Mason classification of radial head fractures
Citation, DOI, disclosures and article data
At the time the article was created Jeremy Jones had no recorded disclosures.View Jeremy Jones's current disclosures
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.
type I: non-displaced radial head fractures (or small marginal fractures), also known as a "chisel" fracture
type II: partial articular fractures with displacement (>2 mm)
type III: comminuted fractures involving the entire radial head
IIIa: fracture of the entire radial neck, with the head, completely displaced from the shaft
IIIb: articular fracture involving the entire head, consisting of more than two large fragments
IIIc: fracture with a tilted and impacted articular segment
type IV: fracture of the radial head with dislocation of the elbow joint
In general type I injuries can be treated conservatively whereas type II injuries require open reduction and internal fixation (ORIF). Type III injuries often require early complete excision of the radial head 2.
- 1. Bhandari M. Evidence-Based Orthopedics. Wiley-Blackwell. (2012) ISBN:1405184760. Read it at Google Books - Find it at Amazon
- 2. Mirzayan R, Itamura JM. Shoulder and Elbow Trauma. Thieme Medical Pub. (2004) ISBN:1588902196. Read it at Google Books - Find it at Amazon
- 3. Levine AM, Jupiter JB et-al. Skeletal Trauma. Saunders. (2009) ISBN:1416022201. Read it at Google Books - Find it at Amazon
- 4. Zhao Z, Lyu Y, Leschinger T, Wegmann K, Müller L, Hackl M. Imaging Diagnosis of Radial Head Fractures—evaluation of Plain Radiography Vs. CT Scans. Obere Extremität. 2021;16(3):198-202. doi:10.1007/s11678-021-00642-z