Hi, thanks for writing to HCM.
The fact that he is able to move the joint indicates that he has not sustained any major fracture
. But an xray of the injured site is mandatory to rule out any minor bone injuries.
I feel that he could have suffered a Hematoma
(blood clot) producing pain at the injured area. This is usually self limiting and resolves spontaneously with the following measures -
* Rest to the injured part and protect him from further injury
to the hand.
* Ice packing should be applied for about 10 minutes once in every 2 hours.
* Use elastic compression bandage around the swollen area
* Elevation of the limb
& anti inflammatory medications like Motrin
or Aleve as needed.
Hope this information is helpful. Good day