Citation, DOI, disclosures and article data
Citation:
Skalski M, Knipe H, Elfeky M, et al. Metaphyseal diaphyseal angle. Reference article, Radiopaedia.org (Accessed on 28 Mar 2024) https://doi.org/10.53347/rID-23626
Disclosures:
At the time the article was last revised Henry Knipe had the following disclosures:
- Integral Diagnostics, Shareholder (ongoing)
- Micro-X Ltd, Shareholder (ongoing)
These were assessed during peer review and were determined to
not be relevant to the changes that were made.
View Henry Knipe's current disclosures
The metaphyseal-diaphyseal angle (of Drennan) is an important measurement used to distinguish between tibia vara (Blount disease) and physiological bowleg.
Measurement
This angle is measured by drawing a line along the long axis of the tibia, creating a perpendicular to this line, and drawing another line through the axial plane of the proximal tibial metaphysis. The angle created between the perpendicular line shown and the metaphyseal line is the metaphyseal diaphyseal angle ref.
Interpretation
It is abnormal if >11o, indicating Blount disease ref.
History and etymology
The metaphyseal-diaphyseal angle was described by Levine and Drennan in 1982 1.
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1. Levine A & Drennan J. Physiological Bowing and Tibia Vara. The Metaphyseal-Diaphyseal Angle in the Measurement of Bowleg Deformities. J Bone Joint Surg Am. 1982;64(8):1158-63. - Pubmed
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2. Cheema J, Grissom L, Harcke H. Radiographic Characteristics of Lower-Extremity Bowing in Children. Radiographics. 2003;23(4):871-80. doi:10.1148/rg.234025149 - Pubmed
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