing thickened bones. Movement in the joints limbs are usually retained in full. With the defeat of the femur and tibia bones man starts to limp.
The course has a solitary bone cystcertain stage. Active bone cyst is located in the area of the bone end. At the same time it expressed swelling bone fractures repeatedly occur, gradually developing an appropriate joint immobility. The duration of stage - 8-12 months.
During active growth of the child bone cystIt becomes passive. Cyst gradually shifted towards the center of the bone, decreasing in size. Such bone cysts are asymptomatic. The duration of the transition phase of 6-8 months.
After 1.5-2 years solitary bone cystIt shifted to the central part and the bone does not manifest. However, reduced bone strength, which is a factor contributing to the occurrence of fractures, which grow together, help to reduce the volume of the cavity, ie. E. Its closure. Gradually, in place of bone cyst is a small cavity or seal bone.