Encyclopedia entry

Clavicle

Version 1

Abstract

The clavicle is often (2-6% of cases) traversed by a small canal which provides passage for one of the intermediate supraclavicular nerves. Santos reported the frequency to be about 6.6%. This canal reportedly occurs more frequently on the left side. The costoclavicular ligament may cause a deep impression in the clavicle, which may be mistakenly identified as a lesion when seen in x-ray films. The coracoclavicular syndesmosis may be a diarthrosis or a cartilaginous symphysis.

The clavicle is often (2-6% of cases) traversed by a small canal which provides passage for one of the intermediate supraclavicular nerves. Santos reported the frequency to be about 6.6%. This canal reportedly occurs more frequently on the left side.

The costoclavicular ligament may cause a deep impression in the clavicle, which may be mistakenly identified as a lesion when seen in x-ray films.

The coracoclavicular syndesmosis may be a diarthrosis or a cartilaginous symphysis.

The roughened area on the superior surface of the clavicle, so-called deltoid tubercle, may be elongated to form a deltoid process.

Bifurcate clavicle and duplication of the clavicle have been described.

The partial or complete absence of a clavicle was mentioned previously in relation to defects in the skull, and may be associated with a hereditary condition termed cleidocranial dysostosis.

Cleidocranial Dysostosis

Figura della scheda «Clavicle», da Anatomy Atlases

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Clavicular Canals for Supraclavicular Nerves

Figura della scheda «Clavicle», da Anatomy Atlases

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Riferimenti dell’opera originale

Elenco riportato come compare nella fonte, senza normalizzazione dei formati bibliografici.

  • Fischer, E. (1957) Persistierende Klavikualapophyse. Fortschr. Rontgenstr. 86:532.
  • Gegenbaur, C. (1864) Ein Fall von erblichem Mangel der Pars acromialis Claviculae mit Bemerkungen über die Entwickelung der Clavicula. Jenaische Zeitschrift f. Med. u. Naturw. 1:1-16.
  • Giaccai, L., Salaam, M. and H. Zellweger. (1954) Cleidocranial dysostosis with osteopetrosis. Acta. Radiol. 41:417-424.
  • Gruber, W. (1871) Über das Tuberculum deltoideum und den Processus deltoideus des Schlüsselbeines. Arch. Anat. Physiol. Wissen. Med. 1871:297-299.
  • Hultkrantz, J. (1899) Über congenitalen Schlüsselbeindefect und damit verbundene Schädelanomalien. Anat. Anz. 15:237-241.
  • Ingham, F.L. (1947) Cranio-cleido-dyostosis. Brit. J. Radiol. 20:323-324.
  • Jackson, W.P.U. (1951) Osteo-dental dysplasia (cleido-cranial dysostosis). Acta Med. Scand. 139:292-307.
  • Klinke, K. and H. Pahlke. (1930) Dysostosis cleidocranialis. Bericht über 2 Fälle. Arch. Kinderheilk. 91:46-54.
  • Liebenam, L. (1938) Zwillingspathologische Untersuchengen aus dem Gebiet der Anomalien der Körperform. Partieller Riesenwuchs. Angeborener Pectoralisdefekt. Dysostosis cleidocranialis. Dysostosis craniofacialis. Zeitschr. f. Menschl. Vererbungs- u. Konstitutionslehre 22:373-417.
  • Magauzzi-Valeri, R. (1914) Sur un cas d'articulation costo-claviculaire. Arch. Ital. Biol. 62:283.
  • Pahl, R. (1955) Doppelter Nervenkanal der Klavikula als diagnostische Fehlerquelle. (Zugleich ein Beitrag über das Foramen nervi supraclavicularis.) Fortschr. Röntgenstrahlen 82:487-491.
  • Pendergrass, E.P. and P.J. Hodes. (1937) The rhomboid fossa of the clavicle. Am. J. Roentgenol. 38:152-155.
  • Reid, R.W. (1932) Cranio-cleido dysostosis and normal skull formation. J. Anat. 66:64-65.
  • Reinhardt, K. (1970) Eine doppelseitige Anomalie am lateralen Klavikuladrittel, bestehend aus einer bogenförmigen Duplikatur des Knochens in Richtung auf das Coracoid und aus akzessorischen Knochenelementen. Fortschritte Röntgenstrahlen 113:527-530.
  • Rutherford, H. (1921) Bifurcate clavicle. J. Anat. 55:286-287.
  • Santos, E. (1927) Le canalicule. Coimbra Folia Anat. Univ. Conimbr. 2: N. 13.
  • Schlyvitch, B. (1937-38) Über den Articulus coracoclavicularis. Anat. Anz. 85:89-93.
  • Skarby, H.G. (1936) Das Foramen nervi clavicularis im Rontgenbild. Acta Radiol. 17:397-402.
  • Terry, R.J. (1889) Rudimentary clavicles and other abnormalites of the skeleton of a white women. J. Anat. Physiol. 33:412-422.
  • Terry, R.J. (1932) The clavicle of the American Negro. Am. J. Phys. Anthropol. 16:351-379.
  • Waern, A. (1933-34) Kongenitale Schlüsselbeinperforation. Anat. Anz. 77:221-229.

Anatomical classification

Systems:
Skeletal system

Content provenance

Translation

Italian translation of «Clavicle — Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System» by Ronald A. Bergman, Adel K. Afifi, Ryosuke Miyauchi. Source: https://www.anatomyatlases.org/AnatomicVariants/SkeletalSystem/Text/Clavical.shtml Original work distributed under the CC BY-NC-SA 4.0 licence (https://creativecommons.org/licenses/by-nc-sa/4.0/deed.it). Translation by Redazione AIVA. Changes from the original: Traduzione italiana del testo originale inglese, che resta consultabile nella versione inglese di questa pagina. Il contenuto è stato riorganizzato nel formato scheda del portale (sintesi, testo, riferimenti) senza modificarne le affermazioni. Le figure non sono state copiate: sono collegate alla pagina d’origine. This publication is not approved or endorsed by the authors of the original work.

Licence

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