Slight displacement of the cast is not normal.
After the fracture, if the fracture is well aligned with the line, conservative treatment can be taken, with cast immobilization for 4~6 weeks, during this period of time, we need to review the X-ray regularly to see whether the fracture has been displaced or not.
If the fracture has a mild displacement, it is considered that the fracture has been displaced due to localized swelling and localized laxity, and the cast can not play the role of immobilization, which will be accompanied by localized pain, and it is necessary to go to the hospital for manipulation and replacement of the appropriate cast.
Slight displacement is also related to the limb movement or poor posture after immobilization. Attention should be paid to the position of the limb to avoid distortion of the limb.
So playing the cast has a slight displacement need to go to the hospital in time to deal with.