Burwell and Charnley used radiographic criteria to evaluate the adequacy of reduction after therapy of a displaced ankle fracture. These are based on the criteria of Magnusson, Vasli and Klossner.
Adequacy of reduction:
(1) anatomic (good)
(2) fair
(3) poor
Parameters:
(1) medial or lateral displacement of the medial and lateral malleoli
(2) angulation
(3) longitudinal displacement of medial and lateral malleoli
(4) posterior displacement of the lateral malleolus
(5) proximal displacement of a large posterior fragment
(6) residual displacement of the talus
|
Parameter |
anatomic |
fair |
poor |
|
medial displacement of medial or lateral malleoli |
none |
none |
any |
|
lateral displacement of medial or lateral malleoli |
none |
none |
any |
|
angulation |
none |
none |
any |
|
longitudinal displacement of medial or lateral malleolus |
<= 1 mm |
NA |
NA |
|
posterior displacement of lateral malleolus |
<= 1 mm |
2 - 5 mm |
> 5 mm |
|
proximal displacement of a large posterior fragment |
<= 2 mm |
2 - 5 mm |
> 5 mm |
|
residual displacement of talus |
none |
none |
any |
where:
• A posterior fragment large enough to involve the articular surface was termed a posterior malleolus.
• Longitudinal displacement and posterior displacement of the lateral malleolus may refer to the same feature.
Purpose: To evaluate the radiographic appearance of a displaced ankle fracture after reduction using the criteria of Burwell and Charnley.
Specialty: Surgery, orthopedic, Emergency Medicine, Critical Care, Surgery, general
Objective: imaging studies
ICD-10: S82,
