Landells Classification

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Synonyms
Landells classification

The Landells classification is used to categorize fractures of the atlas into three types and was published in 19761.

Type Description
Type I Fracture isolated to the anterior or posterior C1 arch. The fracture does not cross the equator of the C1 arch.
Type II The fracture involves both arches and crosses the equator of the atlas arch. Two or more fracture fragments may be present.
Type III The fracture primarily affects the lateral mass, and the fracture line extends into only one part of the atlas arch.

Figure

Landells type 1 fracture

Landells type 2 fracture
Landells type 2 atlas fracture corresponding to a classic Jefferson fracture. Image adapted from Landells et al.

Landells type 3 fracture

Further Classifications

Atlas fractures can also be categorized according to the Gehweiler classification.

Example

The classic four-point Jefferson fracture corresponds to a Landells type II fracture.

References

    1. Landells C & Van Peteghem P. Fractures of the Atlas: Classification, Treatment and Morbidity. Spine (Phila Pa 1976). 1988;13(5):450-2. ↩ ↩

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    • Text changed: “The Landells classification is used to classify fractures of the [atlas](\/lexikon\/atlas) into three types and was published in 1976[^1].”“The Landells classification is used to categorize fractures of the [atlas](\/lexikon\/atlas) into three types and was published in 1976[^1].”
    • Text changed: “| Type | Description | | ---- | ----------- | | Type I | Fracture isolated to the anterior or posterior C1 arch. The fracture does not cross the equator of the C1 arch. | | Type II | The fracture involves both arches and crosses the equator of the atlas arch. Two or more fracture fragments may be present. | | Type III | The fracture primarily affects the lateral mass, and the fracture line extends into only one part of an atlas arch. |”“| Type | Description | | ---- | ----------- | | Type I | Fracture isolated to the anterior or posterior C1 arch. The fracture does not cross the equator of the C1 arch. | | Type II | The fracture involves both arches and crosses the equator of the atlas arch. Two or more fracture fragments may be present. | | Type III | The fracture primarily affects the lateral mass, and the fracture line extends into only one part of the atlas arch. |”
    • Text changed: “## Further Classifications {#weitere-klassifikationen} Atlas fractures can also be classified according to the [Gehweiler classification](\/scores-und-klassifikationen\/gehweiler-klassifikation).”“## Further Classifications {#weitere-klassifikationen} Atlas fractures can also be categorized according to the [Gehweiler classification](\/scores-und-klassifikationen\/gehweiler-klassifikation).”
    • Text changed: “## Example {#beispiel} The classic four-part [Jefferson fracture](\/lexikon\/jefferson-fraktur) corresponds to a Landells type II fracture.”“## Example {#beispiel} The classic four-point [Jefferson fracture](\/lexikon\/jefferson-fraktur) corresponds to a Landells type II fracture.”
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