Editing Lunate bone (section)

==Structure==
The lunate is a crescent-shaped [[carpal bone]] found within the [[hand]]. The lunate is found within the proximal row of carpal bones. Proximally, it abuts the [[radius (bone)|radius]]. Laterally, it articulates with the [[scaphoid bone]], medially with the [[triquetral bone]], and distally with the [[capitate bone]]. The lunate also articulates on its distal and medial surface with the [[hamate bone]].<ref name=GRAYS2005>{{cite book|last=Drake|first=Richard L.|title=Gray's anatomy for students|year=2005|publisher=Elsevier/Churchill Livingstone|location=Philadelphia|isbn=978-0-8089-2306-0|author2=Vogl, Wayne |author3=Tibbitts, Adam W.M. Mitchell  |author4=illustrations by Richard |author5= Richardson, Paul }}</ref>{{rp|708}}<ref name=EATHORNE2005 />

The lunate is stabilised by a [[scapholunate ligament|medial ligament]] to the scaphoid bone and a lateral ligament to the triquetral bone. Ligaments between the radius and carpal bone also stabilise the position of the lunate, as does its position in the lunate fossa of the radius.<ref name=EATHORNE2005 />

===Bone===
The proximal surface of the lunate bone is smooth and convex, articulating with the radius. The lateral surface is flat and narrow, with a crescentic facet for articulation with the [[scaphoid bone]]. The medial surface possesses a smooth and quadrilateral facet for articulation with the [[triquetral bone]]. The palmar surface is rough, as is the dorsal surface. The dorsal surface is broad and rounded. The distal surface of the bone is deep and concave.<ref name=GRAYS1918>{{cite book|last=Gray|first=Henry|title=Anatomy of the Human Body|year=1918|page=6b. The Hand. 1. The Carpus|url=http://www.bartleby.com/107/54.html|access-date=5 January 2014}}</ref>

===Blood supply===
The lunate receives its blood supply from dorsal and palmar branches.<ref name=EATHORNE2005 />

===Variation===
The lunate has a variable shape. About one-third of lunate bones do not possess a medial facet, meaning they do not articulate with the [[hamate bone]]. Additionally, in about 20% of people, blood supply may arise from palmar vessels alone.<ref name=EATHORNE2005 />

===Ossification===
The [[ossification]] of the lunate bone commences between 18 months and 4 years 3 months.<ref name=CHLT>{{cite journal|last1=Balachandran|first1=Ajay|last2=Kartha|first2=Moumitha|last3=Krishna|first3=Anooj|last4=Thomas|first4=Jerry|last5=K|first5=Prathilash|last6=TN|first6=Prem|last7=GK|first7=Libu|last8=B|first8=Krishnan|last9=John|first9=Liza|title=A Study of Ossification of Capitate, Hamate, Triquetral & Lunate in Forensic Age Estimation|journal=Indian Journal of Forensic Medicine & Toxicology|date=2014|volume=8|issue=2|pages=218–224|doi=10.5958/0973-9130.2014.00720.8|url=http://www.indianjournals.com/ijor.aspx?target=ijor:ijfmt&volume=8&issue=2&article=052|access-date=18 August 2014|issn=0973-9130|url-access=subscription}}</ref>