<prompt> Dinner-fork deformity is seen in Fracture of___RadiusUlnaHumerusClavicle  <response>: Ans. a Radius Ref. Maheshwari orthopedics 4th93COLLES FRACTUREFracture at the distal end of radius at corticocancellous junction about 2 cm from distal articular surface in adults with displacements as follows: Dorsal displacement Dorsal tilt Impaction of fragments Mnemonic: DDILLS Lateral displacement Lateral tilt SupinationFollowing are the common injuries associated with Colies fracture: Fracture styloid process of ulna Ulnar collateral ligament rupture Rupture of triangular cartilage of ulna Rupture of interosseous radioulnar ligament, producing radioulnar subluxation.Clinical Features X-ray Dinner fork deformity Dorsal tilt is the most characteristic displacement normally distal articular surface faces ventrally. Most displacements can be identified on X-ray except for supination of the distal fragment, which can be appreciated only clinically.Rx: Essentially conservative Undisplaced fracture immobilization below elbow cast for 6 weeks Displaced fracture manipulative reduction followed by immobilization in Colles cast Shaking hand type. In communited fractures better is percutaneous transfixation of K wires incorporated in plaster cast.Complications n Stiffness of joints most common complication Malunion Subluxation of inferior radioulnar joint Carpal tunnel syndrome Sudecks osteodystrophy Colles fracture is the most common cause Rupture of Extensor pollicis longus tendonAlso Know:Smiths Fracture Bartons Fracture It is reverse of Colles fracture0 Uncommon Garden spade deformity0 Differs from Colles in that:- Distal fragment displaced ventrally and tilts ventrally Rx is by closed reduction and plaster immobilization for 6 weeks. Fractutre extends form the distal articular surface of radius to either its anterior or posterior cortices.- Volar Barton: anterior marginal type- Dorsal Barton: posterior marginal type Rx: Closed manipulation and plaster cast. 