MONTEGGIA’S FRACTURE

MONTEGGIA’S FRACTURE
It is a fracture upper third of ulna with dislocation
head of the radius.
This is usually called a “treacherous lesion” because
the dislocation is often missed.
Monteggia first described it in 1881.
Monteggia fractures, why called as treacherous.
Because dislocation of the head of the radius is often
missed.
Reasons
• Missed by patient: As he reflexly pulls the elbow after
fall and reduces the dislocation unknowingly.
• Missed by quack due to ignorance.
• Missed by physician: Fails to order to include the elbow
in radiographs of forearm bone fractures.
• Missed by radiologist: If he or she fails to utilize the
McLaughlin’s line.
Mechanism of Injury
Monteggia’s fractures are more common in children
and are due to fall on the outstretched hands either
in hyperpronation or in hyperextension.
Classification
Bado’s classification is employed in
adults and John Wein’s classification in