Loadin 3D model in Opengl

Dear ones,

I am trying to import a 3d model of human upper limb( shoulder, arm hand and fingers) with hierarchy in OpenGL. Is there a way to manipilate the single joints individually after importing. At the moment I can only manipulate or say rotate the whole arm which is rotating at the shoulder joint.

Is there any other alternative I should use to load this model so that I could identify the individual joints after importing in OpenGl.

Please Help.

Thnaks in Advancve