Pediatric unicompartmental bone cyst

Uncommon solitary bone cysts are not uncommon. The sac is a single cavity lined with a film and contains a grass-yellow liquid. The disease occurs in the pediatric and juvenile stages, with more men. Bone cysts are often located on the metaphysis of the humerus and femur. The cyst wall is often found accidentally after trauma or even pathological fracture, or the upper femoral lesions often attract attention due to abnormal gait. The initial lesions originated from the metaphysis of the adjacent epiphyseal plate, which grew away from the epiphyseal plate. The upper end of the humerus accounts for 50%, followed by the upper and lower ends of the femur and the proximal end of the tibia and fibula, occasionally in the calcaneus, metacarpal and sacrum. It has also recently been reported in the epiphysis. The prognosis of this disease is good.