Monteggio fracture


 * Fracture of the ulna with dislocation of the radial head ( tear of the lig. annulare with instability and dislocation of the radial head).

Classification

 * according to radio dislocation :
 * Flexion (10%) – the head of the radius is luxated dorsally
 * Extension (90%) – defensive fracture – the head of the radius is luxated ventrally



Clinical picture and diagnosis

 * Relief position – semiflexion + pronation, clinically pain, edema, hematoma, limitation of mobility


 * The deep branch of the radial nerve may be damaged


 * On X- ray (AP + LAT) - McLaughlin's sign - the axis of the diaphysis of the radius passes through the head of the humerus.

Treatment
Always surgery


 * Open reposition and ulna OSY splint (self-compression splint)


 * Then revision of the head of the radius (reposition may be prevented by the interposed joint capsule) and suturing of the torn ligament. annular radii


 * After surgery, plaster cast or orthosis for 14 days, then gradual rehabilitation (rotational movements after 3 weeks)

Related articles

 * Fractures of the forearm
 * Compound fractures of the radius and the ulna
 * Isolated fractures of the radius and ulna
 * Fractures of the proximal ulna
 * Smith's fracture
 * Galeazzi fracture
 * Colles fracture
 * Radius
 * Ulna

Source

 * PASTOR, Jan. Langenbeck's medical web page [online]. [cit. 31.03.2010]. < https://langenbeck.webs.com/ >.