Olecranon fossa
{{short description|Deep triangular depression on the posterior end of the humerus}}
{{Infobox bone
| Name = Olecranon fossa
| Latin = fossa olecrani
| Image = HumerusBack.png
| Caption = Left humerus. Posterior view (olecranon fossa visible at bottom center)
| Image2 = Gray208-trochlea.png
| Caption2 = Left humerus. Posterior view (olecranon fossa visible at bottom center)
| Width = 153
}}
The olecranon fossa is a deep triangular depression on the posterior side of the humerus, superior to the trochlea. It provides space for the olecranon of the ulna during extension of the forearm.
Structure
The olecranon fossa is located on the posterior side of the distal humerus.{{Citation|last=White|first=Tim D.|title=Chapter 9 - Arm: Humerus, Radius, and Ulna|date=2012-01-01|url=http://www.sciencedirect.com/science/article/pii/B978012374134950009X|work=Human Osteology (Third Edition)|pages=175–198|editor-last=White|editor-first=Tim D.|place=San Diego|publisher=Academic Press|language=en|isbn=978-0-12-374134-9|access-date=2021-01-08|last2=Black|first2=Michael T.|last3=Folkens|first3=Pieter A.|editor2-last=Black|editor2-first=Michael T.|editor3-last=Folkens|editor3-first=Pieter A.}}{{Citation|last=White|first=Tim D.|title=Chapter 2 - Anatomical Terminology|date=2012-01-01|url=http://www.sciencedirect.com/science/article/pii/B9780123741349500027|work=Human Osteology (Third Edition)|pages=11–24|editor-last=White|editor-first=Tim D.|place=San Diego|publisher=Academic Press|language=en|isbn=978-0-12-374134-9|access-date=2021-01-08|last2=Black|first2=Michael T.|last3=Folkens|first3=Pieter A.|editor2-last=Black|editor2-first=Michael T.|editor3-last=Folkens|editor3-first=Pieter A.}}
The joint capsule of the elbow attaches to the humerus just proximal to the olecranon fossa.{{Citation|last=Greiwe|first=R. M.|title=4 - Distal humerus fractures: Open reduction and internal fixation|date=2016-01-01|url=http://www.sciencedirect.com/science/article/pii/B9781782424505000046|work=Shoulder and Elbow Trauma and its Complications|pages=65–97|editor-last=Greiwe|editor-first=R. Michael|series=Woodhead Publishing Series in Biomaterials|publisher=Woodhead Publishing|language=en|isbn=978-1-78242-450-5|access-date=2021-01-08}}{{Citation|last=Jacob|first=S.|title=Chapter 2 - Upper Limb|date=2008-01-01|url=http://www.sciencedirect.com/science/article/pii/B9780443103735500051|work=Human Anatomy|pages=5–49|editor-last=Jacob|editor-first=S.|publisher=Churchill Livingstone|language=en|isbn=978-0-443-10373-5|access-date=2021-01-08}}
Function
The olecranon fossa provides space for the olecranon of the ulna during extension of the forearm, from which it gets its name.{{Citation|last=Ozgur|first=Sinan Emre|title=12 - Rehabilitation After Fractures of the Forearm and Elbow|date=2018-01-01|url=http://www.sciencedirect.com/science/article/pii/B9780323393706000123|work=Clinical Orthopaedic Rehabilitation: a Team Approach (Fourth Edition)|pages=57–62.e1|editor-last=Giangarra|editor-first=Charles E.|place=Philadelphia|publisher=Elsevier|language=en|isbn=978-0-323-39370-6|access-date=2021-01-08|last2=Giangarra|first2=Charles E.|editor2-last=Manske|editor2-first=Robert C.}}
Other animals
The olecranon fossa is present in various mammals, including dogs.{{Citation|last=Saunders|first=Deborah Gross|title=26 - Joint Mobilization|date=2014-01-01|url=http://www.sciencedirect.com/science/article/pii/B9781437703092000260|work=Canine Rehabilitation and Physical Therapy (Second Edition)|pages=447–463|editor-last=Millis|editor-first=Darryl|place=St. Louis|publisher=W.B. Saunders|language=en|isbn=978-1-4377-0309-2|access-date=2021-01-08|last2=Walker|first2=J. Randy|last3=Levine|first3=David|editor2-last=Levine|editor2-first=David}}
Additional images
File:Slide1bgbg.JPG|Elbow joint. Deep dissection. Posterior view.
File:Slide2bgbg.JPG|Elbow joint. Deep dissection. Posterior view.
File:Slide3bgbg.JPG|Elbow joint. Deep dissection. Posterior view.
References
{{Gray's}}
External links
- {{BiowebUW|aplab/Table_of_Contents/Lab_04/Humerus_1/Humerus_1d/humerus_1d.html|aplab}}
- Photo of model at Waynesburg College [https://web.archive.org/web/20070928030346/http://www.waynesburg.edu/depts/ccink/skeleton3/olecranonfossa.jpg skeleton3/olecranonfossa]
- {{NormanAnatomy|radiographsul}} ({{NormanAnatomyFig|xrayelbow}})
- [https://web.archive.org/web/20051120090038/http://www.med.umich.edu/rad/muscskel/mskus/images/192/192_post.html Imaging at umich.edu]
{{Bones of upper extremity}}
{{Portal bar|Anatomy}}
{{Authority control}}
Category:Bones of the upper limb
{{musculoskeletal-stub}}