Cleft epiphysis is a normal variant of an epiphysis. It can be either unilateral or bilateral. The most common site is the epiphysis of the first proximal phalanx of the foot.
Plain radiographs will demonstrate a lucent defect in the epiphysis. The borders of the lucency are variable and may be sharp or irregular. The cleft remains until the fusion of the growth plate.
A cleft epiphysis has to be differentiated from a fracture. Generally fractures demonstrate signs of healing if the radiograph is repeated 2-3 weeks after injury. Recognition of this entity is important to avoid over treatment and unnecessary surgical intervention.
- 1. Harrison RB, Keats TE. Epiphyseal clefts. Skeletal Radiol. 1980;5 (1): 23-7. Pubmed citation
- 2. Dähnert W. Radiology Review Manual. Lippincott Williams & Wilkins. (2011) ISBN:1609139437. Read it at Google Books - Find it at Amazon
- 3. Berquist TH. Imaging of the Foot and Ankle. Lippincott Williams & Wilkins. (2012) ISBN:1451147996. Read it at Google Books - Find it at Amazon
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