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Innervation of the acromioclavicular joint by the suprascapular nerve.
Shoulder Elbow. 2020 Jun; 12(3):178-183.SE

Abstract

Background

The suprascapular nerve is largely responsible for the majority of the sensory innervation of the acromioclavicular joint. In this anatomical study, we describe, in detail, the anatomy of the sensory innervation of the acromioclavicular joint by the branches of the suprascapular nerve.

Methods

Twenty-seven shoulders from 17 cadaveric specimens were carefully dissected to identify the course of the suprascapular nerve, with the main focus being on the sensory innervation of the acromioclavicular joint. Nine specific measurements of the acromioclavicular joint sensory nerves were made of each shoulder in relation to distinct anatomical landmarks to determine the mean location and course of these nerves.

Results

In all 27 shoulders (100%), a sensory branch to the acromioclavicular joint with a proximal origin from the suprascapular nerve could be depicted ("first sensory branch"). The mean length of this branch was 4.3 cm (range: 3.3-5.3 cm). In 14 shoulders (52%), a further sensory branch of the suprascapular nerve innervating the posterior acromioclavicular joint capsule could be identified ("second sensory branch").

Discussion

A detailed anatomical description of the sensory innervation of the acromioclavicular joint from suprascapular nerve branches was performed, which can potentially aid in the development of more focused anesthetic blockades and acromioclavicular joint denervation procedures.

Authors+Show Affiliations

Center for Orthopedic Surgery, State Hospitals Aarau and Baden, Baden, Switzerland. Institute of Macroscopical and Clinical Anatomy, Medical University of Graz, Graz, Austria Current affiliation: Department of Orthopaedics, Cantonal Hospital Baden, Baden, Switzerland.Center for Orthopedic Surgery, State Hospitals Aarau and Baden, Baden, Switzerland. Institute of Macroscopical and Clinical Anatomy, Medical University of Graz, Graz, Austria Current affiliation: Department of Orthopaedics, Cantonal Hospital Baden, Baden, Switzerland.Melbourne Orthopaedic Group and Department of Surgery, Monash University, Melbourne, Australia.Institute of Macroscopical and Clinical Anatomy, Medical University of Graz, Graz, Austria Current affiliation: Department of Orthopaedics, Cantonal Hospital Baden, Baden, Switzerland.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32565919

Citation

Borbas, Paul, et al. "Innervation of the Acromioclavicular Joint By the Suprascapular Nerve." Shoulder & Elbow, vol. 12, no. 3, 2020, pp. 178-183.
Borbas P, Eid K, Ek ET, et al. Innervation of the acromioclavicular joint by the suprascapular nerve. Shoulder Elbow. 2020;12(3):178-183.
Borbas, P., Eid, K., Ek, E. T., & Feigl, G. (2020). Innervation of the acromioclavicular joint by the suprascapular nerve. Shoulder & Elbow, 12(3), 178-183. https://doi.org/10.1177/1758573219851005
Borbas P, et al. Innervation of the Acromioclavicular Joint By the Suprascapular Nerve. Shoulder Elbow. 2020;12(3):178-183. PubMed PMID: 32565919.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Innervation of the acromioclavicular joint by the suprascapular nerve. AU - Borbas,Paul, AU - Eid,Karim, AU - Ek,Eugene T, AU - Feigl,Georg, Y1 - 2019/05/20/ PY - 2018/09/13/received PY - 2019/01/29/revised PY - 2019/04/24/accepted PY - 2021/06/01/pmc-release PY - 2020/6/23/entrez PY - 2020/6/23/pubmed PY - 2020/6/23/medline KW - acromioclavicular joint KW - anatomy KW - joint innervation KW - shoulder surgery KW - suprascapular nerve SP - 178 EP - 183 JF - Shoulder & elbow JO - Shoulder Elbow VL - 12 IS - 3 N2 - Background: The suprascapular nerve is largely responsible for the majority of the sensory innervation of the acromioclavicular joint. In this anatomical study, we describe, in detail, the anatomy of the sensory innervation of the acromioclavicular joint by the branches of the suprascapular nerve. Methods: Twenty-seven shoulders from 17 cadaveric specimens were carefully dissected to identify the course of the suprascapular nerve, with the main focus being on the sensory innervation of the acromioclavicular joint. Nine specific measurements of the acromioclavicular joint sensory nerves were made of each shoulder in relation to distinct anatomical landmarks to determine the mean location and course of these nerves. Results: In all 27 shoulders (100%), a sensory branch to the acromioclavicular joint with a proximal origin from the suprascapular nerve could be depicted ("first sensory branch"). The mean length of this branch was 4.3 cm (range: 3.3-5.3 cm). In 14 shoulders (52%), a further sensory branch of the suprascapular nerve innervating the posterior acromioclavicular joint capsule could be identified ("second sensory branch"). Discussion: A detailed anatomical description of the sensory innervation of the acromioclavicular joint from suprascapular nerve branches was performed, which can potentially aid in the development of more focused anesthetic blockades and acromioclavicular joint denervation procedures. SN - 1758-5732 UR - https://www.unboundmedicine.com/medline/citation/32565919/Innervation_of_the_acromioclavicular_joint_by_the_suprascapular_nerve L2 - http://journals.sagepub.com/doi/full/10.1177/1758573219851005?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -
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