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4 de abr. de 2024 · The Mason classification ( sometimes known as Mason-Johnston classification) is used to classify radial head fractures and is useful when assessing further treatment options 1,2. Classification type I: non-displaced radial head fractures (or small marginal fractures), also known as a "chisel" fracture
- Mostafa Elfeky
12 de nov. de 2023 · Radial Head Fractures are common intra-articular elbow fractures that can be associated with an episode of elbow instability, a mechanical block to elbow motion, an injury to the distal radioulnar joint and/or to the interosseous membrane (Essex-Lopresti). Diagnosis can be made with plain radiographs of the elbow.
17 de mar. de 2012 · Radial head fractures range in severity from occult and nondisplaced fractures to fractures with severe displacement and comminution. The principal goal of the Mason classification – like many fracture classifications – is to guide treatment according to the pattern of the injury.
- Nicholas P. Iannuzzi, Seth S. Leopold
- 2012
- Epidemiology
- Pathology
- Radiographic Features
- Treatment and Prognosis
- Practical Points
Although fractures of the radial head are seen in all age groups, they usually occur in adults (85% between 20-60 years of age) and more frequently in women (M: F 1:2) 2.
Radial head fractures usually occur as a result of indirect trauma, with most resulting from a fall on an abducted arm with minimal or moderate flexion of the elbow joint (0 - 80°) 2. This results in valgus pronation stress with the radial head forcibly pushed against the capitulum of the humerus 1,2. In practice, the history is often a fall onto a...
The Mason-Johnston classificationcan be used to further classify radial head fractures, although, in practice, most radiologists merely describe the injury. The elbow is typically radiographed in AP and lateral projections, although an external oblique view is very frequently also obtained to better visualize the radial head. When a fracture is not...
Treatment depends on the degree of displacement and involvement of the articular surface (as well as associated injuries). Non-operative management has good results in undisplaced fractures without a mechanical block 5. In general, type I (see Mason classification) injuries can be treated conservatively whereas type II injuries require open reducti...
In addition to reporting the presence of a radial fracture, a number of specific features should be sought +/- commented upon: 1. fracture 1.1. location 1.2. involvement of the articular surface 1.3. articular step-off/gap 1.4. comminution 1.5. displacement and impaction 2. associated injuries 2.1. evaluate rest of elbow for 2.1.1. coronoid process...
The Mason classification separates radial head fractures based on the location of the fracture and the amount of comminution and displacement involved ( Table 1 ); Mason described a Type 1 fracture as one that either had a fissure (nondisplaced) or a peripheral fracture of the rim, a Type 2 fracture as a marginal sector fracture with displacemen...
Proximal radial head fractures, commonly described using Mason classification, have four grades. The orthopedic surgeon determines the diagnosis of different Mason fractures, and they decide the interventions needed.
A comprehensive study of ORIF in radial head fractures by Ring 10 shows the relatively poor outcome from the operation in Mason type III fracture. This study followed up 16 of 26 original cases to an average of 44 months (range 25-102 months).
