All of the following can be the complications of a Malunited Colles fracture, EXCEPT:
olles fracture refers to a fracture dislocation of the inferior radioulnar joint. It is associated with a classical dinner fork deformity. This fracture is associated with all the complications mentioned in the question except the rupture of flexor pollicis tendon. Secondary to colles fracture there is a rupture of extensor pollicis tendon. This occur due to the attrition of the tendon as it glides over the sharp fracture surfaces. It usually occurs 4-6 weeks after the fracture. Ref: Text and Atlas of Complications of Fractures By John Ebneza, Page 50.
Carpal tunnel syndrome
Rupture of flexor pollicis longus tendon
Reflex sympathetic dystrophy (RSD)
Frozen hand shoulder syndrome
Rupture of flexor pollicis longus tendon