<prompt> A colles fracture isCommon in adolescenceA fracture about the ankle jointCommon in elderly womenA fracture of head of the radius  <response>: C i.e. Common in elderly women Colls fracture is fracture of lower end of radius at its coico cancellous junctionQ - 2.5 cm 1.5 inch above the distal aicular surface mostly occuring in post menopausal osteoporotic elderly womenQ ; as a result of fall on outstretched hand. with wrist in extension. It is most common of all fractures in older people. 