Editing Carpal bones (section)

==Development==

{| class="wikitable" align="right"
|+ Appearance of ossification centers of carpal bones<ref name="Schmidt-Lanz-6">{{cite book
 | url = https://books.google.com/books?id=L7a1tkBU8eMC
 | title = Surgical Anatomy of the Hand | page = 7
 | first1 = Hans-Martin | last1 = Schmidt | first2 = Ulrich | last2 = Lanz
 | publisher = Thieme | year = 2003
 | isbn = 1-58890-007-X
}}</ref><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|archive-date=25 January 2020|archive-url=https://web.archive.org/web/20200125215740/http://www.indianjournals.com/ijor.aspx?target=ijor:ijfmt&volume=8&issue=2&article=052|url-status=live}}</ref>
|-
! Bone !! Average !! Variation<ref name="Schmidt-Lanz-6"/> !! Variation<ref name=CHLT/>
|-
| [[Capitate]] || 2.5&nbsp;months || 1–6&nbsp;months || 1–5&nbsp;months
|-
| [[Hamate]] || 4–5.5&nbsp;months || 1–7&nbsp;months || 1–12&nbsp;months
|-
| [[Triquetrum bone|Triquetrum]] || 2&nbsp;years || 5&nbsp;months to 3&nbsp;years || 9&nbsp;months to 4&nbsp;years and 2&nbsp;months
|-
| [[Lunate bone|Lunate]] || 5&nbsp;years || 2–5.5&nbsp;years || 18&nbsp;months to 4&nbsp;years and 3&nbsp;months
|-
| [[Trapezium (bone)|Trapezium]] || 6&nbsp;years || 4–8&nbsp;years ||
|-
| [[Trapezoid bone|Trapezoid]] || 6&nbsp;years || 4–8&nbsp;years || 
|-
| [[Scaphoid]] || 6&nbsp;years || 4–7&nbsp;years ||
|-
| [[Pisiform]] || 12&nbsp;years || 8–12&nbsp;years ||
|}
The carpal bones are [[Endochondral ossification|ossified endochondrally]] (from within the cartilage) and the ossific centers appear only after birth.
<ref name="Platzer-126" />
The formation of these centers roughly follows a chronological spiral pattern starting in the capitate and hamate during the first year of life. The ulnar bones are then ossified before the radial bones, while the sesamoid pisiform arises in the tendon of the [[flexor carpi ulnaris muscle|flexor carpi ulnaris]] after more than ten years.
<ref name="Schmidt-Lanz-6" /> The commencement of ossification for each bone occurs over period like other bones. This is useful in forensic age estimation.<ref name=CHLT/>