The document discusses the classification of ankle fractures according to anatomy, injury mechanics, and stability, highlighting key systems such as Pott, Denis Weber, AO/OTA, and Lauge-Hansen classifications. Pott's classification focuses on the number of fractured malleoli, while Denis Weber categorizes fractures based on the location of the lateral malleolar fracture. The Lauge-Hansen classification considers foot position and deforming forces, resulting in four classes of injury, with 'ser' being the most common.

1. CLASSIFICATION OF ANKLE
FRACTURES
PG SYMPOSIUM
DR. KAUSTAV

2. INTRODUCTON
• Classification done on basis of- anatomy,
injury mechanics, stability.
• Some of the important include-
i. POTT CLASSIFICATION
ii. DENIS WEBER CLASSIFICATION
iii. AO/OTA CLASSIFICATION
iv. LAUGE HANSEN CLASSIFICATION

3. POTT CLASSIFICATION
• Pott first described ankle fractures before discovery of
radiographs.(1769)
• Classification system based on number of fractured
malleoli.
• Fractures classified as unimalleolar, bimalleolar,
trimalleolar based on number of malleoli involved.
• Prognosis worsens with increased number of fractured
malleoli.

5. DENNIS WEBER CLASSIFICATION
• Injury based on location of lateral malleolar fracture
• Fractures classified as A, B or C with fractures below,
at the level and above the syndesmosis resp.
• DRAWBACK- doesn’t comment on medial malleolar
fractures / prognosis .

6. AO CLASSIFICATION

7. LAUGE HANSEN CLASSIFICATION
• Mentions the position of the foot at time of
impact/fracture- supination or pronation.
• Second, the deforming force at the ankle is taken-
abduction/ adduction/internal rotation/ external
rotation
• These results in 4 classes of injury –
i. SER
ii. PER
iii. SAD
iv. PAB
MOST COMMON INJURY IS SER (60%) FOLLOWED BY SAD.

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