Pott's fracture
Encyclopedia
Pott's fracture, also known as Pott’s syndrome I and Dupuytren fracture, is an archaic term loosely applied to a variety of bimalleolar
ankle fractures. The injury is caused by a combined abduction external rotation from an eversion force. This action pulls on the extremely strong medial (deltoid) ligament, often tearing off the medial malleolus. The talus
then moves laterally, shearing off the lateral malleolus or, more commonly, breaking the fibula superior to the tibiofibular syndesmosis
. If the tibia is carried anteriorly, the posterior margin of the distal end of the tibia is also sheared off by the talus. A fractured fibula in addition to detaching the medial malleolus will tear the tibiofibular ligament. The combined fracture of the medial malleolus, lateral malleolus, and the posterior margin of the distal end of the tibia is known as a "trimalleolar fracture." Note that in a "trimalleolar fracture" that the posterior distal end of the tibia is erroneously labeled as a malleolus. A real life example of this would be the foot everting in a football tackling sport's injury. In this injury, a person's ankle receives a lateral force pushing the fibula towards the tibia. The player, on the ground, responds with the force of eversion force from the calcaneous to lesson the initial lateral force. The eversion of the foot twists the fibula from its rest position into the plane where the lateral force originated. To come out of its plane, it must pivot from a certain point to accomplish this rotation. That pivot point is where the fracture would occur. This pivot point, since it is above the anterior tibiofibular ligament, would consequently tear. Better imagine this was as two hands on a clock, one hand facing 12, the other facing 6. Both hands are the fibula of the person's right leg. The lateral force approaches from 3 o'clock. The hand pointing at the 6 everts to the position at 5 (thus laterally) to compensate and thus must in order to occur fracture at its pivot point.
The bimalleolar fractures are less likely to be arthritic than trimalleolar fracture
s.
experienced this injury in 1765 and described his clinical findings in a paper published in 1769.
The term "Dupuytren fracture" refers to the same mechanism, and it is named for Guillaume Dupuytren
.
Bimalleolar fracture
A bimalleolar fracture is a fracture of the ankle that involves the lateral malleolus and the medial malleolus. Studies have shown that bimalleolar fractures are more common in women, people over 60 years of age, and patients with existing comorbidities....
ankle fractures. The injury is caused by a combined abduction external rotation from an eversion force. This action pulls on the extremely strong medial (deltoid) ligament, often tearing off the medial malleolus. The talus
Talus bone
-External links:* *...
then moves laterally, shearing off the lateral malleolus or, more commonly, breaking the fibula superior to the tibiofibular syndesmosis
Syndesmosis
A syndesmosis is slightly movable articulation where the contiguous bony surfaces are united by an interosseous ligament, as in the inferior tibiofibular articulation...
. If the tibia is carried anteriorly, the posterior margin of the distal end of the tibia is also sheared off by the talus. A fractured fibula in addition to detaching the medial malleolus will tear the tibiofibular ligament. The combined fracture of the medial malleolus, lateral malleolus, and the posterior margin of the distal end of the tibia is known as a "trimalleolar fracture." Note that in a "trimalleolar fracture" that the posterior distal end of the tibia is erroneously labeled as a malleolus. A real life example of this would be the foot everting in a football tackling sport's injury. In this injury, a person's ankle receives a lateral force pushing the fibula towards the tibia. The player, on the ground, responds with the force of eversion force from the calcaneous to lesson the initial lateral force. The eversion of the foot twists the fibula from its rest position into the plane where the lateral force originated. To come out of its plane, it must pivot from a certain point to accomplish this rotation. That pivot point is where the fracture would occur. This pivot point, since it is above the anterior tibiofibular ligament, would consequently tear. Better imagine this was as two hands on a clock, one hand facing 12, the other facing 6. Both hands are the fibula of the person's right leg. The lateral force approaches from 3 o'clock. The hand pointing at the 6 everts to the position at 5 (thus laterally) to compensate and thus must in order to occur fracture at its pivot point.
The bimalleolar fractures are less likely to be arthritic than trimalleolar fracture
Trimalleolar fracture
A trimalleolar fracture is a fracture of the ankle that involves the lateral malleolus, medial malleolus and the distal posterior aspect of the tibia, which can be termed the posterior malleolus....
s.
History
English physician Percivall PottPercivall Pott
Sir Percivall Pott London, England) was an English surgeon, one of the founders of orthopedy, and the first scientist to demonstrate that a cancer may be caused by an environmental carcinogen.-Life:...
experienced this injury in 1765 and described his clinical findings in a paper published in 1769.
The term "Dupuytren fracture" refers to the same mechanism, and it is named for Guillaume Dupuytren
Guillaume Dupuytren
Guillaume Dupuytren, Baron was a French anatomist and military surgeon. Although he gained much esteem for treating Napoleon Bonaparte's hemorrhoids, he is best known today for Dupuytren's contracture which is named after him and which he described in 1831.- Birth and education :Guillaume...
.