<prompt> All of the following can be the complications of a malunited Colles fracture except :Rupture of flexor pollicis longus tendonReflex sympathetic dystrophy RSDCarpal tunnel syndromeCarpal instability  <response>: Complications of Colles fracture :Complications in colleges fracture are high 50 - 60. Following complications may occur1 The stiffness of fingers and joints :The stiffness of finger, wrist and shoulder is the most common avoidable complication of Colles fracture.2 Malunion :It is the second most common complication.It results in dinner fork deformity.Sudeks osteodystrophy reflex sympathetic dystrophy.Carpal tunnel syndrome.Carpal instability.Rupture of the extensor pollicis longus tendon.Frozen shoulder syndrome.TFCC injury.Non - union is very rare. 