{"id":166964,"date":"2026-07-27T10:05:30","date_gmt":"2026-07-27T10:05:30","guid":{"rendered":"https:\/\/pabau.com\/?p=166964"},"modified":"2026-08-13T13:02:52","modified_gmt":"2026-08-13T13:02:52","slug":"danis-weber-classification","status":"publish","type":"post","link":"https:\/\/pabau.com\/es\/blog\/danis-weber-classification\/","title":{"rendered":"Danis-Weber classification: Ankle fracture types explained"},"content":{"rendered":"
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Key Takeaways<\/h3>\n <\/div>\n
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The Danis-Weber classification categorizes ankle fractures by fibular fracture level relative to the distal tibiofibular syndesmosis, using three types: A, B, and C.<\/p>\n <\/div>\n

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Weber A fractures are infrasyndesmotic and generally stable; Weber C fractures are suprasyndesmotic with obligate syndesmotic disruption requiring surgical fixation in most cases.<\/p>\n <\/div>\n

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Weber B fractures are the most common and clinically challenging: stability is variable and requires stress radiographs or clinical assessment before deciding on operative vs. nonoperative management.<\/p>\n <\/div>\n

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Pabau supports orthopaedic and musculoskeletal practices with structured clinical documentation, follow-up scheduling, and digital forms to streamline fracture management workflows.<\/p>\n <\/div>\n <\/div>\n <\/div>\n \n\n\n

Ankle fractures are among the most common orthopaedic injuries seen in emergency departments and outpatient practices. Most are misclassified at first contact. The Danis-Weber classification gives clinicians a fast, radiograph-based framework to characterize fibular fractures and guide initial management decisions, and it takes roughly ten seconds to apply once you know the anatomy.<\/p>\n\n\n\n

This guide covers each Weber type in detail, explains how to apply the classification on plain radiographs, compares it with the Lauge-Hansen system, and outlines the clinical decision thresholds that separate conservative from operative management. It is aimed at orthopaedic trainees, emergency medicine practitioners, radiologists, and musculoskeletal physiotherapists involved in physiotherapy practice management<\/a>.<\/p>\n\n\n\n

What is the Danis-Weber classification?<\/h2>\n\n\n\n

The Danis-Weber classification, also called simply the Weber classification, organizes fibular fractures by their position relative to the distal tibiofibular syndesmosis. The core question is simple: where on the fibula did the fracture occur in relation to that joint?<\/p>\n\n\n\n

Robert Danis, a Belgian surgeon, is credited with the original description circa 1949. Bernhard Georg Weber later refined and popularized the system, which is why both names appear. The AO Foundation<\/a> subsequently incorporated Weber’s framework into its own alphanumeric classification (AO\/OTA 44), making the two systems largely interchangeable in modern orthopaedic literature.<\/p>\n\n\n\n

Three types exist. Each carries distinct implications for syndesmotic integrity, fracture stability, and treatment pathway.<\/p>\n\n\n\n

Weber A: Infrasyndesmotic fracture<\/h2>\n\n\n\n

A Weber A fracture sits below the level of the syndesmosis, typically at or below the tip of the fibula. Because the syndesmosis is intact and the ankle mortise is unaffected, these injuries are almost always stable.<\/p>\n\n\n\n