Ogden classification (modification of Watson-Jones classification) is a special type of investigating the fracture pattern, severity, degree, and fracture angle of tibial tubercle fracture, tibial tubercle avulsion fractures, tibial plateau stress fracture, tibial tuberosity avulsion injuries classification. It is the most universal and acceptable classification until now. Types 1: avulsion of the apophysis without injury to the tibial epiphysis. type 2: epiphysis is lifted cephalad and incompletely fractured. type 3: displacement of the proximal base of the epiphysis with the fracture line extending into the joint.
Classification
There are multiple classification systems with multiple modifiers. The most commonly used is the modified Ogden classification.
Modified Ogden classification (modification of Watson-Jones classification):
- type I: fracture of the secondary ossification center near the patella tendon insertion
- type II: fracture between the primary and secondary ossification centers
- type III: a fracture that traverses the primary and secondary ossification centers (most common type)
- type IV: fracture through the entire physis
- type V: avulsion of the periosteal sleeve
- modifiers: A – nondisplaced and B – displaced
Watson-Jones classification:
- type 1: avulsion of the apophysis without injury to the tibial epiphysis
- type 2: epiphysis is lifted cephalad and incompletely fractured
- type 3: displacement of the proximal base of the epiphysis with the fracture line extending into the joint
Classification
According to orthobulet.com
Ogden Classification (modification of Watson-Jones)
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Type I
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Fracture of the secondary ossification center near the insertion of the patellar tendon
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Type II
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Fracture propagates proximally between primary and secondary ossification centers
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Type III
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Coronal fracture extending posteriorly to cross the primary ossification center
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Type IV
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Fracture through the entire proximal tibial physis
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Type V
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Periosteal sleeve avulsion of the extensor mechanism from the secondary ossification center
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Modifier: A (nondisplaced), B (displaced)
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or
According to Science direct.com
Ogden classification of a tibial tubercle avulsion fracture.
type | description |
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IA | Fracture distal to the junction of ossification center of proximal tibial epiphysis and tubercle |
IB | Same as type IA but with comminution of the fracture fragment |
IIA | Fracture extension to the junction of proximal tibial physis |
IIB | Same as type IIA but with comminution of the fracture fragment |
IIIA | The fracture extends into the joint through proximal tibial epiphysis with displacement of the fracture fragment |
IIIB | Same as type IIIA with comminution of the fracture fragment Fracture extension transversely through proximal |
IV | Tibial physis with the displacement of the fracture fragment |
References