October 04, 2011
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Study identifies factors influencing outcomes of AO-Weber B-type fractures after operative, conservative treatments

Van Schie-Van der Weert EM. Arch Orthop Trauma Surg. 2011. doi: 10.1007/s00402-011-1397-z

Satisfactory outcomes for AO-Weber B-type ankle fracture can be reached through operative or nonoperative treatment based on stability and the surgeon’s judgment, according to this study from researchers in the Netherlands.

The team performed a retrospective cohort study of 185 patients with AO-Weber B-type ankle fractures, recording the characteristics of the patients, fractures and treatment. The Olerud-Molander Ankle Score, American Orthopaedic Foot and Ankle Society ankle-hindfoot score, and the Visual Analog Score were all used to measure clinical and functional outcomes, as well as overall satisfaction.

Overall, the researchers wrote, 82 patients were treated conservatively and 103 underwent operative treatment. Most of the conservatively treated fractures were AO-Weber B1.1 type fractures, with fractures displaying fibular displacement — AO type B1.2 and Lauge-Hansen type SER-4 — were mostly treated operatively.

Outcome scores in the nonoperative group, according to the study abstract, were independently negatively affected by age, affected side, BMI, fibular displacement and duration of plaster immobilization. Among those patients treated operatively, the duration of plaster immobilization was labeled as a factor in negative outcomes.