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==Projectional radiography ("X-ray")==
===Normal anatomy===
<galleryheights=250 widths=200>
File:X-ray of normal ankle - frontal.jpg|Ankle - frontal
File:Accessory bones of the ankle.jpg|With potential accessory bones
File:X-ray of normal ankle - lateral oblique.jpg|Lateral oblique (to visualize the posterior border of the tibia)
</gallery>
The normal distances between the bones in the ankle are as follows:<ref name="ImaiIkoma2015">{{cite journal|last1=Imai|first1=Kan|last2=Ikoma|first2=Kazuya|last3=Kido|first3=Masamitsu|last4=Maki|first4=Masahiro|last5=Fujiwara|first5=Hiroyoshi|last6=Arai|first6=Yuji|last7=Oda|first7=Ryo|last8=Tokunaga|first8=Daisaku|last9=Inoue|first9=Nozomu|last10=Kubo|first10=Toshikazu|title=Joint space width of the tibiotalar joint in the healthy foot|journal=Journal of Foot and Ankle Research|volume=8|issue=1|year=2015|issn=1757-1146|doi=10.1186/s13047-015-0086-5}}</ref>
*Talus - medial malleolus : 1.70 ± 0.13 mm
*Talus - tibial plafond: 2.04 ± 0.29 mm
*Talus - lateral malleolus: 2.13 ± 0.20 mm
Decreased distances indicate osteoarthritis.
==References==
{{reflist}}
