Slipped capital femoral epiphysis (SCFE) is a condition that affects the hip in teenagers between the ages of 12 and 16 most often. Cases have been reported as early as age nine years old. In this condition, the growth center of the hip (the capital femoral epiphysis) actually slips backwards on the top of the femur (the thighbone).
Children and teens with a stable slip are still able to put weight on that leg and walk. It may be necessary to use crutches, walking sticks, or some other assistance but they can get around. There is pain but not to the point of being incapacitated as with an unstable hip.
Unstable means they are unable to put any weight on the affected leg. The pain is so severe that even with crutches or other supportive aids, they are unable to walk. Usually, the more severe the slippage, the greater the painful symptoms and the more likely it is that the hip is unstable.
If untreated this can lead to serious problems in the hip joint later in life. Fortunately, the condition can be treated and the complications avoided or reduced if recognized early. Surgery is usually necessary to stabilize the hip and prevent the situation from getting worse.